Hello, odoo devs,

I'm trying to learn inheritance using ODOO 11, I built a simple module that displays TODO-List, after that, i developed another module that is responsible for adding new fields on the first module view (form & view) using inheritance mechanism.  The problem the new fields do not show after installing the second module.

Any help, please ?

The first module python & XML files :

# -*- coding: utf-8 -*-
from odoo import models, fields, api
import logging
_logger = logging.getLogger(__name__)
class TodoTask(models.Model):    
    _name = 'todo.task'
    name = fields.Char("name", required=True)
    active = fields.Boolean("Is active ?", default=True)
    is_done = fields.Boolean("Is done ?")
    @api.multi
    def do_toggle_done(self):
        for task in self:
            task.is_done = not task.is_done
            log_data = str(task.name) + (" is done" if task.is_done else " not done yet")
            self.show_log(log_data)
        return True
    @api.multi 
   def do_clear_done(self):
        dones = self.search([('is_done', '=', 'True')])
        dones.write({'active': False})
        return True
    @api.model
    def show_log(self, log_data):
        _logger.critical(str(log_data))jdf

<?xml version="1.0" encoding="utf-8"?>
<odoo>
<data>
    <!--Task form view-->
    <record model="ir.ui.view" id="view_form_todo_task">
        <field name="name">Todo tasks form</field>
        <field name="model">todo.task</field>
        <field name="arch" type="xml">
            <form string="Todo Task">
                <header>
                    <button name="do_toggle_done" type="object" string="Toggle done" class="oe_highlight"/>
                    <button name="do_clear_done" type="object" string="Clear All Done"/>
                </header>
                <sheet>
                    <group name="group_task_info_top">
                        <field name="name" placeholder="Task's description" required="True"/>
                        <group name="group_task_info_right">
                            <field name="is_done"/>
                        </group>
                        <group name='group_task_info_left'>
                            <field name="active" readonly="1"/>
                        </group>
                    </group>
                </sheet>
            </form>
        </field>
    </record>
    <!--Task tree view-->
    <record model="ir.ui.view" id="view_tree_todo_task">
        <field name="name">Todo tasks list</field>
        <field name="model">todo.task</field>
        <field name="arch" type="xml">
            <tree colors="decoration-muted:is_done==True">
                <field name="name"/>
                <field name="is_done"/> 
           </tree>
        </field>
    </record>
    <!--Task Search view-->
    <record model="ir.ui.view" id="view_search_todo_task">
        <field name="name">Todo tasks search</field>
        <field name="model">todo.task</field>
        <field name="arch" type="xml">
            <search>
                <field name="name"/>
                <filter string="Not Done" domain="[('is_done','=',False)]"/>
                <filter string="Done" domain="[('is_done','=',True)]"/>
            </search>
        </field>
    </record>
</data>
</odoo>

The second module python & XML files:

# -*- coding: utf-8 -*-
from odoo import models, fields, api
from odoo.exceptions import ValidationError
class TodoTask(models.Model):
    _inherit = 'todo.task'
    # Adding new filed
    user = fields.Many2one('res.users', string='Responsible')
    deadline = fields.Date("Deadline")
    # Modifying existing fields
    name = fields.Char(help="What needs to be done ?")
    # Overriding methods
    @api.multi
    def do_clear_done(self):
        dones = self.search\
                ([
                            ('is_done', '=', True),
                            '|',
                            ('user', '=', self.env.uid),
                            ('user', '=', False)
                ])
        for done in dones:
            done.write({'active': False})
        return True
    @api.multi
    def do_toggle_done(self):
        for task in self:
            if task.user != self.env.uid:
                raise ValidationError('Only the responsible van do this !')
        return super(TodoTask, self).do_toggle_done()