[IMP] web: many2many list editable as m2m_tags

Before this commit, there was a discrepancy between
many2many_tags widget and regular many2many list

That is, in tag mode, when someone had read access alone on the comodel
he could modify the members of the m2m relation on the current model
Which couldn't be done in m2m list

After this commit, it is possible in a m2m list to add
records to a relation, even if we don't have CRUD access on the comodel

Task 44074

closes odoo/odoo#40194

Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/addons/web/static/src/js/fields/relational_fields.js b/addons/web/static/src/js/fields/relational_fields.js
index 0bf264aca1d..631bf8e8d11 100644
--- a/addons/web/static/src/js/fields/relational_fields.js
+++ b/addons/web/static/src/js/fields/relational_fields.js
@@ -1213,14 +1213,20 @@ var FieldX2Many = AbstractField.extend({
      * @returns {boolean} true iff the list should contain a 'create' line.
      */
     _hasCreateLine: function () {
-        return !this.isReadonly && this.activeActions.create && (this.isMany2Many || this.canCreate);
+        return !this.isReadonly && (
+            (this.activeActions.create && this.canCreate) ||
+            (this.isMany2Many)
+        );
     },
     /**
      * @private
      * @returns {boolean} true iff the list should add a trash icon on each row.
      */
     _hasTrashIcon: function () {
-        return !this.isReadonly && this.activeActions.delete && (this.isMany2Many || this.canDelete);
+        return !this.isReadonly && (
+            (this.activeActions.delete && this.canDelete) ||
+            (this.isMany2Many)
+        );
     },
     /**
      * Instanciates or updates the adequate renderer.