[FIX] core: always evaluate field.depends upon setup

This is necessary when a field's dependencies are given by a callable.
This functionality was broken with the support for an explicit parameter
`depends` in the fields' definition, because the implementation could
not distinguish between the field parameter `depends` and the `depends`
evaluated from compute functions.

The fix consists in storing the field parameter `depends` into
`field._depends`, and the result of the setup into `field.depends`.

closes odoo/odoo#58127

X-original-commit: d4d7925d69c9a37f099ddd3a8929004f17e162eb
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>

4 files changed, 54 insertions, 8 deletions

diff --git a/odoo/addons/test_new_api/models/test_new_api.py b/odoo/addons/test_new_api/models/test_new_api.py
index c0f7615f9d3..47df3602baa 100644
--- a/odoo/addons/test_new_api/models/test_new_api.py
+++ b/odoo/addons/test_new_api/models/test_new_api.py
@@ -595,6 +595,27 @@ class ComputeOnchangeLine(models.Model):
                                 required=True, ondelete='cascade')
 
 
+class ComputeDynamicDepends(models.Model):
+    _name = 'test_new_api.compute.dynamic.depends'
+    _description = "Computed field with dynamic dependencies"
+
+    name1 = fields.Char()
+    name2 = fields.Char()
+    name3 = fields.Char()
+    full_name = fields.Char(compute='_compute_full_name')
+
+    def _get_full_name_fields(self):
+        # the fields to use are stored in a config parameter
+        depends = self.env['ir.config_parameter'].get_param('test_new_api.full_name', '')
+        return depends.split(',') if depends else []
+
+    @api.depends(lambda self: self._get_full_name_fields())
+    def _compute_full_name(self):
+        fnames = self._get_full_name_fields()
+        for record in self:
+            record.full_name = ", ".join(filter(None, (record[fname] for fname in fnames)))
+
+
 class ComputeUnassigned(models.Model):
     _name = 'test_new_api.compute.unassigned'
     _description = "Model with computed fields left unassigned"
diff --git a/odoo/addons/test_new_api/security/ir.model.access.csv b/odoo/addons/test_new_api/security/ir.model.access.csv
index 37b088db27e..466b014f213 100644
--- a/odoo/addons/test_new_api/security/ir.model.access.csv
+++ b/odoo/addons/test_new_api/security/ir.model.access.csv
@@ -26,6 +26,7 @@ access_test_new_api_cascade,access_test_new_api_cascade,model_test_new_api_casca
 access_test_new_api_compute_readwrite,access_test_new_api_compute_readwrite,model_test_new_api_compute_readwrite,,1,1,1,1
 access_test_new_api_compute_onchange,access_test_new_api_compute_onchange,model_test_new_api_compute_onchange,,1,1,1,1
 access_test_new_api_compute_onchange_line,access_test_new_api_compute_onchange_line,model_test_new_api_compute_onchange_line,,1,1,1,1
+access_test_new_api_compute_dynamic_depends,access_test_new_api_compute_dynamic_depends,model_test_new_api_compute_dynamic_depends,,1,1,1,1
 access_test_new_api_compute_unassigned,access_test_new_api_compute_unassigned,model_test_new_api_compute_unassigned,,1,1,1,1
 access_test_new_api_binary_svg,access_test_new_api_binary_svg,model_test_new_api_binary_svg,,1,1,1,1
 access_test_new_api_monetary_base,access_test_new_api_monetary_base,model_test_new_api_monetary_base,,1,1,1,1
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 3fb741f98b9..10993c52668 100644
--- a/odoo/addons/test_new_api/tests/test_new_fields.py
+++ b/odoo/addons/test_new_api/tests/test_new_fields.py
@@ -456,6 +456,18 @@ class TestFields(TransactionCaseWithUserDemo):
         record.foo = "Ho"
         self.assertEqual(record.baz, "<[Ho]>")
 
