[FIX] mrp, resource: Wrong default value for Time Efficiency

The time efficiency cannot be set to 0 otherwise it raised an error
when creating a workorder.

opw:751638, 752035

addons/mrp/models/mrp_workcenter.py

@@ -15,7 +15,7 @@ class MrpWorkcenter(models.Model):
 
     # resource
     name = fields.Char(related='resource_id.name', store=True)
-    time_efficiency = fields.Float('Time Efficiency', related='resource_id.time_efficiency', store=True)
+    time_efficiency = fields.Float('Time Efficiency', related='resource_id.time_efficiency', default=100, store=True)
     active = fields.Boolean('Active', related='resource_id.active', default=True, store=True)
 
     code = fields.Char('Code', copy=False)

addons/resource/i18n/resource.pot

@@ -441,6 +441,12 @@ msgstr ""
 msgid "This field is used to calculate the the expected duration of a work order at this work center. For example, if a work order takes one hour and the efficiency factor is 100%, then the expected duration will be one hour. If the efficiency factor is 200%, however the expected duration will be 30 minutes."
 msgstr ""
 
+#. module: resource
+#: code:addons/resource/models/resource.py:667
+#, python-format
+msgid "The efficiency factor cannot be equal to 0."
+msgstr ""
+
 #. module: resource
 #: selection:resource.calendar.attendance,dayofweek:0
 msgid "Thursday"

addons/resource/models/resource.py

@@ -659,6 +659,13 @@ class ResourceResource(models.Model):
         required=True,
         help="Define the schedule of resource")
 
+    @api.multi
+    @api.constrains('time_efficiency')
+    def _check_time_efficiency(self):
+        for record in self:
+            if record.time_efficiency == 0:
+                raise ValidationError(_('The efficiency factor cannot be equal to 0.'))
+
     @api.model
     def create(self, values):
         if values.get('company_id') and not values.get('calendar_id'):