Adds basic support to filter possible m2x values based on another
record. This is necessary for the website_appointment snippet
introduced within this bundle (see related ENT PR).
An important need implemented here is to not store a list of valid IDs
in the DOM but fetch them based on data stored by a different widget.
Use case covered:
Model A has a Many2Many relationship with Model B via a `model_b_ids`
field.
A first widget (Wa) on a snippet's options allows to select a record of
Model A. A second widget (Wb) allows to select records of Model B.
```xml
<!--Widget A-->
<we-many2many data-model="model.a" data-m2o-field="name"
data-fakem2m="true".../>
<!--Widget B-->
<we-many2many data-model="model.a" data-m2o-field="model_b_ids"
data-filter-in="true" .../>
```
Before this commit, the second widget would only be able to show
all records of Model B linked to any Model A record and matching a
static domain provided as attribute, which is still supported.
This commit allows, after having selected `record_a` in the first
widget, to only populate the second widget with the records of
Model B that are in `record_a.model_b_ids`.
Implementing this is done by
* Adding `data-filter-in` to Wb's xml attributes (as above)
* Calling `Wb.setFilterInDomainIds()` when another record is selected
in Wa.
Task-2574175
odoo/odoo#90748
See odoo/enterprise#23750
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>
Florian Charlier
be9f264011