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Joomla Tutorials & Guides

Practical Joomla tutorials, troubleshooting notes and implementation guides from real projects.

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Link to a Joomla article from within another article
Joomla

Link to a Joomla article from within another article

Quick article here as googling/binging for how to refer to Joomla articles after versions 1.5.x wasn't obvious. This article is to demonstrate how to write the webaddress for a Joomla article even when you have Search-engine-friendly website addresses enabled. How? Basically you have to include &view=article as opposed...

Read note 17,611 hits
Warning call_user_func: First argument is expected to be a valid callback
Joomla

Warning call_user_func: First argument is expected to be a valid callback

If you get something like the following error: Warning: call_user_func() [function.call-user-func]: First argument is expected to be a valid callback in /home/.../templates/rt_affinity/rt_sectionrows.php on line 311 How? Copy & backup the file /public_html/.../templates/rt_affinity/rt_sectionrows.php Find the following...

Read note 40,700 hits
Joomla article modal with clear button
Joomla

Joomla article modal with clear button

This is an article to describe how to add an article modal button in the Joomla Admin Panel (at time of print version 2.5.6) of your component including the all important clear button. What I found was that no one posted this solution which I found is compatible with almost any site and with all my components without h...

Read note 49,715 hits
Basic Joomla 2.5 Mootools Form
Joomla

Basic Joomla 2.5 Mootools Form

This is an article to demo the crudest form which uses Joomla's version 2.5 core mootools (uncompressed?). This is intended for absolute novices (like me) who just want to see an example of an AJAX form within Joomla 1.6.x - 2.5.x in it's most basic state. At time of print, I am using this with Joomla 2.5.6.

Read note 65,832 hits
Connect to Joomla database in standalone script
Joomla

Connect to Joomla database in standalone script

APPLIES TO Joomla 2.5.x Why? I'm building a Joomla component which is to be compatible with Joomla versions 1.6.x to 2.5.x. Because I use dynamic scripts running in the background (mootools), some of these need to connect to the database but as they sit outside of the MVC structure, we need them to use the existing con...

Read note 60,975 hits
Joomla field types clear my html
Joomla

Joomla field types clear my html

Trying to make a component and can't remember how to store HTML code when the save command is clicked (ie. submitted from a PHP form). This is for the Opensource Content Management System (CMS - phew what a mouthful) Joomla! version 1.6.x to 2.5.x; no wonder customers have difficulty following. How? So it's the field o...

Read note 20,654 hits
Migrate JComments from Joomla 1.5.x to Joomla 2.5.x
Joomla

Migrate JComments from Joomla 1.5.x to Joomla 2.5.x

Thought I'd add the migration script I've been using to test my JComments migration from my Joomla CMS site version 1.5.20 to Joomla CMS site version 2.5.6. DISCLAIMER I do not work for either Joomla or JoomlaTune (Jcomments) This script is provided as is without warranty If you do not understand what this script is do...

Read note 292,365 hits
Could not instantiate mail function
Joomla

Could not instantiate mail function

Quick Fix Check that this error isn't resolved by just changing the Mailer (Joomla > Global Configuration > Mailer settings). Alternate between PHPmail and sendmail just to check this isn't the problem. If the problem is still there then check the below: Tried both PHPmail and sendmail So if this happens irrespective o...

Read note 47,159 hits

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