Updated settings

-- MY PYTHONS --

class to_magento (osv.osv):
    _name = 'to.magento'
    _columns = {
        'url' : fields.Char('URL', size=32, select=2, required=True, help='An internal identification for this url'),
        'api_user' : fields.Char('API User', size=32, select=3, required=True, help='An internal identification for this API User'),
        'api_key' : fields.Char('API Key', size=32, select=4, required=True, help='An internal identification for this API Key'),
    }

class ResConfigMagento(osv.TransientModel):
    _name = 'to.magento.settings'
    _inherit = 'res.config.settings'

    _columns = {
        'magento_id' : fields.Many2one('to.magento', string='Magento'),
        'url' : fields.Char(related='magento_id.url'),
        'api_user' : fields.Char(related='magento_id.api_user'),
        'api_key' : fields.Char(related='magento_id.api_key'),
    }

    def on_change_magento_id(self, cr, uid, ids, magento_id, context=None):
        _logger.critical('ON_CHANGE_MAGENTO_ID')
        if not magento_id:
            #This means it was never configged - default values here!
            return {'value': {'url': '', 'api_user': '', 'api_key': ''}}
        magento_data = self.pool.get('to.magento').read(cr, uid, [magento_id], [], context=context)[0]
        values = {
            'url': magento_data['url'],
            'api_user': magento_data['api_user'],
            'api_user': magento_data['api_user'],
        }
        for fname, v in magento_data.items():
            if fname in self._columns:
                values[fname] = v[0] if v and self._columns[fname]._type == 'many2one' else v
        return {'value': values}

    def create(self, cr, uid, vals, context=None):
        _logger.critical('CREATE' + str (vals))
        config_id = super(ResConfigMagento, self).create(cr, uid, vals, context=context)
        self.write(cr, uid, config_id, vals, context=context)
        return config_id

    _defaults = {
        'magento_id': lambda self,cr,uid,c: self.pool.get('to.magento').search(cr, uid, [], context=c)[0]
    }

-- 	MY XML VIEW --

<record id="view_magento_config_settings_form_pos" model="ir.ui.view">
            <field name="name">to.magento.form</field>
            <field name="model">to.magento.settings</field>
            <field name="arch" type="xml">
                <form class="oe_form_configuration">
                    <header>
                        <button string="Apply" type="object" name="execute" class="oe_highlight"/>
                        <button string="Cancel" type="object" name="cancel" class="oe_link"/>
                    </header>
                    <group string="General informations">
                        <label for="id" string="URL"/>
                        <div>
                            <field name="url" class="oe_inline"/>
                        </div>
                        <label for="id" string="API User"/>
                        <div>
                            <field name="api_user" class="oe_inline"/>
                        </div>
                        <label for="id" string="API Key"/>
                        <div>
                            <field name="api_key" class="oe_inline"/>
                        </div>
                    </group>
                </form>
            </field>
        </record>

        <record id="action_magento_configuration" model="ir.actions.act_window">
            <field name="name">Configure Magento</field>
            <field name="res_model">to.magento.settings</field>
            <field name="view_mode">form</field>
            <field name="target">inline</field>
        </record>