Sometimes has-one UploadFields can get confused about whether or not there is an existing file that needs deleting. This setting lets you make a more robust has-one UploadField, where any existing file will be replaced. It more closely mimics simple single-file upload fields.
This is the companion setting to canUpload, letting you control whether existing files from the asset store can be referenced. It's particularly useful when using UploadField on the front-end.
Although editing meta-data or deleting permanently would require File editing/deleting permissions, merely linking to a record does not. This change is important for allowing front-end use of UploadField; or, more importantly, use of UploadFile by people without CMS rights.
The field carries the configuration, and some non-upload functionality
like "attach files" still relies on the fileupload jQuery plugin
being initialized.
Conflicts:
templates/UploadField.ss
Needed for introspection for many_many relationships
without knowing the name of the relationship,
meaning we can't use DataObject->many_many_extraFields().
Otherwise conditional logic will only succeed
when run through "sake dev/tests", not when
run through phpunit directly (which is the recommended way now)
The new config setter restores the 2.4 behaviour of including <input type="hidden"> with a field. Although as a default, this option has security flaws; it is useful in a few circumstances and, if nothing else, is handy to make upgrading sites easier.
Same behaviour as with 3.0 bootstrap.php and the
2.4 cli-script.php (which it is based on).
This allows to use GET switches which are evaluated in _config.php
files, e.g. db=<db-alias> settings for running tests
with various DBs without changing the underlying PHP config.
This hook is useful so that you can add additional fields / actions in a gridfield form that are not available in other settings (e.g. additional actions: previous / next / save and publish / unpublish / etc
The accordion widget was previously being passed true and false, where as it either expects true or the integer of the panel to show.
This fix sets it as either false or 0.
This causes a 'Fatal error: Call to a member function hasMethod() on a non-object'.
This can happen when displaying a field in a gridfield on a belongs_to relationship.
In certain cases, the button may not yet be initialized or may no longer have button properties at the time of removal from the DOM. Without this check, an uncaught exception is thrown.
Function unset() preserves numeric keys and method removeRequiredField() will give a PHP notice about nonexistent array key and loop won't iterate throughout all elements in array on second method call (and all subsequent).
So it's better to use foreach loop and array_splice() function (it doesn't preserve numeric keys).
+ has a special meaning in the URLs so overall it's a good idea to
strip them out. Otherwise they would need to appear in their ugly url
encoded form "%2B".
Refer: http://open.silverstripe.org/ticket/7929
