Wagtail Hide/Show menu item by user permissions

Question

How to hide-show menu in wagtail CMS: Here is my code on register_admin_menu_item hook inside blog/wagtail_hooks.py

    from wagtail.core import hooks
    from wagtail.admin.menu import MenuItem
    @hooks.register('register_admin_menu_item')
    def register_custom_admin_menu_item():
        return MenuItem(_('Site Admin'), reverse('admin_menu'), classnames='icon icon-folder-inverse',
         order=20000)

Answer 1

For imposing the access on the menu, we can create the custom MenuItem Class and override the is_shown method as below:

        class CustomAdminMenuItem(MenuItem):
        def is_shown(self, request):
            return request.user.is_staff

Now use this CustomAdminMenuItem instead of MenuItem like:

    from wagtail.core import hooks
    from wagtail.admin.menu import MenuItem
    @hooks.register('register_admin_menu_item')
    def register_custom_admin_menu_item():
        return CustomAdminMenuItem(_('Site Admin'), reverse('admin_menu'), classnames='icon icon-folder-inverse',
         order=20000)

You can implement custom permission check also using has_perm inside is_shown like:

    class CustomMenuItem(MenuItem):
        def is_shown(self, request):
            return (
                request.user.has_perm('wagtailsearchpromotions.add_searchpromotion') or
                request.user.has_perm('wagtailsearchpromotions.change_searchpromotion') or
                request.user.has_perm('wagtailsearchpromotions.delete_searchpromotion')
            )

For more details visit the source code here and doc here.