+    def test_12_dynamic_depends(self):
+        Model = self.registry['test_new_api.compute.dynamic.depends']
+        self.assertEqual(Model.full_name.depends, ())
+
+        # the dependencies of full_name are stored in a config parameter
+        self.env['ir.config_parameter'].set_param('test_new_api.full_name', 'name1,name2')
+
+        # this must re-evaluate the field's dependencies
+        self.env['base'].flush()
+        self.registry.setup_models(self.cr)
+        self.assertEqual(Model.full_name.depends, ('name1', 'name2'))
+
     def test_13_inverse(self):
         """ test inverse computation of fields """
         Category = self.env['test_new_api.category']
diff --git a/odoo/fields.py b/odoo/fields.py
index e6325fe59d5..effdec15c78 100644
--- a/odoo/fields.py
+++ b/odoo/fields.py
@@ -222,8 +222,8 @@ class Field(MetaField('DummyField', (object,), {})):
     index = False                       # whether the field is indexed in database
     manual = False                      # whether the field is a custom field
     copy = True                         # whether the field is copied over by BaseModel.copy()
-    depends = None                      # collection of field dependencies
-    depends_context = None              # collection of context key dependencies
+    _depends = None                     # collection of field dependencies
+    _depends_context = None             # collection of context key dependencies
     recursive = False                   # whether self depends on itself
     compute = None                      # compute(recs) computes field on recs
     compute_sudo = False                # whether field should be recomputed as superuser
@@ -344,8 +344,13 @@ class Field(MetaField('DummyField', (object,), {})):
         if attrs.get('translate'):
             # by default, translatable fields are context-dependent
             attrs['depends_context'] = attrs.get('depends_context', ()) + ('lang',)
+
+        # parameters 'depends' and 'depends_context' are stored in attributes
+        # '_depends' and '_depends_context', respectively
         if 'depends' in attrs:
-            attrs['depends'] = tuple(attrs['depends'])
+            attrs['_depends'] = tuple(attrs.pop('depends'))
+        if 'depends_context' in attrs:
+            attrs['_depends_context'] = tuple(attrs.pop('depends_context'))
 
         return attrs
 
@@ -407,7 +412,10 @@ class Field(MetaField('DummyField', (object,), {})):
 
     def _setup_regular_full(self, model):
         """ Determine the dependencies and inverse field(s) of ``self``. """
-        if self.depends is not None:
+        if self._depends is not None:
+            # the parameter 'depends' has priority over 'depends' on compute
+            self.depends = self._depends
+            self.depends_context = self._depends_context or ()
             return
 
         # determine the functions implementing self.compute
@@ -420,7 +428,7 @@ class Field(MetaField('DummyField', (object,), {})):
 
         # collect depends and depends_context
         depends = []
-        depends_context = list(self.depends_context or ())
+        depends_context = list(self._depends_context or ())
         for func in funcs:
             deps = getattr(func, '_depends', ())
             depends.extend(deps(model) if callable(deps) else deps)
@@ -460,7 +468,9 @@ class Field(MetaField('DummyField', (object,), {})):
             raise TypeError("Type of related field %s is inconsistent with %s" % (self, field))
 
         # determine dependencies, compute, inverse, and search
-        if self.depends is None:
+        if self._depends is not None:
+            self.depends = self._depends
+        else:
             self.depends = ('.'.join(self.related),)
         self.compute = self._compute_related
         if self.inherited or not (self.readonly or field.readonly):
@@ -486,7 +496,9 @@ class Field(MetaField('DummyField', (object,), {})):
                 self.required = True
             self._modules.update(field._modules)
 
-        if field.depends_context:
+        if self._depends_context is not None:
+            self.depends_context = self._depends_context
+        else:
             self.depends_context = field.depends_context
 
     def traverse_related(self, record):
@@ -1883,7 +1895,7 @@ class Binary(Field):
     type = 'binary'
 
     prefetch = False                    # not prefetched by default
-    depends_context = ('bin_size',)     # depends on context (content or size)
+    _depends_context = ('bin_size',)    # depends on context (content or size)
     attachment = True                   # whether value is stored in attachment
 
     @property