Merge pull request #52 from versada/12.0-mig-base-tier-validation

[12.0] base_tier_validation: port to v12
5 years ago · 6541ff23f5
20 changed files with 1471 additions and 0 deletions
--- a/base_tier_validation/README.rst
+++ b/base_tier_validation/README.rst
@ -0,0 +1,103 @@
+====================
+Base Tier Validation
+====================
+
+.. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Mature-brightgreen.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Mature
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fserver--ux-lightgray.png?logo=github
+    :target: https://github.com/OCA/server-ux/tree/11.0/base_tier_validation
+    :alt: OCA/server-ux
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/server-ux-11-0/server-ux-11-0-base_tier_validation
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runbot-Try%20me-875A7B.png
+    :target: https://runbot.odoo-community.org/runbot/250/11.0
+    :alt: Try me on Runbot
+
+|badge1| |badge2| |badge3| |badge4| |badge5| 
+
+This module does not provide a functionality by itself but an abstract model
+to implement a validation process based on tiers on other models (e.g.
+purchase orders, sales orders...).
+
+**Note:** To be able to use this module in a new model you will need some
+development.
+
+See `purchase_tier_validation <https://github
+.com/OCA/purchase-workflow>`_ as an example of implementation.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Configuration
+=============
+
+To configure this module, you need to:
+
+#. Go to *Settings > Technical > Tier Validations > Tier Definition*.
+#. Create as many tiers as you want for any model having tier validation
+   functionality.
+
+Known issues / Roadmap
+======================
+
+* In odoo v11 it would be interesting to try to take advantage of ``mail.activity.mixin``.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/server-ux/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/server-ux/issues/new?body=module:%20base_tier_validation%0Aversion:%2011.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* Eficent
+
+Contributors
+~~~~~~~~~~~~
+
+* Lois Rilo <lois.rilo@eficent.com>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+.. |maintainer-lreficent| image:: https://github.com/lreficent.png?size=40px
+    :target: https://github.com/lreficent
+    :alt: lreficent
+
+Current `maintainer <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-lreficent| 
+
+This module is part of the `OCA/server-ux <https://github.com/OCA/server-ux/tree/11.0/base_tier_validation>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.
--- a/base_tier_validation/init.py
+++ b/base_tier_validation/init.py
@ -0,0 +1,3 @@
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import models
--- a/base_tier_validation/manifest.py
+++ b/base_tier_validation/manifest.py
@ -0,0 +1,23 @@
+# Copyright 2017 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+{
+    "name": "Base Tier Validation",
+    "summary": "Implement a validation process based on tiers.",
+    "version": "12.0.1.0.0",
+    "development_status": "Mature",
+    "maintainers": ['lreficent'],
+    "category": "Tools",
+    "website": "https://github.com/OCA/server-ux",
+    "author": "Eficent, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "application": False,
+    "installable": True,
+    "depends": [
+        "base",
+    ],
+    "data": [
+        "security/ir.model.access.csv",
+        "views/tier_definition_view.xml",
+        "views/tier_review_view.xml",
+    ],
+}
--- a/base_tier_validation/i18n/base_tier_validation.pot
+++ b/base_tier_validation/i18n/base_tier_validation.pot
@ -0,0 +1,270 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* base_tier_validation
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 11.0\n"
+"Report-Msgid-Bugs-To: \n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: base_tier_validation
+#: code:addons/base_tier_validation/models/tier_validation.py:132
+#, python-format
+msgid "A validation process is still open for at least one record."
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_active
+msgid "Active"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.ui.view,arch_db:base_tier_validation.tier_definition_view_search
+msgid "All"
+msgstr ""
+
+#. module: base_tier_validation
+#: selection:tier.definition,review_type:0
+msgid "Any user in a specific group."
