Editing Module:Article history/doc (section)

=== Message ===

The Message mixin contains common message-related methods which are available in all classes apart from the Category class. These methods are:

* <code>Message:message(key, ...)</code> - fetches a message with the key <var>key</var> from the config's msg table, and substitutes parameters $1, $2 etc. with the subsequent values it is passed.
* <code>Message:raiseError(msg, help)</code> - formats <var>msg</var> and uses it to raise an error. <var>help</var> is an optional page that will provide help for the error that the user encountered. This is intended to be caught with ArticleHistory:try, and is for errors after which further processing in that object becomes impossible.
* <code>Message:addWarning(msg, help)</code> - formats <var>msg</var> and uses it to add a warning. <var>help</var> is an optional page that will provide help for the error that the user encountered. This is for errors that should be fixed, but that do not prevent the module from outputting something useful for that object.
* <code>Message:getWarnings()</code> - returns an array of all warnings added for the object.