[IMP] base_import_module: correct validation of custom views

Consider also imported and exported views when validating custom views.

addons/base_import_module/models/__init__.py

@@ -1,3 +1,5 @@
 # -*- coding: utf-8 -*-
+# flake8: noqa
 import ir_module
 import base_import_module
+import ir_ui_view

addons/base_import_module/models/ir_ui_view.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from operator import itemgetter
+from openerp import api, models
+
+class IrUiView(models.Model):
+    _inherit = 'ir.ui.view'
+
+    @api.model
+    def _validate_custom_views(self, model):
+        # views from imported modules should be considered as custom views
+        result = super(IrUiView, self)._validate_custom_views(model)
+
+        self._cr.execute("""
+            SELECT max(v.id)
+               FROM ir_ui_view v
+          LEFT JOIN ir_model_data md ON (md.model = 'ir.ui.view' AND md.res_id = v.id)
+          LEFT JOIN ir_module_module m ON (m.name = md.module)
+              WHERE m.imported = true
+                AND v.model = %s
+                AND v.active = true
+           GROUP BY coalesce(v.inherit_id, v.id)
+        """, [model])
+
+        ids = map(itemgetter(0), self._cr.fetchall())
+        views = self.with_context(load_all_views=True).browse(ids)
+        return views._check_xml() and result