[IMP] web: add control + create tags to customize "add a line"

The default "add a line" button creates a new line with the default values from the model. Sometimes we want to create a new line with different default values (or more generally a customized context), which is possible with this commit. Moreover it is possible to create multiple buttons for multiple default values/contexts.

This works both for in-line creation ("editable=") and dialog creation.

The new tags are:

<control> defines custom controls for the current view.

Does not support any attribute, but can have children:

<create> adds a button to create a new element on the current list.

This makes sense when the parent tree view is inside a One2many field.

If any create is defined, it will overwrite the default "add a line" button.

For more information and example, have a look at the Views documentation.

Technically, the commit will:
- parse the new XML tags (+ add appropriate validation)
- display the buttons based on the XML
- on button click/keyboard: pull up the additional context information from the button event up to the default_get
- add unit tests
- add documentation

PR #25209

1 files changed, 2 insertions, 2 deletions

diff --git a/odoo/tools/view_validation.py b/odoo/tools/view_validation.py
index 4932b026310..014b7f107be 100644
--- a/odoo/tools/view_validation.py
+++ b/odoo/tools/view_validation.py
@@ -77,9 +77,9 @@ def valid_field_in_graph(arch):
 
 @validate('tree')
 def valid_field_in_tree(arch):
-    """ Children of ``tree`` view must be ``field`` or ``button``."""
+    """ Children of ``tree`` view must be ``field`` or ``button`` or ``control``."""
     return all(
-        child.tag in ('field', 'button')
+        child.tag in ('field', 'button', 'control')
         for child in arch.xpath('/tree/*')
     )