Raise exception when search function is missing on Function fields for issue1378

CHANGELOG

@@ -1,3 +1,4 @@
+* Raise exception when search function is missing on Function fields
 * Add LRU memoization, use it to cache compiled code for safe_eval.
 * Add PySON to replace python string evaluation on client side
 * Add JSON-RPC

trytond/ir/translation.py

@@ -901,6 +901,7 @@ class TranslationClean(Wizard):
                             'required_field',
                             'foreign_model_missing',
                             'foreign_model_exist',
+                            'search_function_missing',
                             ):
                         continue
                     if model_name in self.pool.object_name_list():

trytond/ir/translation.xml

@@ -193,6 +193,15 @@ this repository contains the full copyright notices and license terms. -->
             <field name="module">ir</field>
             <field name="fuzzy" eval="False"/>
         </record>
+        <record model="ir.translation" id="translation_search_function_missing">
+            <field name="name">search_function_missing</field>
+            <field name="lang">en_US</field>
+            <field name="type">error</field>
+            <field name="src">Missing search function on field "%s".</field>
+            <field name="value">Missing search function on field "%s".</field>
+            <field name="module">ir</field>
+            <field name="fuzzy" eval="False"/>
+        </record>
 
         <record model="ir.ui.view" id="act_translation_set_report_init_view_form">
             <field name="model">ir.translation.set_report.init</field>

trytond/model/fields/function.py

@@ -92,12 +92,14 @@ class Function(Field):
         :param cursor: The database cursor.
         :param user: The user id.
         :param model: The model.
+        :param name: The name of the field.
         :param args: The search domain. See ModelStorage.search
         :param context: The context.
         :return: New list of domain.
         '''
         if not self.fnct_search:
-            return []
+            model.raise_user_error(cursor, 'search_function_missing',
+                    name, context=context)
         return getattr(model, self.fnct_search)(cursor, user, name, args,
                 context=context)