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Joomla
Hits: 5390
What?
This is a quick note on one reason you may get the above error in a Joomla CMS environment.

copyraw 
Call to a member function mark() on a non-object in /public_html/index.php
  1.  Call to a member function mark() on a non-object in /public_html/index.php 

How?
Not really a solution here because this is indicating that the system can't find the core framework files. Yes the bad news is you have lost your site. The good news is that it's only the core files and component files. Here are some tips when restoring the site to return it to as it was.
Category: Joomla :: Article: 536

Joomla
Hits: 15866
What?
I'm writing a Joomla 2.5.x component for logging time and projects and need a dropdown to have selectable options restricted to the logged-in user. This is specified in the XML file of the custom Joomla component and needs some SQL dependent on some dynamic variables.

Why?
In Joomla, the XML type of "sql" is extremely limited. The component I'm making has to ensure user's can only see their own projects and not everyone's:
copyraw 
SELECT * FROM #__projects ORDER BY name

-- yields all projects irrespective of which user is logged in
  1.  SELECT * FROM #__projects ORDER BY name 
  2.   
  3.  -- yields all projects irrespective of which user is logged in 
What I want:
copyraw 
SELECT * FROM #__projects WHERE user_id=<logged_in_user> ORDER BY name
  1.  SELECT * FROM #__projects WHERE user_id=<logged_in_user> ORDER BY name 

Please Note: This article focuses on a front-end form dropdown. If you would like to see how to do modals for the admin panel, see my article Joomla article modal with clear button for Joomla article selection.

How?
Category: Joomla :: Article: 530

Joomla
Hits: 5268
What?
I'm making a custom component for Joomla CMS 2.5.x which is restricted to registered users only. On installation, and by default, the menu item returns a 500 - Server Error because the parameters haven't been set. I need to go into the Joomla Admin panel, view the Options of the component, and click on "Save"... despite the fact that I don't change anything.

How?

Joomla
Hits: 4600
Applies to:
  • Joomla! CMS 2.5.x

Joomla Filter: Validation OnSave
  • INT Forces the value to be an Integer

  • UINT Forces the value to be an absolute number (-4.2 becomes 4.2)

  • FLOAT Forces the value to be a floating point value

  • BOOL Forces the value to be true or false

  • WORD Strips anything that is not letters (including numbers)

  • ALNUM Forces the value to be alphanumeric (Letters and numbers only. No special characters)

  • CMD Forces the value to be alphanumeric plus the following three special characters _ (underscore) . (dot) - (dash)

  • BASE64 Forces the value to be a base64 encoded the string. Note it does not encode the string, it simply strips characters that may not exist in a base 64 encoded string.

  • STRING Removes HTML

  • HTML Allows basic HTML

  • ARRAY Forces value to be an array

  • PATH Forces value to be a file path

  • USERNAME Forces value to only contain characters allowed in the selection of a Joomla username

  • UNSET Completely remove any input

  • RAW Allow any content

  • URL Forces content to be a URL

  • TEL Forces content to be a properly formatted US phone number

Joomla
Hits: 10620
What?
A quick reminder on how to disable user registration in Joomla! CMS version 1.5.x without using the Joomla! CMS back-end panel.

Why?
Because we're having some corruption issues and simply using the Joomla! administrator panel to navigate to global configuration, does not work!

How?
It isn't in the configuration.php file prior to Joomla! v1.6.x but in the database.
  1. Open the database to the Joomla 1.5.x website
  2. Browse the table "jos_components" (or "#__components" where "#_" is the site table prefix. default is "jos").
  3. Open the row where name="User Manager"
  4. Set the value under params for AllowUserRegistration
    • allowUserRegistration=0 to disable it.
    • allowUserRegistration=1 to enable it.

Not Working?
Are you sure you are using the Joomla user component or a 3rd-party such as Community Builder or K2? If so, you're in trouble as you HAVE to use the joomla admin panel to edit the settings of the 3rd party components.

Joomla
Hits: 9775

- Applies to Joomla 2.5.x +, 3.4.x

What?
So I can't stand the way the default "Search" component in Joomla works. The default is to sort the results by popularity (hits) or by most recently added (depending on your version) which I have never seen in any other system.

I've googled and binged but could not find anything that documents how to bring it into line with other search systems. So here we go, hope this helps you.


Why?
I've created search systems for a plethora of other systems. The aim of this article is to enhance the Joomla search into par with Google and Wikipedia (or near enough).


How?

Joomla
Hits: 8097
What?
This is a quick article on what I change the error page for Joomla websites to. I like a clean error page, for a demo visit http://www.joellipman.com/my_error_page.
  • Applies to Joomla 1.6.x, 1.7.x, 2.5.x

How?
  1. Backup the file \templates\system\error.php
  2. Create a replacement file called error.php including the below code
  3. Change the message "The Page you are looking for..." to what you want.
  4. Change the link "www.joellipman.com" to the "www.yoursitename.com".
  5. [Optional] If you want the image that creates the shadow you can download it here. I put it in the folder \templates\system\images.

Joomla
Hits: 50428
What?
Apologies for posting yet another article on how to access the Joomla Database using the Joomla classes but this is just a quick note for myself as a reference sheet. Plus the official documentation don't have enough examples in my view. Source: http://docs.joomla.org/ for v1.5.x and for v2.5.x

This article applies to Joomla 1.5.x, 2.5.x and 3.x.

Joomla
Hits: 21396
What?
More for others than for myself, but this article is for those who do not have development/test environments of their Joomla website.

I have been doing this for years and still come across clients who have the one version of their website. They experiment on their customer-facing website and in most cases, they are paying for a hosting package which would allow them to have several copies of their website.

Joomla
Hits: 5299
What?
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 to Joomla v1.5.x when the option and id parameters would suffice:
copyraw 
- SEF URL
http://www.joellipman.com/support/documentation/449-module-joes-word-cloud-jwc.html

- Direct Link (irrespective of SEF)
http://www.joellipman.com/?option=com_content&view=article&id=449
  1.  - SEF URL 
  2.  http://www.joellipman.com/support/documentation/449-module-joes-word-cloud-jwc.html 
  3.   
  4.  - Direct Link (irrespective of SEF) 
  5.  http://www.joellipman.com/?option=com_content&view=article&id=449 
Category: Joomla :: Article: 458

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