This is a workaround in order to ensure the field stays operational
for SiteTree and File records with the new $showSearch=true default.
Previously it was necessary to use setSearchCallback(), otherwise
the SQL query would fail. One limitation to keep this change generic
is that "MenuTitle" won't be used to search, since its SiteTree specific,
while the "Title" and "Name" fields are generally regarded as
model conventions (e.g. they're used in DataObject->getTitle() as well).
See https://github.com/silverstripe/silverstripe-framework/pull/2364
Set search option true on treedropdown fields by default, to provide a
fallback solution when trees fail to render (too many children errors)
Provide better indication/more meaningful styling to search (match
chosen styles for consistency)
Allow DataList::limit() to take a null value to remove the limit.
Added tests for limit(). Note the one failure, currently the ORM doesn't support unlimited values with an offset.
This resulted in an error since the returned class name did not exist.
Note that this only happened when someone subclassed GridFieldDetailForm
and did not subclass GridFieldDetailForm_ItemRequest.
When submitting a Datefield with no value but with a min / max config date, the validate() function attempts to access a function on $this->valueObj (which is a non-object)
Each CSS class passed in to `addExtraClass` or `removeExtraClass` will be set as their own key in the `extraClasses` array
Also make `Form` consistent with `FormField`
Need to specifically whitelist URL-accessible actions now.
Used in "Insert Link" form in HtmlEditorField.
Regression from 1edf45fbedd1431f7b0105403b628deda2b61bdc
See discussion at https://groups.google.com/forum/?fromgroups#!topic/silverstripe-dev/Dodomh9QZjk
Fixes an access issue where all public methods on FormField were allowed,
and not checked for $allowed_actions. Before this patch you could e.g.
call FormField->Value() on the first field by using action_Value.
Removes the following assertion because it only worked due to RequestHandlingTest_AllowedControllerExtension
*not* having $allowed_extensions declared: "Actions on magic methods are only accessible if explicitly allowed on the controller."
Remove all top/bottom margins from buttons and apply to GridFieldButtonRow component. Ensure that all buttons are added to a suitable GridFieldButtonRow in ModelAdmin, SecurityAdmin and Group.
