The DcaExtractor class is no longer instantiable via new DcaExtractor().
Use the DcaExtractor::getInstance($table) method instead.
The MooTools "slimbox" plugin has been removed. Use the MooTools "mediabox" or the jQuery "colorbox" plugin instead.
The Message class now supports scopes, which can optionally be passed as
second argument:
// Add an error message to "my-scope"
Message::addError('An error ocurred', 'my-scope');
// Generate all messages in "my-scope"
Message::generate('my-scope');The scope defaults to TL_MODE. The previous arguments of the generate()
method have been removed. If you want to output the messages without the
wrapping element, use Message::generateUnwrapped() instead.
The ondelete_callback of the DC_Table driver now passes $this as last
argument just like in DC_Folder and in any other callback.
The navigation menus and the search module are now using <strong> instead of
<span> to highlight the active menu item or keyword. The newsletter channel
menu is now using <fieldset> and <legend> instead of <label> and <div>.
The book navigation module now uses the CSS class previous instead of prev
for the link to the previous page. The pagination menu now uses the CSS class
active instead of current for the active menu item.
The classes "odd" and "even" are now correctly assigned to the table element.
In Contao 3, new File('tmp.txt') automatically created the file if it did not
yet exist and all write operations such as $file->write() or $file->append()
were carried out directly on the target file.
This behavior could already be changed in Contao 3 by passing true as second
argument; the file was then only created if there was a write operation at all
and any operation was carried out on a temporary file, which was then moved to
its final destination.
In Contao 4, the changed behavior has become the default and the second argument has been dropped.
In Contao 3, the user files in the files/ directory were publicly available
via HTTP by default and it was possible to protect certain subfolders. Now, due
to a technical change, the user files are protected by default and subfolders
have to be published explicitly to be available via HTTP.