+msgstr ""
+
+#. module: base_tier_validation
+#: selection:tier.review,status:0
+msgid "Approved"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_can_review
+msgid "Can Review"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_company_id
+msgid "Company"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_create_uid
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_create_uid
+msgid "Created by"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_create_date
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_create_date
+msgid "Created on"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_definition_id
+msgid "Definition"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_display_name
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_display_name
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_display_name
+msgid "Display Name"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_done_by
+msgid "Done By"
+msgstr ""
+
+#. module: base_tier_validation
+#: code:addons/base_tier_validation/models/tier_validation.py:99
+#, python-format
+msgid "Error evaluating tier validation conditions.\n"
+" %s"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.ui.view,arch_db:base_tier_validation.tier_definition_view_search
+msgid "Group By"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_id
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_id
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_id
+msgid "ID"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition___last_update
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review___last_update
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation___last_update
+msgid "Last Modified on"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_write_uid
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_write_uid
+msgid "Last Updated by"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_write_date
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_write_date
+msgid "Last Updated on"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_model
+#: model:ir.ui.view,arch_db:base_tier_validation.tier_definition_view_search
+msgid "Model"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_need_validation
+msgid "Need Validation"
+msgstr ""
+
+#. module: base_tier_validation
+#: selection:tier.review,status:0
+msgid "Pending"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_model_id
+msgid "Referenced Model"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_rejected
+#: selection:tier.review,status:0
+msgid "Rejected"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_res_id
+msgid "Related Document ID"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_model
+msgid "Related Document Model"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_requested_by
+msgid "Requested By"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_reviewer_id
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_reviewer_id
+msgid "Reviewer"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_reviewer_group_id
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_reviewer_group_id
+msgid "Reviewer group"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_reviewer_ids
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_reviewer_ids
+msgid "Reviewers"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_sequence
+msgid "Sequence"
+msgstr ""
+
+#. module: base_tier_validation
+#: selection:tier.definition,review_type:0
+msgid "Specific user"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_status
+msgid "Status"
+msgstr ""
+
+#. module: base_tier_validation
+#: code:addons/base_tier_validation/models/tier_validation.py:139
+#, python-format
+msgid "The operation is under validation."
+msgstr ""
+
+#. module: base_tier_validation
+#: code:addons/base_tier_validation/models/tier_validation.py:128
+#, python-format
+msgid "This action needs to be validated for at least one record. \n"
+"Please request a validation."
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_sequence
+msgid "Tier"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.actions.act_window,name:base_tier_validation.tier_definition_action
+#: model:ir.ui.menu,name:base_tier_validation.menu_tier_definition
+#: model:ir.ui.view,arch_db:base_tier_validation.tier_definition_view_form
+#: model:ir.ui.view,arch_db:base_tier_validation.tier_definition_view_tree
+msgid "Tier Definition"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_python_code
+msgid "Tier Definition Expression"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.ui.view,arch_db:base_tier_validation.tier_review_view_tree
+msgid "Tier Review"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.ui.menu,name:base_tier_validation.menu_tier_confirmation
+msgid "Tier Validations"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_validated
+msgid "Validated"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_definition_review_type
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_review_review_type
+msgid "Validated by"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,field_description:base_tier_validation.field_tier_validation_review_ids
+msgid "Validations"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model.fields,help:base_tier_validation.field_tier_definition_python_code
+msgid "Write Python code that defines when this tier confirmation will be needed. The result of executing the expresion must be a boolean."
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model,name:base_tier_validation.model_tier_definition
+msgid "tier.definition"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model,name:base_tier_validation.model_tier_review
+msgid "tier.review"
+msgstr ""
+
+#. module: base_tier_validation
+#: model:ir.model,name:base_tier_validation.model_tier_validation
+msgid "tier.validation"
+msgstr ""
+
--- a/base_tier_validation/models/init.py
+++ b/base_tier_validation/models/init.py
@ -0,0 +1,5 @@
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import tier_definition
+from . import tier_review
+from . import tier_validation
--- a/base_tier_validation/models/tier_definition.py
+++ b/base_tier_validation/models/tier_definition.py
@ -0,0 +1,54 @@
+# Copyright 2017 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class TierDefinition(models.Model):
+    _name = "tier.definition"
+    _description = "Tier Definition"
+    _rec_name = "model_id"
+
+    @api.model
+    def _get_tier_validation_model_names(self):
+        res = []
+        return res
+
+    model_id = fields.Many2one(
+        comodel_name="ir.model",
+        string="Referenced Model",
+    )
+    model = fields.Char(
+        related='model_id.model', index=True, store=True,
+    )
+    review_type = fields.Selection(
+        string="Validated by", default="individual",
+        selection=[("individual", "Specific user"),
+                   ("group", "Any user in a specific group.")]
