Allow sharing view searches

We add a rule to give read access to all view searches without a user.
We manage the delete access on client side thanks to the _delete attribute.
If the user does not have the delete right, the bookmark star is disabled.

issue9515
review323751002

CHANGELOG

@@ -1,3 +1,4 @@
+* Allow sharing view searches
 * Allow overriding digits in Lang.currency and Report.format_currency
 * Add record name in report filename
 * Add deletable and writable state from ir.rule to read

trytond/ir/ui/view.py

@@ -383,8 +383,7 @@ class ViewSearch(ModelSQL, ModelView):
     name = fields.Char('Name', required=True)
     model = fields.Char('Model', required=True)
     domain = fields.Char('Domain', help="The PYSON domain.")
-    user = fields.Many2One('res.user', 'User', required=True,
-        ondelete='CASCADE')
+    user = fields.Many2One('res.user', 'User', ondelete='CASCADE')
 
     @classmethod
     def __setup__(cls):
@@ -393,20 +392,29 @@ class ViewSearch(ModelSQL, ModelView):
                 'get_search': RPC(),
                 })
 
+    @classmethod
+    def __register__(cls, module):
+        super().__register__(module)
+        table_h = cls.__table_handler__(module)
+
+        # Migration from 5.6: remove user required
+        table_h.not_null_action('user', 'remove')
+
     @staticmethod
     def default_user():
         return Transaction().user
 
     @classmethod
-    def get_search(cls, user_id=None):
-        if user_id is None:
-            user_id = Transaction().user
+    def get_search(cls):
         decoder = PYSONDecoder()
-        searches = cls.search([
-                ('user', '=', user_id),
-                ], order=[('model', 'ASC'), ('name', 'ASC')])
+        searches = cls.search_read(
+            [], order=[('model', 'ASC'), ('name', 'ASC')],
+            fields_names=['id', 'name', 'model', 'domain', '_delete'])
         result = {}
         for search in searches:
-            result.setdefault(search.model, []).append(
-                (search.id, search.name, decoder.decode(search.domain)))
+            result.setdefault(search['model'], []).append((
+                    search['id'],
+                    search['name'],
+                    decoder.decode(search['domain']),
+                    search['_delete']))
         return result

trytond/res/ir.xml

@@ -836,6 +836,24 @@ this repository contains the full copyright notices and license terms. -->
             <field name="rule_group" ref="rule_group_view_search"/>
         </record>
 
+        <record model="ir.rule.group" id="rule_group_view_search_common">
+            <field name="name">Common view search</field>
+            <field name="model" search="[('model', '=', 'ir.ui.view_search')]"/>
+            <field name="global_p" eval="False"/>
+            <field name="default_p" eval="True"/>
+            <field name="perm_read" eval="True"/>
+            <field name="perm_write" eval="False"/>
+            <field name="perm_create" eval="False"/>
+            <field name="perm_delete" eval="False"/>
+        </record>
+        <record model="ir.rule" id="rule_group_view_search_common1">
+            <field
+                name="domain"
+                eval="[('user', '=', None)]"
+                pyson="1"/>
+            <field name="rule_group" ref="rule_group_view_search_common"/>
+        </record>
+
         <record model="ir.rule.group" id="rule_group_view_search_admin">
             <field name="name">Any view search</field>
             <field name="model"