How to load a page with a System Message

Question

How can I load a page with a system message?

Specifically I have a link and I would like that when a user clicks on the link it opens a specific page with a system message I pass it.

I can see system messages just fine on my site, my template has

<jdoc:include type="message" />

I just don't know what the right code would be to do this. Perhaps the link should actually be a button with an onclick event?

Answer 1

You can inject system messages at any point in the page render cycle like so:

JFactory::getApplication()->enqueueMessage('My glorious message','error');

The jdoc tag basically creates the place host and loads needed files required to inject and display messages. Hope this helps, but depending on exactly where you plan on creating message in code could be relevant. If you are having issues still post the code where you are creating the message.

* Edit 1 *

We can leverage your custom template and Joomla's Output Override's feature to accomplish what you would like. For this example, I'm assuming we will overriding the article component view.

First thing is to create the directory path in your custom template's root folder:

templates/mytemplate/html/com_content/article/

Next would be to copy the core content component default.php file to the new directory, you would find the file for this example at this path:

components/com_content/views/article/tmpl/default.php

Now, at the top of this file, you would add the method to queue up a new system message:

JFactory::getApplication()->enqueueMessage('My glorious message','error');

I pasted three links to Joomla Docs regarding overrides to provide more detailed explanations.

• How to Override Joomla Core
• Understanding Output Overrides
• Layout Overrides in Joomla

Answer 2

Using Brian's answer (thanks very much @Brian Bolli) and this post - https://stackoverflow.com/questions/19323010/execute-php-function-with-onclick - I figured out how to make the link load a page with the message at the top.

The link's code looks like this:

<a href="index.php/animals?multiple=true" title="Add multiple animals to mob"><i class="icon-plus "></i>Add multiple animals</a>

It is passing a variable to the page I want to load in the url called multiple and it is set to true.

In the page template that loads, the code looks like this:

if (isset($_GET['multiple'])) :
    $msg = 'Very helpful message';
    JFactory::getApplication()->enqueueMessage($msg, 'message'); 
endif;

It is checking to see if the variable has been set and then if so, it will display the message I want.