Only kanban, tree and form implements onchanges.
Therefore, on calendar, graph, pivot, ..., putting `on_change="1"`
is useless and is a waste of resources and KB.
e.g. CRM lead pivot view
Before:
```xml
<pivot string="Pipeline Analysis" sample="1">
<field name="create_date" interval="month" type="row"/>
<field name="stage_id" type="col" on_change="1"/>
<field name="expected_revenue" type="measure"/>
<field name="color" modifiers="{"invisible": true}"/>
<field name="automated_probability" modifiers="{"invisible": true}"/>
<field name="message_bounce" modifiers="{"invisible": true}"/>
<field name="probability" on_change="1" modifiers="{"invisible": true}"/>
</pivot>
```
After:
```xml
<pivot string="Pipeline Analysis" sample="1">
<field name="create_date" interval="month" type="row"/>
<field name="stage_id" type="col"/>
<field name="expected_revenue" type="measure"/>
<field name="color" modifiers="{"invisible": true}"/>
<field name="automated_probability" modifiers="{"invisible": true}"/>
<field name="message_bounce" modifiers="{"invisible": true}"/>
<field name="probability" modifiers="{"invisible": true}"/>
</pivot>
```
I would have like something smarter, like using the `editable` concept
for instance, but it's not that easy.
e.g. kanban is not considered as editable, while it does support
onchanges when grouping record by a field and drag and dropping
record from one column to another.
However, if we change the kanban view to make it editable,
the view validation will start validating the fields domain:
https://github.com/odoo/odoo/blob/45d4ac14f65c53dcde56592715d50169bde116ad/odoo/addons/base/models/ir_ui_view.py#L1439-L1442
causing issues:
- If a field used in the domain is not in the view, it will need to be
added in the view,
- while it will not be used, as you cannot do a search in related fields
in kanban views anyway.
e.g.
```
odoo.tools.convert.ParseError: while parsing /data/build/odoo/addons/analytic/views/analytic_line_views.xml:120
Error while validating view near:
<kanban class="o_kanban_mobile" __validate__="1">
<field name="date"/>
<field name="name"/>
Field 'company_id' used in domain of field 'account_id' ([('company_id', 'in', [company_id, False])]) must be present in view but is missing.
```
In addition, the kanban doesn't need the readonly and required
attributes on the field nodes, as other editable views (tree and forms)
do.
In addition, the tree list is currently considered as "editable" only
when it has `editable="bottom" or `editable="top"`, while
a tree without this editable attribute can still trigger onchange,
for instance when using `widget="handle"` or `widget="boolean_toggle"`.
We should therefore making the tree list editable whatever the case,
leading to the same issues than listed for the kanban above,
or make an exception for field in non-editable tree views using a
widget..
So, as the smarter way seems difficult and risky, for a limited gain
I choose the easy way by separating the concept "editable" and
"onchange-able" and to not set `on_change="1"` on views not considered
as "onchange-able".
closesodoo/odoo#102788
X-original-commit: aeb65ee536b1611c1cb829c91906f327f8e331c7
Signed-off-by: Denis Ledoux (dle) <dle@odoo.com>
Denis Ledoux
94e05f9eed