+    )
+    reviewer_id = fields.Many2one(
+        comodel_name="res.users", string="Reviewer",
+    )
+    reviewer_group_id = fields.Many2one(
+        comodel_name="res.groups", string="Reviewer group",
+    )
+    python_code = fields.Text(
+        string='Tier Definition Expression',
+        help="Write Python code that defines when this tier confirmation "
+             "will be needed. The result of executing the expresion must be "
+             "a boolean.",
+        default="""# Available locals:\n#  - rec: current record""",
+    )
+    active = fields.Boolean(default=True)
+    sequence = fields.Integer(default=30)
+    company_id = fields.Many2one(
+        comodel_name="res.company", string="Company",
+        default=lambda self: self.env["res.company"]._company_default_get(
+            "tier.definition"),
+    )
+
+    @api.onchange('model_id')
+    def onchange_model_id(self):
+        return {'domain': {
+            'model_id': [
+                ('model', 'in', self._get_tier_validation_model_names())]}}
--- a/base_tier_validation/models/tier_review.py
+++ b/base_tier_validation/models/tier_review.py
@ -0,0 +1,47 @@
+# Copyright 2017 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class TierReview(models.Model):
+    _name = "tier.review"
+    _description = "Tier Review"
+
+    status = fields.Selection(
+        selection=[("pending", "Pending"),
+                   ("rejected", "Rejected"),
+                   ("approved", "Approved")],
+        default="pending",
+    )
+    model = fields.Char(string='Related Document Model', index=True)
+    res_id = fields.Integer(string='Related Document ID', index=True)
+    definition_id = fields.Many2one(
+        comodel_name="tier.definition",
+    )
+    review_type = fields.Selection(
+        related="definition_id.review_type", readonly=True,
+    )
+    reviewer_id = fields.Many2one(
+        related="definition_id.reviewer_id", readonly=True,
+    )
+    reviewer_group_id = fields.Many2one(
+        related="definition_id.reviewer_group_id", readonly=True,
+    )
+    reviewer_ids = fields.Many2many(
+        string="Reviewers", comodel_name="res.users",
+        compute="_compute_reviewer_ids", store=True,
+    )
+    sequence = fields.Integer(string="Tier")
+    done_by = fields.Many2one(
+        comodel_name="res.users",
+    )
+    requested_by = fields.Many2one(
+        comodel_name="res.users",
+    )
+
+    @api.multi
+    @api.depends('reviewer_id', 'reviewer_group_id', 'reviewer_group_id.users')
+    def _compute_reviewer_ids(self):
+        for rec in self:
+            rec.reviewer_ids = rec.reviewer_id + rec.reviewer_group_id.users
--- a/base_tier_validation/models/tier_validation.py
+++ b/base_tier_validation/models/tier_validation.py
@ -0,0 +1,201 @@
+# Copyright 2017 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models, _
+from odoo.exceptions import ValidationError, UserError
+from odoo.tools.safe_eval import safe_eval
+
+
+class TierValidation(models.AbstractModel):
+    _name = "tier.validation"
+    _description = "Tier Validation (abstract)"
+
+    _state_field = 'state'
+    _state_from = ['draft']
+    _state_to = ['confirmed']
+    _cancel_state = 'cancel'
+
+    # TODO: step by step validation?
+
+    review_ids = fields.One2many(
+        comodel_name='tier.review', inverse_name='res_id',
+        string='Validations',
+        domain=lambda self: [('model', '=', self._name)],
+        auto_join=True,
+    )
+    validated = fields.Boolean(
+        compute="_compute_validated_rejected",
+        search="_search_validated",
+    )
+    need_validation = fields.Boolean(compute="_compute_need_validation")
+    rejected = fields.Boolean(compute="_compute_validated_rejected")
+    reviewer_ids = fields.Many2many(
+        string="Reviewers", comodel_name="res.users",
+        compute="_compute_reviewer_ids",
+        search="_search_reviewer_ids",
+    )
+    can_review = fields.Boolean(compute="_compute_can_review")
+
+    @api.multi
+    def _compute_can_review(self):
+        for rec in self:
+            rec.can_review = self.env.user in rec.reviewer_ids
+
+    @api.multi
+    @api.depends('review_ids')
+    def _compute_reviewer_ids(self):
+        for rec in self:
+            rec.reviewer_ids = rec.review_ids.filtered(
+                lambda r: r.status == 'pending').mapped('reviewer_ids')
+
+    @api.model
+    def _search_validated(self, operator, value):
+        assert operator in ('=', '!='), 'Invalid domain operator'
+        assert value in (True, False), 'Invalid domain value'
+        pos = self.search([
+            (self._state_field, 'in', self._state_from)]).filtered(
+            lambda r: r.review_ids and r.validated == value)
+        return [('id', 'in', pos.ids)]
+
+    @api.model
+    def _search_reviewer_ids(self, operator, value):
+        reviews = self.env['tier.review'].search([
+            ('model', '=', self._name),
+            ('reviewer_ids', operator, value),
+            ('status', '=', 'pending')])
+        return [('id', 'in', list(set(reviews.mapped('res_id'))))]
+
+    @api.multi
+    def _compute_validated_rejected(self):
+        for rec in self:
+            rec.validated = self._calc_reviews_validated(rec.review_ids)
+            rec.rejected = self._calc_reviews_rejected(rec.review_ids)
+
+    @api.model
+    def _calc_reviews_validated(self, reviews):
+        """Override for different validation policy."""
