[FIX] agreement: Issue #290

agreement/models/agreement_appendix.py

@@ -51,7 +51,7 @@ class AgreementAppendix(models.Model):
 
     @api.onchange('field_id')
     def onchange_sub_object_id(self):
-        if self.field_id:
+        if self.field_id and self.field_id.relation:
             self.sub_object_id = self.env['ir.model'].search(
                 [('model', '=', self.field_id.relation)])[0]
 

agreement/models/agreement_clause.py

@@ -60,7 +60,7 @@ class AgreementClause(models.Model):
 
     @api.onchange('field_id')
     def onchange_sub_object_id(self):
-        if self.field_id:
+        if self.field_id and self.field_id.relation:
             self.sub_object_id = self.env['ir.model'].search(
                 [('model', '=', self.field_id.relation)])[0]
 

agreement/models/agreement_recital.py

@@ -52,7 +52,7 @@ class AgreementRecital(models.Model):
 
     @api.onchange('field_id')
     def onchange_sub_object_id(self):
-        if self.field_id:
+        if self.field_id and self.field_id.relation:
             self.sub_object_id = self.env['ir.model'].search(
                 [('model', '=', self.field_id.relation)])[0]
 

agreement/models/agreement_section.py

@@ -51,7 +51,7 @@ class AgreementSection(models.Model):
 
     @api.onchange('field_id')
     def onchange_sub_object_id(self):
-        if self.field_id:
+        if self.field_id and self.field_id.relation:
             self.sub_object_id = self.env['ir.model'].search(
                 [('model', '=', self.field_id.relation)])[0]