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By: Nimisha Muralidhar

How to Create Wizard in Odoo 13

Technical Odoo 13 Manufacturing

Wizards are used for the interactive sessions with the dialogue boxes in Odoo. Mainly there are two types of models, transient and abstract.

Transient models:

It's based on models. TransientModel class. Data stored in the database is temporary in this class. It periodically clears the data from the database table.

Abstract models:

Most of the models in Odoo are of models. Model class. It has permanent data persistence. Data stored in the table created are permanent until deleted.

Data in the wizard requires only temporary storage so Odoo uses a transient model, where data is stored temporarily. Following are the characteristics of the transient model:

* Records in the wizard require only temporary storage, so they are deleted after some time from the database.

* Users have all permissions on wizard records, they don't require explicit access rights.

* Records in the wizard can refer through many2one fields or to regular records, but regular records cannot refer through many2one fields or to wizard records.

Let's check with an example:

Here I am going to define a wizard to select the multiple manufacturing orders and mark as done state altogether.

class MrpProductWizard(models.TransientModel):
   _name = 'mrp.product.produce.wizard'
   produce_line_ids = fields.One2many('mrp.product.produce.wizard.line', 'product_produce_id',
                                      string='Product to Track')
   # Method to mark the mrp orders as done
   def action_done(self):
       for line in self.produce_line_ids.mapped('production_id'):

In the above code, I define an one2many field to select the MRP orders and a method which performs “Mark as done” on a button click.

class MrpProductProduceWizardLine(models.TransientModel):
   _name = "mrp.product.produce.wizard.line"
   _description = "Record Production Line"
   product_produce_id = fields.Many2one('mrp.product.produce.wizard')
   production_id = fields.Many2one('mrp.production')
   product_id = fields.Many2one('product.product', 'Product')
   qty = fields.Float('Quantity')

I have created another wizard for the model mrp.product.produce.wizard.line  with the respective fields which is defined as a produce_line_ids field in the above wizard.

<record id="view_mrp_product_done_wizard" model="ir.ui.view">
   <field name="name">mrp.product.produce.wizard.view</field>
   <field name="model">mrp.product.produce.wizard</field>
   <field name="type">form</field>
   <field name="arch" type="xml">
           <field name="produce_line_ids" widget="one2many_list">
               <tree string="Mrp production lines" editable="bottom">
                   <field name="product_produce_id" invisible="1"/>
                   <field name="production_id"/>
                   <field name="product_id"/>
                   <field name="qty"/>
               <button name="action_done" string="Confirm" type="object" class="oe_highlight"/>
               <button string="Cancel" class="btn btn-default" special="cancel"/>
Above XML code is the view of the wizard.

Next is to define a method which returns the action to the wizard

class MrpProduction(models.Model):
   _inherit = 'mrp.production'
   # Method for the wizard Mark as Done
   def action_done_show_wizard(self):
       production_ids = self.env['mrp.production'].browse(self._context.get('active_ids', False))
       lines = []
       for line in production_ids:
           vals = (0, 0, {
               'production_id': line.id,
               'product_id': line.product_id.id,
               'qty': line.product_qty
       return {'type': 'ir.actions.act_window',
               'name': _('Mark as Done'),
               'res_model': 'mrp.product.produce.wizard',
               'target': 'new',
               'view_id': self.env.ref('multiple_mrp_orders.view_mrp_product_done_wizard').id,
               'view_mode': 'form',
               'context': {'default_produce_line_ids': lines}

Here I append the lines which have to be displayed in the wizard and we can pass it in the context. 

res_model  : Model of the wizard that has to appear.

view_id  : xml view of the wizard.

view_mode : wizard appears in the form view so it is form.

One can pass the values through context to display in the wizard.

Here I need the wizard in the action button, so added the following code to the XML file,

<record id="mrp_production_done_action_server" model="ir.actions.server">
   <field name="name">Mark as Done</field>
   <field name="type">ir.actions.server</field>
   <field name="model_id" ref="mrp.model_mrp_production"/>
   <field name="binding_model_id" ref="mrp.model_mrp_production"/>
   <field name="state">code</field>
   <field name="code">
       action = model.action_done_show_wizard()

One can add the wizard even in the button, for that add the method name as the button name 

<button name="action_done_show_wizard" string="Wizard" type="object" class="oe_highlight"/>

Output wizard is shown in the figure below,


To perform more action on the confirm button, one can add an additional method for the button confirm.

If you need any assistance in odoo, we are online, please chat with us.

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James Carr-Saunders

Thank you for writing such a clear and useful walk through. This is just what I was looking for!




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