+        if not reviews:
+            return False
+        return not any([s != 'approved' for s in reviews.mapped('status')])
+
+    @api.model
+    def _calc_reviews_rejected(self, reviews):
+        """Override for different rejection policy."""
+        return any([s == 'rejected' for s in reviews.mapped('status')])
+
+    @api.multi
+    def _compute_need_validation(self):
+        for rec in self:
+            tiers = self.env[
+                'tier.definition'].search([('model', '=', self._name)])
+            valid_tiers = any([self.evaluate_tier(tier) for tier in tiers])
+            rec.need_validation = not rec.review_ids and valid_tiers and \
+                getattr(rec, self._state_field) in self._state_from
+
+    @api.multi
+    def evaluate_tier(self, tier):
+        try:
+            res = safe_eval(tier.python_code, globals_dict={'rec': self})
+        except Exception as error:
+            raise UserError(_(
+                "Error evaluating tier validation conditions.\n %s") % error)
+        return res
+
+    @api.model
+    def _get_under_validation_exceptions(self):
+        """Extend for more field exceptions."""
+        return ['message_follower_ids']
+
+    @api.multi
+    def _check_allow_write_under_validation(self, vals):
+        """Allow to add exceptions for fields that are allowed to be written
+        even when the record is under validation."""
+        exceptions = self._get_under_validation_exceptions()
+        for val in vals:
+            if val not in exceptions:
+                return False
+        return True
+
+    @api.multi
+    def write(self, vals):
+        for rec in self:
+            if (getattr(rec, self._state_field) in self._state_from and
+                    vals.get(self._state_field) in self._state_to):
+                if rec.need_validation:
+                    # try to validate operation
+                    reviews = rec.request_validation()
+                    rec._validate_tier(reviews)
+                    if not self._calc_reviews_validated(reviews):
+                        raise ValidationError(_(
+                            "This action needs to be validated for at least "
+                            "one record. \nPlease request a validation."))
+                if rec.review_ids and not rec.validated:
+                    raise ValidationError(_(
+                        "A validation process is still open for at least "
+                        "one record."))
+            if (rec.review_ids and getattr(rec, self._state_field) in
+                    self._state_from and not vals.get(self._state_field) in
+                    (self._state_to + [self._cancel_state]) and not
+                    self._check_allow_write_under_validation(vals)):
+                raise ValidationError(_("The operation is under validation."))
+        if vals.get(self._state_field) in self._state_from:
+            self.mapped('review_ids').unlink()
+        return super(TierValidation, self).write(vals)
+
+    def _validate_tier(self, tiers=False):
+        self.ensure_one()
+        tier_reviews = tiers or self.review_ids
+        user_reviews = tier_reviews.filtered(
+            lambda r: r.status in ('pending', 'rejected') and
+            (r.reviewer_id == self.env.user or
+             r.reviewer_group_id in self.env.user.groups_id))
+        user_reviews.write({
+            'status': 'approved',
+            'done_by': self.env.user.id,
+        })
+
+    @api.multi
+    def validate_tier(self):
+        for rec in self:
+            rec._validate_tier()
+
+    @api.multi
+    def reject_tier(self):
+        for rec in self:
+            user_reviews = rec.review_ids.filtered(
+                lambda r: r.status in ('pending', 'approved') and
+                (r.reviewer_id == self.env.user or
+                 r.reviewer_group_id in self.env.user.groups_id))
+            user_reviews.write({
+                'status': 'rejected',
+                'done_by': self.env.user.id,
+            })
+
+    @api.multi
+    def request_validation(self):
+        td_obj = self.env['tier.definition']
+        tr_obj = created_trs = self.env['tier.review']
+        for rec in self:
+            if getattr(rec, self._state_field) in self._state_from:
+                if rec.need_validation:
+                    tier_definitions = td_obj.search([
+                        ('model', '=', self._name)], order="sequence desc")
+                    sequence = 0
+                    for td in tier_definitions:
+                        if self.evaluate_tier(td):
+                            sequence += 1
+                            created_trs += tr_obj.create({
+                                'model': self._name,
+                                'res_id': rec.id,
+                                'definition_id': td.id,
+                                'sequence': sequence,
+                                'requested_by': self.env.uid,
+                            })
+                    # TODO: notify? post some msg in chatter?
+        return created_trs
+
+    @api.multi
+    def restart_validation(self):
+        for rec in self:
+            if getattr(rec, self._state_field) in self._state_from:
+                rec.mapped('review_ids').unlink()
--- a/base_tier_validation/readme/CONFIGURE.rst
+++ b/base_tier_validation/readme/CONFIGURE.rst
@ -0,0 +1,5 @@
+To configure this module, you need to:
+
+#. Go to *Settings > Technical > Tier Validations > Tier Definition*.
