Here is my code :

I have added to two fields in res.users and shown in User Preferences view but still these fields are readonly. How to make these fields WRITEABLE_FIELDS for all users??

#####Python Code#######

class res_users(models.Model):

    _inherit = 'res.users'

    notify_sms = fields.Boolean(string='Receive Notification by SMS')

    mob_number = fields.Char(string="Mobile Number")

     def __init__(self, pool, cr):

            """ Override of __init__ to add access rights on notification_email_send and alias fields. Access rights are disabled by                      default, but allowed  on some specific fields defined in self.SELF_{READ/WRITE}ABLE_FIELDS."""

            init_res = super(res_users, self).__init__(pool, cr)

            self.SELF_WRITEABLE_FIELDS = list(self.SELF_WRITEABLE_FIELDS)

            self.SELF_WRITEABLE_FIELDS.extend(['notify_sms',"mob_number"])

            return init_res

######XML#####

<?xml version="1.0" encoding="utf-8"?>

<openerp>

<data>

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

<field name="name">Inhetitance In Preference</field>

<field name="model">res.users</field>

<field name="inherit_id" ref="base.view_users_form"/>

<field name="arch" type="xml">

<xpath expr="//page/group/field[@name='signature']" position="before">

<field name="notify_sms"/>

<field name="mob_number" class="oe_inline" placeholder="e.g. +919898989898" attrs="{'invisible': [('notify_sms', '=', False)]}"/>

</xpath>

</field>

</record>

<record id="add_to_user_preferences2" model="ir.ui.view">

<field name="name">Inhetitance In Preference2</field>

<field name="model">res.users</field>

<field name="inherit_id" ref="base.view_users_form_simple_modif"/>

<field name="arch" type="xml">

<xpath expr="/form/group[@name='preferences']" position="after">

<group string="SMS Preferences" col='4'>

<field name="notify_sms"/>

<field name="mob_number" placeholder="e.g. +919898989898" attrs="{'invisible': [('notify_sms', '=', False)]}"/>

</group>

</xpath>

</field>

</record>

</data>

</openerp>

Please suggest me the solution.

Thanks in advance