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============
Fuzzy Search
============
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This addon provides the ability to create GIN or GiST indexes of char and text
fields and also to use the search operator `%` in search domains. Currently
this module doesn't change the backend search or anything else. It provides
only the possibility to perform the fuzzy search for external addons.
**Table of contents**
.. contents::
:local:
Installation
============
#. The PostgreSQL extension ``pg_trgm`` should be available. In debian based
distribution you have to install the `postgresql-contrib` module.
#. Install the ``pg_trgm`` extension to your database or give your postgresql
user the ``SUPERUSER`` right (this allows the odoo module to install the
extension to the database).
Configuration
=============
If the odoo module is installed:
#. You can define ``GIN`` and ``GiST`` indexes for `char` and `text` via
`Settings -> Database Structure -> Trigram Index`. The index name will
automatically created for new entries.
Usage
=====
#. You can create an index for the `name` field of `res.partner`.
#. In the search you can use:
``self.env['res.partner'].search([('name', '%', 'Jon Miller)])``
#. In this example the function will return positive result for `John Miller`
or `John Mill`.
#. You can tweak the number of strings to be returned by adjusting the set
limit (default: 0.3). NB: Currently you have to set the limit by executing
the following SQL statement:
``self.env.cr.execute("SELECT set_limit(0.2);")``
#. Another interesting feature is the use of ``similarity(column, 'text')``
function in the ``order`` parameter to order by similarity. This module just
contains a basic implementation which doesn't perform validations and has to
start with this function. For example you can define the function as
followed:
``similarity(%s.name, 'John Mil') DESC" % self.env['res.partner']._table``
For further questions read the Documentation of the
`pg_trgm <https://www.postgresql.org/docs/current/static/pgtrgm.html>`_ module.
Known issues / Roadmap
======================
* Modify the general search parts (e.g. in tree view or many2one fields)
* Add better `order by` handling
Bug Tracker
===========
Bugs are tracked on `GitHub Issues <https://github.com/OCA/server-tools/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 <https://github.com/OCA/server-tools/issues/new?body=module:%20base_search_fuzzy%0Aversion:%2012.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
Do not contact contributors directly about support or help with technical issues.
Credits
=======
Authors
~~~~~~~
* bloopark systems GmbH & Co. KG
* Eficent
* Serpent CS
Contributors
~~~~~~~~~~~~
* Christoph Giesel <https://github.com/christophlsa>
* Jordi Ballester <jordi.ballester@eficent.com>
* Serpent Consulting Services Pvt. Ltd. <support@serpentcs.com>
* Dave Lasley <dave@laslabs.com>
* `Tecnativa <https://www.tecnativa.com>`_:
* Vicent Cubells
* Ernesto Tejeda
Maintainers
~~~~~~~~~~~
This module is maintained by the OCA.
.. image:: https://odoo-community.org/logo.png
:alt: Odoo Community Association
:target: https://odoo-community.org
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.
This module is part of the `OCA/server-tools <https://github.com/OCA/server-tools/tree/12.0/base_search_fuzzy>`_ project on GitHub.
You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.
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