+#. Create as many tiers as you want for any model having tier validation
+   functionality.
--- a/base_tier_validation/readme/CONTRIBUTORS.rst
+++ b/base_tier_validation/readme/CONTRIBUTORS.rst
@ -0,0 +1,2 @@
+* Lois Rilo <lois.rilo@eficent.com>
+* Naglis Jonaitis <naglis@versada.eu>
--- a/base_tier_validation/readme/DESCRIPTION.rst
+++ b/base_tier_validation/readme/DESCRIPTION.rst
@ -0,0 +1,9 @@
+This module does not provide a functionality by itself but an abstract model
+to implement a validation process based on tiers on other models (e.g.
+purchase orders, sales orders...).
+
+**Note:** To be able to use this module in a new model you will need some
+development.
+
+See `purchase_tier_validation <https://github
+.com/OCA/purchase-workflow>`_ as an example of implementation.
--- a/base_tier_validation/readme/ROADMAP.rst
+++ b/base_tier_validation/readme/ROADMAP.rst
@ -0,0 +1 @@
+* Starting with Odoo v11 it would be interesting to try to take advantage of ``mail.activity.mixin``.
--- a/base_tier_validation/security/ir.model.access.csv
+++ b/base_tier_validation/security/ir.model.access.csv
@ -0,0 +1,4 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_tier_review,access.tier.review,model_tier_review,,1,1,1,1
+access_tier_definition_all,tier.definition.all,model_tier_definition,,1,0,0,0
+access_tier_definition_settings,tier.definition.settings,model_tier_definition,base.group_system,1,1,1,1
--- a/base_tier_validation/static/description/index.html
+++ b/base_tier_validation/static/description/index.html
@ -0,0 +1,443 @@
+<?xml version="1.0" encoding="utf-8" ?>
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+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+<meta name="generator" content="Docutils 0.14: http://docutils.sourceforge.net/" />
+<title>Base Tier Validation</title>
+<style type="text/css">
+
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+<body>
+<div class="document" id="base-tier-validation">
+<h1 class="title">Base Tier Validation</h1>
+
+<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!! This file is generated by oca-gen-addon-readme !!
+!! changes will be overwritten.                   !!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
+<p><a class="reference external" href="https://odoo-community.org/page/development-status"><img alt="Mature" src="https://img.shields.io/badge/maturity-Mature-brightgreen.png" /></a> <a class="reference external" href="http://www.gnu.org/licenses/agpl-3.0-standalone.html"><img alt="License: AGPL-3" src="https://img.shields.io/badge/licence-AGPL--3-blue.png" /></a> <a class="reference external" href="https://github.com/OCA/server-ux/tree/11.0/base_tier_validation"><img alt="OCA/server-ux" src="https://img.shields.io/badge/github-OCA%2Fserver--ux-lightgray.png?logo=github" /></a> <a class="reference external" href="https://translation.odoo-community.org/projects/server-ux-11-0/server-ux-11-0-base_tier_validation"><img alt="Translate me on Weblate" src="https://img.shields.io/badge/weblate-Translate%20me-F47D42.png" /></a> <a class="reference external" href="https://runbot.odoo-community.org/runbot/250/11.0"><img alt="Try me on Runbot" src="https://img.shields.io/badge/runbot-Try%20me-875A7B.png" /></a></p>
+<p>This module does not provide a functionality by itself but an abstract model
+to implement a validation process based on tiers on other models (e.g.
