fixes #4874 - content view filter: display validation error to user
This commit is to ensure that validation errors when creating a new filter are displayed to the user. The approach used is similar/same as what is done with creating a new content view, in that the validation will be inlined in the form, such that the user may correct the error and resubmit.
Related issues
Bug #4874: content views: Adding new filter with an existing name neither save the form nor raises any error on UI
Added by Brad Buckingham about 10 years ago
fixes #4874 - content view filter: display validation error to user
This commit is to ensure that validation errors when
creating a new filter are displayed to the user. The
approach used is similar/same as what is done with
creating a new content view, in that the validation
will be inlined in the form, such that the user may
correct the error and resubmit.