New web_domain_field addon

web_domain_field/README.rst

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+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+   :alt: License: AGPL-3
+
+================
+Web Domain Field
+================
+
+When you define a view you can specify on the relational fields a domain
+attribute. This attribute is evaluated as filter to apply when displaying
+existing records for selection.
+
+.. code-block:: xml
+
+   <field name="product_id" domain="[('type','=','product')]"/>
+
+The value provided for the domain attribute must be a string representing a
+valid Odoo domain. This string is evaluated on the client side in a
+restricted context where we can reference as right operand the values of
+fields present into the form and a limited set of functions.
+
+In this context it's hard to build complex domain and we are facing to some
+limitations as:
+
+ * The syntax to include in your domain a criteria involving values from a
+   x2many field is complex.
+ * Domains computed by an onchange on an other field are not recomputed when
+   you modify the form and don't modify the field triggering the onchange.
+ * It's not possible to extend an existing domain. You must completely redefine
+   the domain in your specialized addon
+ * ...
+
+In order to mitigate these limitations this new addon allows you to use the
+value of a field as domain of an other field in the xml definition of your
+view.
+
+.. code-block:: xml
+
+   <field name="product_id_domain" invisible="1"/>
+   <field name="product_id" domain="product_id_domain"/>
+
+The field used as domain must provide the domain as a JSON encoded string.
+
+.. code-block:: python
+
+   product_id_domain = fields.Char(
+       compute="_compute_product_id_domain",
+       readonly=True,
+       store=False,
+   )
+
+   @api.multi
+   @api.depends('name')
+   def _compute_product_id_domain(self):
+       for rec in self:
+           rec.product_id_domain = json.dumps(
+               [('type', '=', 'product'), ('name', 'like', rec.name)]
+           )
+
+
+Usage
+=====
+
+.. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
+   :alt: Try me on Runbot
+   :target: https://runbot.odoo-community.org/runbot/162/9.0
+
+
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/OCA/web/issues>`_. In case of trouble, please
+check there if your issue has already been reported. If you spotted it first,
+help us smashing it by providing a detailed and welcomed feedback.
+
+Credits
+=======
+
+Images
+------
+
+* Odoo Community Association: `Icon <https://github.com/OCA/maintainer-tools/blob/master/template/module/static/description/icon.svg>`_.
+
+Contributors
+------------
+
+* Laurent Mignon <laurent.mignon@acsone.eu>
+
+Maintainer
+----------
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+This module is maintained by the OCA.
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+To contribute to this module, please visit https://odoo-community.org.