+purchase orders, sales orders…).</p>
+<p><strong>Note:</strong> To be able to use this module in a new model you will need some
+development.</p>
+<p>See <a class="reference external" href="https://github.com/OCA/purchase-workflow">purchase_tier_validation</a> as an example of implementation.</p>
+<p><strong>Table of contents</strong></p>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#configuration" id="id1">Configuration</a></li>
+<li><a class="reference internal" href="#known-issues-roadmap" id="id2">Known issues / Roadmap</a></li>
+<li><a class="reference internal" href="#bug-tracker" id="id3">Bug Tracker</a></li>
+<li><a class="reference internal" href="#credits" id="id4">Credits</a><ul>
+<li><a class="reference internal" href="#authors" id="id5">Authors</a></li>
+<li><a class="reference internal" href="#contributors" id="id6">Contributors</a></li>
+<li><a class="reference internal" href="#maintainers" id="id7">Maintainers</a></li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="section" id="configuration">
+<h1><a class="toc-backref" href="#id1">Configuration</a></h1>
+<p>To configure this module, you need to:</p>
+<ol class="arabic simple">
+<li>Go to <em>Settings &gt; Technical &gt; Tier Validations &gt; Tier Definition</em>.</li>
+<li>Create as many tiers as you want for any model having tier validation
+functionality.</li>
+</ol>
+</div>
+<div class="section" id="known-issues-roadmap">
+<h1><a class="toc-backref" href="#id2">Known issues / Roadmap</a></h1>
+<ul class="simple">
+<li>In odoo v11 it would be interesting to try to take advantage of <tt class="docutils literal">mail.activity.mixin</tt>.</li>
+</ul>
+</div>
+<div class="section" id="bug-tracker">
+<h1><a class="toc-backref" href="#id3">Bug Tracker</a></h1>
+<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/server-ux/issues">GitHub Issues</a>.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+<a class="reference external" href="https://github.com/OCA/server-ux/issues/new?body=module:%20base_tier_validation%0Aversion:%2011.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**">feedback</a>.</p>
+<p>Do not contact contributors directly about support or help with technical issues.</p>
+</div>
+<div class="section" id="credits">
+<h1><a class="toc-backref" href="#id4">Credits</a></h1>
+<div class="section" id="authors">
+<h2><a class="toc-backref" href="#id5">Authors</a></h2>
+<ul class="simple">
+<li>Eficent</li>
+</ul>
+</div>
+<div class="section" id="contributors">
+<h2><a class="toc-backref" href="#id6">Contributors</a></h2>
+<ul class="simple">
+<li>Lois Rilo &lt;<a class="reference external" href="mailto:lois.rilo&#64;eficent.com">lois.rilo&#64;eficent.com</a>&gt;</li>
+</ul>
+</div>
+<div class="section" id="maintainers">
+<h2><a class="toc-backref" href="#id7">Maintainers</a></h2>
+<p>This module is maintained by the OCA.</p>
+<a class="reference external image-reference" href="https://odoo-community.org"><img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" /></a>
+<p>OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.</p>
+<p>Current <a class="reference external" href="https://odoo-community.org/page/maintainer-role">maintainer</a>:</p>
+<p><a class="reference external" href="https://github.com/lreficent"><img alt="lreficent" src="https://github.com/lreficent.png?size=40px" /></a></p>
+<p>This module is part of the <a class="reference external" href="https://github.com/OCA/server-ux/tree/11.0/base_tier_validation">OCA/server-ux</a> project on GitHub.</p>
+<p>You are welcome to contribute. To learn how please visit <a class="reference external" href="https://odoo-community.org/page/Contribute">https://odoo-community.org/page/Contribute</a>.</p>
+</div>
+</div>
+</div>
+</body>
+</html>
--- a/base_tier_validation/tests/init.py
+++ b/base_tier_validation/tests/init.py
@ -0,0 +1,4 @@
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import common
+from . import test_tier_validation
--- a/base_tier_validation/tests/common.py
+++ b/base_tier_validation/tests/common.py
@ -0,0 +1,13 @@
+# Copyright 2018 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+
+def setup_test_model(env, model_clses):
+    for model_cls in model_clses:
+        model_cls._build_model(env.registry, env.cr)
+
+    env.registry.setup_models(env.cr)
+    env.registry.init_models(
+        env.cr, [model_cls._name for model_cls in model_clses],
+        dict(env.context, update_custom_fields=True)
+    )
--- a/base_tier_validation/tests/test_tier_validation.py
+++ b/base_tier_validation/tests/test_tier_validation.py
@ -0,0 +1,150 @@
+# Copyright 2018 Eficent Business and IT Consulting Services S.L.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
+
+from odoo.tests import common
+from odoo.exceptions import ValidationError, UserError
+from .common import setup_test_model
+from .tier_validation_tester import TierValidationTester
+
+
+@common.at_install(False)
+@common.post_install(True)
+class TierTierValidation(common.SavepointCase):
+
+    @classmethod
+    def setUpClass(cls):
+        super(TierTierValidation, cls).setUpClass()
+
+        setup_test_model(cls.env, [TierValidationTester])
+
+        cls.test_model = cls.env[TierValidationTester._name]
+
+        cls.tester_model = cls.env['ir.model'].search([
+            ('model', '=', 'tier.validation.tester')])
+
+        # Access record:
+        cls.env["ir.model.access"].create({
+            'name': "access.tester",
+            'model_id': cls.tester_model.id,
+            'perm_read': 1,
+            'perm_write': 1,
+            'perm_create': 1,
+            'perm_unlink': 1,
+        })
+
+        # Create users:
+        group_ids = cls.env.ref('base.group_system').ids
+        cls.test_user_1 = cls.env['res.users'].create({
+            'name': 'John',
+            'login': 'test1',
+            'groups_id': [(6, 0, group_ids)],
+        })
+        cls.test_user_2 = cls.env['res.users'].create({
+            'name': 'Mike',
+            'login': 'test2',
+        })
+
+        # Create tier definition:
+        cls.tier_def_obj = cls.env['tier.definition']
+        cls.tier_def_obj.create({
+            'model_id': cls.tester_model.id,
+            'review_type': 'individual',
+            'reviewer_id': cls.test_user_1.id,
+            'python_code': 'rec.test_field > 1.0',
+        })
+
+        cls.test_record = cls.test_model.create({
+            'test_field': 2.5,
+        })
+
+    def test_01_auto_validation(self):
+        """When the user can validate all future reviews, it is not needed
+        to request a validation, the action can be done straight forward."""
