
Learn about the Read Group method in Odoo, a powerful way to group and aggregate data for creating summaries and reports in various Odoo modules.
The Read Group method in Odoo is a powerful tool used for data aggregation. It enables developers to group records based on specific fields and apply aggregation functions like count, sum, and average. This method is commonly used to display data summaries in list views, kanban views, or custom reports, providing users with valuable insights without manual calculations.
The Read Group method in Odoo allows you to perform grouped queries on your database records. With this method, you can retrieve data with specific filters, group them by fields, and apply various aggregation functions for analytics or reporting purposes. It’s a key method when you need summary information or metrics without creating additional views or models.
The Read Group method can be called on any model using the following syntax:
records = self.env['model_name'].read_group(
domain, # List of filter criteria
fields, # List of fields to retrieve and aggregate
groupby, # List of fields to group by
offset=0, limit=None, orderby=None, lazy=True
)
Parameters:
In this example, we’ll use the Read Group method to get the total sales grouped by salesperson in a custom sales report:
sales_summary = self.env['sale.order'].read_group(
domain=[('state', '=', 'sale')],
fields=['user_id', 'amount_total:sum'],
groupby=['user_id']
)
In this example:
The Read Group method returns a list of dictionaries where each dictionary represents a group with aggregated values. Here’s how the result would look:
[
{'user_id': (3, 'Jane Doe'), 'amount_total': 50000.0, '__count': 10},
{'user_id': (7, 'John Smith'), 'amount_total': 30000.0, '__count': 6}
]
In this output:
The Read Group method is ideal for creating summaries, reports, and insights directly within Odoo without requiring extensive custom views or modules. It’s commonly used in dashboard views, kanban summaries, and list views with grouped data.
In summary, the Read Group method in Odoo is an efficient way to perform data aggregation and grouping, allowing you to quickly retrieve and analyze summary information. By understanding its syntax and application, developers can unlock powerful reporting capabilities within Odoo models.
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