no i have {'group_by':'departement'} and إدارة is juste one departement. my problem is related to the arabic caracter.

Hi Mehdi,

if i understand your question you need to defin search view and specify your parameters

<!-- search -->

<record model="ir.ui.view" id="view_search">

<field name="name">model.search</field>

<field name="model">your_model</field>

<field name="type">search</field>

<group expand="0" string="Grouper par ...">

<filter string="إدارة" domain="[]" context="{'group_by':'إدارة'}"/>

</group>

</search>

</field>

</record>

i hope  this help you