Hi,

You are using following which is correct for selection field:

attrs="{'invisible':[('lang_mat', '!=', 'eng')]}"

You can use another operators like : 'in' or 'not in' and check.

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Skype : acespritech

You can add an invisible field on your view (invisible="1") relating to a function field in your model. There you can evolve by anything you want and return a stringm bool or number and so in to evaluate if another field is visible or maybe readonly:

The View:

<field name="write_if_manager" attrs="{'readonly':['|',('is_manager', '==', 'false'),('state','not in','['draft']') ] }/>
<field name="is_manager" invisible="1"/>

The class looks like

class classname(osv.osv): 
    ...
    def _is_manager(cr, uid, ids ...
        res = {}
        for this_id in ids:
            if obj_users.has_group(cr, uid, 'MANAGER-GROUPNAME'):
                res[this_id] = manager
        return res
    ...
    _columns = {
        'is_manager':fields.function(_is_manager, type='boolean' ...
        'write_if_manager':fields.char( ...)

I have an issue please help me.

<record id="view_order_form_inherit" model="ir.ui.view">
 <field name="name">sale.order.form</field>
 <field name="model">sale.order</field> 
<field name="inherit_id" ref="sale.view_order_form"/>
 <field name="arch" type="xml"> 
<xpath expr="//field[@name='payment_term_id']" position="after"> 
   <field name="head_option"/>
</xpath>
    <xpath expr="//field[@name='order_line']/tree/field[@name='product_id']" position="before">
         <field name="head" attrs="{'required':[('head_option','=',True)], 'invisible':[('head_option','=',False)]}"/>
</xpath>

he head option is a Boolean field that is in the sale order. and head option is in the sale order_line tree view..

so attrs can't work.
replay ur answers,...

Hi,thank u for your answer;it work's with a boolean fields but i have an error when the type of field is a selection it doesn't work...

file.py

class student(osv.osv): 
    _name = 'student'
    _order = 'name, prenom'
    _description = 'Informations sur l etudiants'
    _columns = {
        'name': fields.char('Nom Famille', size=64),
        'prenom': fields.char('Prenom', size=64),
        'married':fields.boolean('marri'),
        'boy':fields.char('boyfriend',size=30),
        'lang_mat':fields.selection([('eng','English'), ('fr','French')], 'Langue Maternelle'),
        'email':fields.char('E-mail',size=14),
    }

student()

file.xml

<openerp> <data> <menuitem name="marriedbis" id="menu_stage_parent"/>
<menuitem name="enseignant" id="menu_enseignant_parent1" parent="menu_stage_parent"/>

<record model="ir.ui.view" id="view_school_student_form">
    <field name="name">student.form</field>
    <field name="model">student</field>
    <field name="type">form</field>
    <field name="arch" type="xml">
        <form string="Information Eleve">
                    <field name="name" colspan="6" />
                    <field name="prenom" colspan="6"/>  
                    <field name="married" colspan="6"/> 
                    <field name="lang_mat" colspan="6"/>    
                    <field name="boy" attrs="{'invisible':[('lang_mat', '!=', 'eng')]}" />
      </form>
    </field>
</record>


<record model="ir.ui.view" id="view_school_student_tree">
    <field name="name">student.tree</field>
    <field name="model">student</field>
    <field name="type">tree</field>
    <field name="arch" type="xml">
        <tree string="stages.enseignant">
            <field name="name"/>
            <field name="prenom"/>
        </tree>
    </field>
</record>
<record model="ir.actions.act_window" id="action_school_student_form">
    <field name="name">Eleves</field>
    <field name="res_model">student</field>
    <field name="view_type">form</field>
    <field name="view_mode">tree,form</field>
</record>

<!--  Et finalement il y a le menu qui contient l'action pour ouvrir la vue tree de ton module -->

<menuitem action="action_school_student_form" id="menu_stages_enseignant" parent="menu_enseignant_parent1" />

</data> </openerp>