The document discusses many2many fields in Odoo 15 which allow objects to be related to multiple other objects. Many2many fields store multiple rows of a relation. In the example, a "Tags" field for an object is defined as a many2many field, allowing it to store multiple tag values for that object. Developers define many2many fields in the Python file using the fields.many2many() method and provide the related model. In XML views, many2many fields are displayed using the many2many_tags widget which shows linked items as tags.

1. Many2many Field
in Odoo 15
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2. INTRODUCTION
❖ Odoo supports several fields for better data handling with specific options for each type.
The fields can be categorized into 3 types:
○ Simple Types, Relation Types, Functional Types
❖ Many2many fields comes under Relation Types, these represent the relations between
objects.
❖ Field stores multiple rows of a relation.

3. ❖ In this form field called Tags defined as Many2many field, So it can store multiple values.

4. ❖ Hover over the field after enabling developer mode, and we will get the details like field
name, object, type of the field, relation etc.

5. ❖ In Python file Define the field by field_name = fields.many2many(). Provide related
model, string etc.

6. ❖ In XML file define the view for the field with many2many_tags widget, it displays multiple
items as tags.

7. For More
Details
Check our company website for related blogs and Odoo
book.
Fields and Parameters in Odoo
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videos in Odoo.
How to Define Many2many Field in Odoo 15

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