server-tools/base_custom_info/views/custom_info_value_view.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2016 Jairo Llopis <jairo.llopis@tecnativa.com>
     Copyright 2017 Pedro M. Baeza <pedro.baeza@tecnativa.com>
     License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl). -->
<odoo>

    <record id="custom_info_value_tree" model="ir.ui.view">
        <field name="model">custom.info.value</field>
        <field name="arch" type="xml">
            <tree string="Custom Property Values" create="0" delete="0">
                <field name="owner_id" invisible="context.get('embed')"/>
                <field name="property_id"/>
                <field name="category_id"/>
                <field name="required" invisible="1"/>
                <field name="value"
                       attrs="{'required': [('required', '=', True)]}"
                />
            </tree>
        </field>
    </record>

    <record id="custom_info_value_tree_editable" model="ir.ui.view">
        <field name="model">custom.info.value</field>
        <field name="priority" eval="999"/>
        <field name="mode">primary</field>
        <field name="inherit_id" ref="custom_info_value_tree"/>
        <field name="arch" type="xml">
            <tree position="attributes">
                <attribute name="editable">bottom</attribute>
            </tree>
            <field name="value" position="after">
                <field name="field_type" invisible="1"/>
                <field name="value_id"
                       widget="selection"
                       attrs="{'invisible': [('field_type', '!=', 'id')], 'required': [('required', '=', True), ('field_type', '=', 'id')]}"
                />
            </field>
        </field>
    </record>

    <record id="custom_info_value_form" model="ir.ui.view">
        <field name="model">custom.info.value</field>
        <field name="arch" type="xml">
            <form>
                <sheet>
                    <group name="metadata">
                        <field name="owner_id" invisible="context.get('embed')"/>
                        <field name="property_id" readonly="context.get('embed')"/>
                        <field name="category_id"/>
                        <field name="field_type" readonly="True"/>
                        <field name="required" readonly="True"/>
                    </group>
                    <group name="value">
                        <field name="value_str"
                               attrs="{'invisible': [('field_type', '!=', 'str')], 'required': [('required', '=', True), ('field_type', '=', 'str')]}"
                        />
                        <field name="value_int"
                               attrs="{'invisible': [('field_type', '!=', 'int')], 'required': [('required', '=', True), ('field_type', '=', 'int')]}"
                        />
                        <field name="value_float"
                               attrs="{'invisible': [('field_type', '!=', 'float')], 'required': [('required', '=', True), ('field_type', '=', 'float')]}"
                        />
                        <field name="value_bool"
                               attrs="{'invisible': [('field_type', '!=', 'bool')], 'required': [('required', '=', True), ('field_type', '=', 'bool')]}"
                        />
                        <field name="value_id"
                               widget="selection"
                               attrs="{'invisible': [('field_type', '!=', 'id')], 'required': [('required', '=', True), ('field_type', '=', 'id')]}"
                        />
                    </group>
                    <div class="alert alert-warning" invisible="not context.get('embed')">
                        <strong>Warning!</strong>
                        You might see no changes in parent form until you save it.
                    </div>
                </sheet>
            </form>
        </field>
    </record>

    <record id="custom_info_value_search" model="ir.ui.view">
        <field name="model">custom.info.value</field>
        <field name="arch" type="xml">
            <search>
                <field name="model"/>
                <field name="res_id"/>
                <field name="category_id"/>
                <field name="property_id"/>
                <field name="value"/>
                <group expand="0" string="Group By">
                    <filter
                        string="Owner"
                        context="{'group_by': ['model' , 'res_id']}"/>
                    <filter
                        string="Category"
                        context="{'group_by': 'category_id'}"/>
                    <filter
                        string="Property"
                        context="{'group_by': 'property_id'}"/>
                </group>
            </search>
        </field>
    </record>

    <record id="custom_info_value_action" model="ir.actions.act_window">
        <field name="name">Values</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">custom.info.value</field>
        <field name="view_mode">tree,form</field>
        <field name="view_type">form</field>
    </record>

</odoo>