[IMP] <mrp_bom_version> Older versions shown in each BoM

mrp_bom_version/models/mrp_bom.py

@@ -15,15 +15,23 @@ class MrpBom(models.Model):
         },
     }
 
+    @api.one
+    def _get_old_versions(self):
+        parent = self.parent_bom
+        old_version = self.env['mrp.bom']
+        while parent:
+            old_version += parent
+            parent = parent.parent_bom
+        self.old_versions = old_version
+
     active = fields.Boolean(
         string='Active', default=False, readonly=True,
         states={'draft': [('readonly', False)]})
     historical_date = fields.Date(string='Historical Date', readonly=True)
-    state = fields.Selection([('draft', 'Draft'),
-                              ('active', 'Active'),
-                              ('historical', 'Historical'),
-                              ], string='Status', index=True, readonly=True,
-                             default='draft', copy=False)
+    state = fields.Selection(
+        selection=[('draft', 'Draft'), ('active', 'Active'),
+                   ('historical', 'Historical')], string='State',
+        index=True, readonly=True, default='draft', copy=False)
     product_tmpl_id = fields.Many2one(
         readonly=True, states={'draft': [('readonly', False)]})
     product_id = fields.Many2one(
@@ -62,6 +70,11 @@ class MrpBom(models.Model):
         states={'historical': [('readonly', True)]})
     version = fields.Integer(states={'historical': [('readonly', True)]},
                              copy=False, default=1)
+    parent_bom = fields.Many2one(
+        comodel_name='mrp.bom', string='Parent BoM')
+    old_versions = fields.Many2many(
+        comodel_name='mrp.bom', string='Old Versions',
+        compute='_get_old_versions')
 
     @api.multi
     def button_draft(self):
@@ -70,27 +83,39 @@ class MrpBom(models.Model):
     @api.multi
     def button_new_version(self):
         self.ensure_one()
-        self.write({'active': False, 'state': 'historical',
-                    'historical_date': fields.Date.today()})
-        version = self.version + 1
-        new_bom = self.copy({'version': version})
-        new_bom.active = True
-        return {'type': 'ir.actions.act_window',
-                'view_type': 'form, tree',
-                'view_mode': 'form',
-                'res_model': 'mrp.bom',
-                'res_id': new_bom.id,
-                'target': 'new',
-                }
+        new_bom = self.copy({
+            'version': self.version + 1,
+            'active': True,
+            'parent_bom': self.id,
+        })
+        self.write({
+            'active': False,
+            'state': 'historical',
+            'historical_date': fields.Date.today(),
+        })
+        return {
+            'type': 'ir.actions.act_window',
+            'view_type': 'form, tree',
+            'view_mode': 'form',
+            'res_model': 'mrp.bom',
+            'res_id': new_bom.id,
+            'target': 'new',
+        }
 
     @api.one
     def button_activate(self):
-        return self.write({'active': True, 'state': 'active'})
+        self.write({
+            'active': True,
+            'state': 'active'
+        })
 
     @api.one
     def button_historical(self):
-        return self.write({'active': False, 'state': 'historical',
-                           'historical_date': fields.Date.today()})
+        self.write({
+            'active': False,
+            'state': 'historical',
+            'historical_date': fields.Date.today()
+        })
 
 
 class MrpProduction(models.Model):

mrp_bom_version/views/mrp_bom_view.xml

@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <openerp>
     <data>
+        <record model="ir.actions.act_window" id="mrp.mrp_bom_form_action">
+            <field name="domain">['|',('active','=',True),('active','=',False)]</field>
+        </record>
+
         <record id="mrp.mrp_bom_tree_parent_view" model="ir.ui.view">
             <field name="name">mrp.bom.tree.parent.view</field>
             <field name="model">mrp.bom</field>
@@ -63,6 +67,11 @@
                     <field name="version" />
                     <field name="historical_date" attrs="{'invisible': [('state','!=','historical')]}"/>
                 </field>
+                <notebook position="inside">
+                    <page string="Versions">
+                        <field name="old_versions" />
+                    </page>
+                </notebook>
             </field>
         </record>
 
@@ -75,10 +84,14 @@
                     <field name="active" />
                     <field name="state" />
                 </field>
-                <filter string="Product" position="before">
+                <group string="Group By..." position="before">
+                    <filter string="Active" domain="[('active','=',True)]" name="is_active_filter"/>
+                    <filter string="Inactive" domain="[('active','=',False)]" name="is_inactive_filter"/>
+                </group>
+                <group string="Group By..." position="inside">
                     <filter string="Active" domain="[]" context="{'group_by':'active'}"/>
                     <filter string="State" domain="[]" context="{'group_by':'state'}"/>
-                </filter>
+                </group>
             </field>
         </record>