+        self.test_record.sudo(self.test_user_1.id).action_confirm()
+        self.assertEqual(self.test_record.state, 'confirmed')
+
+    def test_02_no_auto_validation(self):
+        """User with no right to validate future reviews must request a
+        validation."""
+        with self.assertRaises(ValidationError):
+            self.test_record.sudo(self.test_user_2.id).action_confirm()
+
+    def test_03_request_validation_approved(self):
+        """User 2 request a validation and user 1 approves it."""
+        self.assertFalse(self.test_record.review_ids)
+        reviews = self.test_record.sudo(
+            self.test_user_2.id).request_validation()
+        self.assertTrue(reviews)
+        record = self.test_record.sudo(self.test_user_1.id)
+        record.validate_tier()
+        self.assertTrue(record.validated)
+
+    def test_04_request_validation_rejected(self):
+        """Request validation, rejection and reset."""
+        self.assertFalse(self.test_record.review_ids)
+        reviews = self.test_record.sudo(
+            self.test_user_2.id).request_validation()
+        self.assertTrue(reviews)
+        record = self.test_record.sudo(self.test_user_1.id)
+        record.reject_tier()
+        self.assertTrue(record.review_ids)
+        self.assertTrue(record.rejected)
+        record.restart_validation()
+        self.assertFalse(record.review_ids)
+
+    def test_05_under_validation(self):
+        """Write is forbidden in a record under validation."""
+        self.assertFalse(self.test_record.review_ids)
+        reviews = self.test_record.sudo(
+            self.test_user_2.id).request_validation()
+        self.assertTrue(reviews)
+        record = self.test_record.sudo(self.test_user_1.id)
+        with self.assertRaises(ValidationError):
+            record.write({'test_field': 0.5})
+
+    def test_06_validation_process_open(self):
+        """Operation forbidden while a validation process is open."""
+        self.assertFalse(self.test_record.review_ids)
+        reviews = self.test_record.sudo(
+            self.test_user_2.id).request_validation()
+        self.assertTrue(reviews)
+        record = self.test_record.sudo(self.test_user_1.id)
+        with self.assertRaises(ValidationError):
+            record.action_confirm()
+
+    def test_07_search_reviewers(self):
+        """Test search methods."""
+        reviews = self.test_record.sudo(
+            self.test_user_2.id).request_validation()
+        self.assertTrue(reviews)
+        record = self.test_record.sudo(self.test_user_1.id)
+        self.assertIn(self.test_user_1, record.reviewer_ids)
+        res = self.test_model.search(
+            [('reviewer_ids', 'in', self.test_user_1.id)])
+        self.assertTrue(res)
+
+    def test_08_search_validated(self):
+        """Test for the validated search method."""
+        self.test_record.sudo(self.test_user_2.id).request_validation()
+        res = self.test_model.sudo(self.test_user_1.id).search(
+            [('validated', '=', False)])
+        self.assertTrue(res)
+
+    def test_09_wrong_tier_definition(self):
+        """Error should raise with incorrect python expresions on
+        tier definitions."""
+        self.tier_def_obj.create({
+            'model_id': self.tester_model.id,
+            'review_type': 'individual',
+            'reviewer_id': self.test_user_1.id,
+            'python_code': 'rec.not_existing_field > 1.0',
+        })
+        with self.assertRaises(UserError):
+            self.test_record.sudo(self.test_user_1.id).action_confirm()
+
+    def test_10_dummy_tier_definition(self):
+        """Test tier.definition methods."""
