Introduce new LeftAndMain_HTTPResponse class for this purpose,
to mark a response as finished regardless of HTTP status.
This is required for ajax responses which do redirects on app layer
rather than HTTP (to avoid double processing).
Specifically required to decorate LeftAndMain->init()
in the 'translatable' module (TranslatableCMSMainExtension),
which marks the response as finished through its redirect,
avoiding further processing after init().
Implemented independently of URL state to ensure that
state is retained on every user interaction, rather than
having to add it to each URL specifically.
Same reasons for not saving it as HTML5 history metadata,
as that's only inspected on history events, not
normal CMS navigation.
When one or more fragments are requested that are not in
the current DOM, we need to force loading the outermost
fragment instead (currently hardcoded to "Content").
This mainly prevents history back navigation from breaking,
e.g. admin/pages -> admin/pages/list ->
admin/pages/list/?ParentID=99 -> admin/pages/edit/show/5 -> (back)
Was using text/json, which Form->httpSubmission() interprets
(correctly) to returning JSON validation data.
This trips up the interface, which expects HTML with
the validation errors directly in the markup.
Broke when CMS URL already had query params,
such as ?locale=en_US with the Translatable module enabled.
With this patch it doesn't double-concat ?locale....
Still doubles query params, but that's acceptable
until we find a more solid URL manipulation lib for JS.
As ModelAdmin puts classes directly into links, a namespaced class
has its \s turned into /s, breaking the links. This escapes them by
converting each \ to a -, then converting them back when loading.
Nasty issue where nested requests to sub-controllers within LeftAndMain->EditForm() would fail because of
LeftAndMain->currentPageID() being taken from the URL, even though it was a field action name.
Example: POST /admin/pages/edit/EditForm/field/MyGridField/item/1/ItemEditForm/field/MyUploadField/upload
The current ID would be detected as "field" in this case.
Bug was previously fixed for AssetAdmin.
7427 was mostly fixed by Ingos previous patch. But two batch actions, delete from draft site and delete from published site werent returning
status messages. Abstracted out the status preperation code that the batch actions that were returning status messages were using, and
used that to add status messages to the problem two
When adding media via the HtmlEditorField dialog, the value of the URL field wasnt being validated. Youd get different errors depending on if the field was empty
or if it had text, but it didnt look like an absolute URL to HtmlEditorField#viewfile.
This adds some javascript validation to make the text field look like a URL field
