[FIX] models: callable in api.depends() sees valid _rec_name

Determine `model._rec_name` before the dependencies of the fields.  The
compute method of the automatic field `display_name` uses a callable
depends that retrieves `model._rec_name`.

closes odoo/odoo#36476

Signed-off-by: Christophe Simonis <chs@odoo.com>

3 files changed, 28 insertions, 15 deletions

diff --git a/odoo/addons/test_new_api/tests/test_new_fields.py b/odoo/addons/test_new_api/tests/test_new_fields.py
index 492255df83e..9ca97ea3e8a 100644
--- a/odoo/addons/test_new_api/tests/test_new_fields.py
+++ b/odoo/addons/test_new_api/tests/test_new_fields.py
@@ -80,6 +80,13 @@ class TestFields(common.TransactionCase):
         field = self.env['test_new_api.message']._fields['x_bool_false_computed']
         self.assertFalse(field.depends)
 
+    def test_10_display_name(self):
+        """ test definition of automatic field 'display_name' """
+        field = type(self.env['test_new_api.discussion']).display_name
+        self.assertTrue(field.automatic)
+        self.assertTrue(field.compute)
+        self.assertEqual(field.depends, ('name',))
+
     def test_10_non_stored(self):
         """ test non-stored fields """
         # a field declared with store=False should not have a column
diff --git a/odoo/fields.py b/odoo/fields.py
index e61b7e2297a..a9e76695d8d 100644
--- a/odoo/fields.py
+++ b/odoo/fields.py
@@ -490,6 +490,10 @@ class Field(MetaField('DummyField', (object,), {})):
 
     def _setup_regular_base(self, model):
         """ Setup the attributes of a non-related field. """
+        pass
+
+    def _setup_regular_full(self, model):
+        """ Determine the dependencies and inverse field(s) of ``self``. """
         if self.depends is not None:
             return
 
@@ -507,10 +511,6 @@ class Field(MetaField('DummyField', (object,), {})):
         else:
             self.depends = tuple(get_depends(self.compute))
 
-    def _setup_regular_full(self, model):
-        """ Setup the inverse field(s) of ``self``. """
-        pass
-
     #
     # Setup of related fields
     #
@@ -2428,8 +2428,8 @@ class _RelationalMulti(_Relational):
             for record in records:
                 record[self.name] = record[self.name].filtered(accessible)
 
-    def _setup_regular_base(self, model):
-        super(_RelationalMulti, self)._setup_regular_base(model)
+    def _setup_regular_full(self, model):
+        super(_RelationalMulti, self)._setup_regular_full(model)
         if isinstance(self.domain, list):
             self.depends += tuple(
                 self.name + '.' + arg[0]
diff --git a/odoo/models.py b/odoo/models.py
index 591a237565c..7d6962f0e23 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -2622,6 +2622,15 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
 
         cls._setup_done = True
 
+        # 5. determine and validate rec_name
+        if cls._rec_name:
+            assert cls._rec_name in cls._fields, \
+                "Invalid rec_name %s for model %s" % (cls._rec_name, cls._name)
+        elif 'name' in cls._fields:
+            cls._rec_name = 'name'
+        elif 'x_name' in cls._fields:
+            cls._rec_name = 'x_name'
+
     @api.model
     def _setup_fields(self):
         """ Setup the fields, except for recomputation triggers. """
@@ -2646,6 +2655,12 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
             del cls._fields[name]
             delattr(cls, name)
 
+        # fix up _rec_name
+        if 'x_name' in bad_fields and cls._rec_name == 'x_name':
+            cls._rec_name = None
+            field = cls._fields['display_name']
+            field.depends = tuple(name for name in field.depends if name != 'x_name')
+
         # map each field to the fields computed with the same method
         groups = defaultdict(list)
         for field in cls._fields.values():
@@ -2674,15 +2689,6 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
         # register constraints and onchange methods
         cls._init_constraints_onchanges()
 
-        # validate rec_name
-        if cls._rec_name:
-            assert cls._rec_name in cls._fields, \
-                "Invalid rec_name %s for model %s" % (cls._rec_name, cls._name)
-        elif 'name' in cls._fields:
-            cls._rec_name = 'name'
-        elif 'x_name' in cls._fields:
-            cls._rec_name = 'x_name'
-
     @api.model
     def fields_get(self, allfields=None, attributes=None):
         """ fields_get([fields][, attributes])