+        res = self.tier_def_obj._get_tier_validation_model_names()
+        self.assertEqual(res, [])
+        res = self.tier_def_obj.onchange_model_id()
+        self.assertTrue(res)
--- a/base_tier_validation/tests/tier_validation_tester.py
+++ b/base_tier_validation/tests/tier_validation_tester.py
@ -0,0 +1,21 @@
+# Copyright 2018 Eficent Business and IT Consulting Services S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class TierValidationTester(models.Model):
+    _name = 'tier.validation.tester'
+    _inherit = ['tier.validation']
+
+    state = fields.Selection(
+        selection=[('draft', 'Draft'),
+                   ('confirmed', 'Confirmed'),
+                   ('cancel', 'Cancel')],
+        default='draft',
+    )
+    test_field = fields.Float()
+
+    @api.multi
+    def action_confirm(self):
+        self.write({'state': 'confirmed'})
--- a/base_tier_validation/views/tier_definition_view.xml
+++ b/base_tier_validation/views/tier_definition_view.xml
@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2017 Eficent Business and IT Consulting Services S.L.
+     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->
+<odoo>
+
+    <record id="tier_definition_view_tree" model="ir.ui.view">
+        <field name="name">tier.definition.tree</field>
+        <field name="model">tier.definition</field>
+        <field name="arch" type="xml">
+            <tree string="Tier Definition">
+                <field name="model_id"/>
+                <field name="review_type"/>
+                <field name="reviewer_id"/>
+                <field name="reviewer_group_id"/>
+                <field name="sequence"/>
+                <field name="company_id" groups="base.group_multi_company"/>
+                <field name="active"/>
+            </tree>
+        </field>
+    </record>
+
+    <record id="tier_definition_view_form" model="ir.ui.view">
+        <field name="name">tier.definition.form</field>
+        <field name="model">tier.definition</field>
+        <field name="arch" type="xml">
+            <form string="Tier Definition">
+                <sheet>
+                    <div class="oe_button_box" name="button_box">
+                        <button name="toggle_active" type="object" class="oe_stat_button" icon="fa-archive">
+                            <field name="active" widget="boolean_button"/>
+                        </button>
+                    </div>
+                    <group>
+                        <group name="left">
+                            <field name="model_id" options="{'no_create': True}"/>
+                            <field name="review_type"/>
+                            <field name="reviewer_id"
+                                   attrs="{'invisible': [('review_type', '!=', 'individual')]}"/>
+                            <field name="reviewer_group_id"
+                                   attrs="{'invisible': [('review_type', '!=', 'group')]}"/>
+                        </group>
+                        <group name="right">
+                            <field name="company_id" groups="base.group_multi_company" options="{'no_create': True}"/>
+                            <field name="sequence"/>
+                        </group>
+                    </group>
+                    <group col="4" name="bottom">
+                        <field name="python_code" colspan="4"/>
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+    <record id="tier_definition_view_search" model="ir.ui.view">
+        <field name="name">tier.definition.search</field>
+        <field name="model">tier.definition</field>
+        <field name="arch" type="xml">
+            <search>
+                <field name="model_id"/>
+                <field name="reviewer_id"/>
+                <field name="reviewer_group_id"/>
+                <field name="active"/>
+                <separator/>
+                <filter string="All" name="all" domain="['|', ('active', '=', False), ('active', '=', True)]" />
+                <group expand="0" string="Group By">
+                    <filter string="Model" name="model_id" domain="[]" context="{'group_by':'model_id'}"/>
+                </group>
+            </search>
+        </field>
+    </record>
+
+    <record id="tier_definition_action" model="ir.actions.act_window">
+        <field name="name">Tier Definition</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">tier.definition</field>
+        <field name="view_type">form</field>
+        <field name="view_mode">tree,form</field>
+        <field name="context">{'search_default_all': 1}</field>
+    </record>
+
+    <menuitem id="menu_tier_confirmation"
+              name="Tier Validations"
+              parent="base.menu_custom"/>
+    <menuitem id="menu_tier_definition"
+              parent="menu_tier_confirmation"
+              action="tier_definition_action"/>
+
+</odoo>
--- a/base_tier_validation/views/tier_review_view.xml
+++ b/base_tier_validation/views/tier_review_view.xml
@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2017 Eficent Business and IT Consulting Services S.L.
+     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->
+<odoo>
+
+    <record id="tier_review_view_tree" model="ir.ui.view">
+        <field name="name">tier.review.tree</field>
+        <field name="model">tier.review</field>
+        <field name="arch" type="xml">
+            <tree string="Tier Review"
+                  decoration-danger="status=='rejected'"
+                  decoration-success="status=='approved'">
+                <field name="sequence"/>
+                <field name="requested_by"/>
+                <field name="review_type"/>
+                <field name="reviewer_id"/>
+                <field name="reviewer_group_id"/>
+                <field name="status"/>
+                <field name="done_by"/>
+            </tree>
+        </field>
+    </record>
+
+</odoo>