[IMP] add attribute filters in attribute view

attribute_usability/__init__.py

@@ -0,0 +1 @@
+from . import attribute

attribute_usability/__openerp__.py

@@ -8,7 +8,8 @@
     'category': 'Product',
     'summary': "Attribute views improved",
     'description': """
-Add a form view to Attribute and Attribute Value views
+- Create filter dynamically for each attributes in attribute values search view
+- Add a form view to Attribute and Attribute Value views
 
 Contributors: David BEAL
     """,

attribute_usability/attribute.py

@@ -0,0 +1,42 @@
+# coding: utf-8
+# © 2016 David BEAL @ Akretion
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openerp import models, fields, api
+from lxml import etree
+
+
+class ProductAttributeValue(models.Model):
+    _inherit = 'product.attribute.value'
+
+    @api.model
+    def _get_attributes_to_filter(self):
+        """ Inherit if you want reduce the list """
+        return [(x.id, x.name)
+                for x in self.env['product.attribute'].search([])]
+
+    @api.model
+    def _customize_attribute_filters(self, my_filter):
+        """ Inherit if you to customize search filter display"""
+        return {
+            'string': "%s" % my_filter[1],
+            'help': 'Filtering by Attribute',
+            'domain': "[('attribute_id','=', %s)]" % my_filter[0]}
+
+    @api.model
+    def fields_view_get(self, view_id=None, view_type='form',
+                        toolbar=False, submenu=False):
+        """ customize xml output
+        """
+        res = super(ProductAttributeValue, self).fields_view_get(
+            view_id=view_id, view_type=view_type, toolbar=toolbar,
+            submenu=submenu)
+        if view_type == 'search':
+            filters_to_create = self._get_attributes_to_filter()
+            doc = etree.XML(res['arch'])
+            for my_filter in filters_to_create:
+                elm = etree.Element(
+                    'filter', **self._customize_attribute_filters(my_filter))
+                doc[0].addprevious(elm)
+            res['arch'] = etree.tostring(doc, pretty_print=True)
+        return res