Add stat button and filters on partners

So the revisions are easier to reach than from the menus

partner_revision/__openerp__.py

@@ -32,6 +32,7 @@
           'views/menu.xml',
           'views/res_partner_revision_views.xml',
           'views/revision_field_rule_views.xml',
+          'views/res_partner_views.xml',
           ],
  'test': [],
  'installable': True,

partner_revision/models/res_partner.py

@@ -29,6 +29,18 @@ class ResPartner(models.Model):
                                    inverse_name='partner_id',
                                    string='Revisions',
                                    readonly=True)
+    count_pending_revisions = fields.Integer(
+        string='Pending Revisions',
+        compute='_count_pending_revisions',
+        search='_search_count_pending_revisions')
+
+    @api.one
+    @api.depends('revision_ids', 'revision_ids.state')
+    def _count_pending_revisions(self):
+        revisions = self.revision_ids.filtered(
+            lambda rev: rev.state == 'draft' and rev.partner_id == self
+        )
+        self.count_pending_revisions = len(revisions)
 
     @api.multi
     def write(self, values):
@@ -40,3 +52,16 @@ class ResPartner(models.Model):
                 local_values = revision_model.add_revision(record, values)
                 super(ResPartner, record).write(local_values)
         return True
+
+    def _search_count_pending_revisions(self, operator, value):
+        if operator not in ('=', '!=', '<', '<=', '>', '>=', 'in', 'not in'):
+            return []
+        query = ("SELECT p.id "
+                 "FROM res_partner p "
+                 "INNER JOIN res_partner_revision r ON r.partner_id = p.id "
+                 "WHERE r.state = 'draft' "
+                 "GROUP BY p.id "
+                 "HAVING COUNT(r.id) %s %%s ") % operator
+        self.env.cr.execute(query, (value,))
+        ids = [row[0] for row in self.env.cr.fetchall()]
+        return [('id', 'in', ids)]

partner_revision/views/res_partner_revision_views.xml

@@ -123,6 +123,18 @@
       <field name="arch" type="xml">
         <search string="Partner Revision">
           <field name="partner_id"/>
+          <filter string="Pending" name="draft"
+            domain="[('state','=','draft')]"/>
+          <filter string="Done" name="done"
+            domain="[('state','=','done')]"/>
+          <group expand="0" string="Group By">
+            <filter string="Partner"
+              name="groupby_partner_id"
+              context="{'group_by': 'partner_id'}"/>
+            <filter string="State"
+              name="groupby_state"
+              context="{'group_by': 'state'}"/>
+          </group>
         </search>
       </field>
     </record>
@@ -133,6 +145,7 @@
       <field name="res_model">res.partner.revision</field>
       <field name="view_type">form</field>
       <field name="view_mode">tree,form</field>
+      <field name="context">{'search_default_draft': 1}</field>
       <field name="search_view_id" ref="view_res_partner_revision_search"/>
     </record>
 

partner_revision/views/res_partner_views.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+  <data noupdate="0">
+
+    <record id="res_partner_view_buttons" model="ir.ui.view">
+      <field name="name">res.partner.view.buttons</field>
+      <field name="model">res.partner</field>
+      <field name="inherit_id" ref="base.view_partner_form" />
+      <field name="priority" eval="18"/>
+      <field name="groups_id" eval="[(4, ref('partner_revision.group_revision_user'))]"/>
+      <field name="arch" type="xml">
+        <xpath expr="//div[@name='buttons']" position="inside">
+          <button class="oe_inline oe_stat_button"
+            type="action"
+            name="%(partner_revision.action_res_partner_revision_view)d"
+            attrs="{'invisible': [('count_pending_revisions', '=', 0)]}"
+            context="{'search_default_draft': 1, 'search_default_partner_id': active_id}"
+            icon="fa-code-fork">
+            <field string="Pending Revisions"
+              name="count_pending_revisions"
+              widget="statinfo"/>
+          </button>
+        </xpath>
+      </field>
+    </record>
+
+    <record id="view_res_partner_filter" model="ir.ui.view">
+      <field name="name">res.partner.select</field>
+      <field name="model">res.partner</field>
+      <field name="inherit_id" ref="base.view_res_partner_filter" />
+      <field name="arch" type="xml">
+        <filter name="customer" position="after">
+          <separator/>
+          <filter string="Pending Revisions"
+            name="pending_revisions"
+            domain="[('count_pending_revisions', '>', 0)]"/>
+        </filter>
+      </field>
+    </record>
+
+  </data>
+</openerp>