Docs for new hooks

docs/reference/hooks.rst

@@ -278,12 +278,12 @@ Hooks for customising the editing interface for pages and snippets.
   Add additional CSS files or snippets to all admin pages.
 
   .. code-block:: python
-  
+
     from django.utils.html import format_html
     from django.contrib.staticfiles.templatetags.staticfiles import static
-  
+
     from wagtail.wagtailcore import hooks
-  
+
     @hooks.register('insert_global_admin_css')
     def global_admin_css():
         return format_html('<link rel="stylesheet" href="{}">', static('my/wagtail/theme.css'))
@@ -364,6 +364,34 @@ Hooks for customising the way users are directed through the process of creating
         return HttpResponse("Congrats on making content!", content_type="text/plain")
 
 
+.. _before_create_page:
+
+``before_create_page``
+~~~~~~~~~~~~~~~~~~~~~
+
+  Called at the beginning of the "create page" view passing in the request, the parent page and page model class.
+
+  The function does not have to return anything, but if an object with a ``status_code`` property is returned, Wagtail will use it as a response object and skip the rest of the view.
+
+  Unlike, ``after_create_page``, this is run both for both ``GET`` and ``POST`` requests.
+
+  This can be used to completely override the editor on a per-view basis:
+
+  .. code-block:: python
+
+    from django.http import HttpResponse
+
+    from wagtail.wagtailcore import hooks
+
+    from .models import AwesomePage
+    from .admin_views import edit_awesome_page
+
+    @hooks.register('before_create_page')
+    def before_create_page(request, parent_page, page_class):
+        # Use a custom create view for the AwesomePage model
+        if page_class == AwesomePage:
+            return create_awesome_page(request, parent_page)
+
 .. _after_delete_page:
 
 ``after_delete_page``
@@ -372,6 +400,16 @@ Hooks for customising the way users are directed through the process of creating
   Do something after a ``Page`` object is deleted. Uses the same behavior as ``after_create_page``.
 
 
+.. _before_delete_page:
+
+``before_delete_page``
+~~~~~~~~~~~~~~~~~~~~~
+
+  Called at the beginning of the "delete page" view passing in the request and the page object.
+
+  Uses the same behavior as ``before_create_page``.
+
+
 .. _after_edit_page:
 
 ``after_edit_page``
@@ -380,6 +418,16 @@ Hooks for customising the way users are directed through the process of creating
   Do something with a ``Page`` object after it has been updated. Uses the same behavior as ``after_create_page``.
 
 
+.. _before_edit_page:
+
+``before_edit_page``
+~~~~~~~~~~~~~~~~~~~~~
+
+  Called at the beginning of the "edit page" view passing in the request and the page object.
+
+  Uses the same behavior as ``before_create_page``.
+
+
 .. _construct_wagtail_userbar:
 
 ``construct_wagtail_userbar``