How to Override the Create Method in Odoo

Abid Patel
10-Oct-2024 Updated : 10-Oct-2024

Learn how to override the create method in Odoo to add custom validation, logic, or actions when creating new records. Complete examples and best practices included.

How to Override the Create Method in Odoo

The create method in Odoo is responsible for creating new records in the database. It is one of the most commonly used methods in Odoo's ORM (Object-Relational Mapping) framework. Overriding this method allows developers to add custom logic that gets executed when a record is created. In this blog, we will guide you through the steps to override the create method in Odoo with code examples to help you understand how to extend its functionality.

Why Override the Create Method?

Overriding the create method can be useful when you need to validate input, manipulate data, or trigger additional processes whenever a new record is added to a specific model. By overriding the method, you can inject custom behavior before or after the original create method is executed.

How to Override the Create Method in Odoo

To override the create method in Odoo, you need to inherit the model where you want to apply your changes and then redefine the create method. Here’s a step-by-step guide with a practical example:

Example of Overriding the Create Method in Odoo

In this example, we will override the create method in the res.partner model (which handles partner/customer records). We'll add a validation to ensure that every partner record has an email address.

Python

from odoo import models, fields, api

class CustomPartner(models.Model):
    _inherit = 'res.partner'

    def create(self, vals):
        # Custom logic: Ensure that email is provided
        if not vals.get('email'):
            raise ValueError("An email address is required for a partner.")
        
        # Call the parent method to ensure original behavior is executed
        return super(CustomPartner, self).create(vals)

In this example:

  • ▹ We inherit the res.partner model using _inherit.
  • ▹ We add a custom validation to check whether the email field is present in the vals dictionary. If it isn’t, a ValueError is raised.
  • ▹ We use super() to call the original create method to ensure that the default behavior (creating the record) still takes place after our custom logic is executed.

Adding Custom Fields or Logic Before Creating a Record

You can also manipulate the data before the record is created. For instance, let’s add a default value to a custom field if it’s not provided:

Python

from odoo import models, fields

class CustomSaleOrder(models.Model):
    _inherit = 'sale.order'

    def create(self, vals):
        # Custom logic: Add a default value for custom_field if not provided
        if 'custom_field' not in vals:
            vals['custom_field'] = 'Default Value'
        
        # Call the original create method
        return super(CustomSaleOrder, self).create(vals)

In this case, if the user doesn’t specify a value for custom_field, the system automatically assigns a default value of "Default Value" before creating the record.

Overriding the Create Method with Complex Logic

You can also include more complex logic, such as updating related models or triggering additional actions. For example, let’s notify the user when a new sale order is created:

Python

from odoo import models, fields

class CustomSaleOrder(models.Model):
    _inherit = 'sale.order'

    def create(self, vals):
        # Create the sale order record
        record = super(CustomSaleOrder, self).create(vals)

        # Trigger a custom action after creating the record
        # For example: Send a notification
        self.env.user.notify_success('Sale Order Created Successfully!')

        return record

In this example:

  • ▹ We create the sale order record using the original create method.
  • ▹ After the record is created, we trigger a custom notification for the user.

Best Practices for Overriding the Create Method in Odoo

Here are some best practices to keep in mind when overriding the create method in Odoo:

  • ▹ Always use super(): When overriding a method, always call the original method using super() to ensure the default behavior is preserved.
  • ▹ Keep logic simple: Avoid adding overly complex logic inside the create method to ensure maintainability and performance.
  • ▹ Validate data: Use the create method to validate or manipulate data before creating a record to ensure data integrity.

Conclusion

Overriding the create method in Odoo provides a powerful way to inject custom behavior during the record creation process. Whether you’re adding custom validation, setting default values, or triggering additional actions, this method allows you to tailor Odoo’s functionality to your business needs. Always remember to use super() to maintain Odoo’s default behavior while extending it with your custom logic.

For more Odoo development tips and tricks, be sure to check our website Free web snippets.

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