Hello, its hard to find useful and detailed documentation for Odoo, thats why i have the next question:

How can I add a custom field to the Sales Analysis dropdown filter?

I've created an inhertied report view like:
```<record id="view_order_product_search_inherit" model="ir.ui.view">

And its corresponding model like:
```

```

and the field now appears on the dropdown, but when i click on it i get:
```

psycopg2.ProgrammingError: column sale_report.is_paid does not exist
LINE 2: ...t"."price_subtotal") AS "price_subtotal",coalesce("sale_repo..

```

AFAIK the column should be added when you install the module, but looks like it isn't the case

Also I'm not sure, how should i link the `is_paid` field from the report model to the `is_paid` field from the Sale.Order

thanks