Applies to: What?
This article is a follow-up of my article JComments 2.3.0 with Google ReCaptcha (Joomla 2.5.x) but instead of using ReCaptcha, we're going to use an alternative called PlayThru by AreYouAHuman.Com.

Why?
The kCaptcha used by the jComments extension is easily automated and no longer blocks spam comments.

How?
So I have come up with what I consider a pretty stable solution. I adapted it from various legacy solutions when using Google's ReCaptcha.


Applies to: What?
Posting this as it was rather rewarding to achieve and I hope will be of some use to others in the same boat. This article details how to replace jComments built-in kCaptcha with Google's ReCaptcha. Note that I have an article on how to do this with a ReCaptcha alternative called PlayThru by AreYouAHuman.com

Why?
The kCaptcha used by the jComments extension is easily automated and no longer blocks spam comments.

How?
So the main bulk came from the JoomlaTune website but as it was a forum post that may get moved/deleted, I've copied most of it and put it here with my minor revisions/adjustments to get it actually working.


What?
Somebody said I could pay to get an export list of my Joomla users. I said Joomla is a FREE OpenSource system, why?

Why?
I want to move a client's list of Joomla users to a new system which allows the passwords to be in MD5. All I want is a quick bit of code to get all the users out of a Joomla CMS.

How?
I could just type a query on the database and get the same result, but this script was more fun. Simply create a text file with the following code and upload it to the root of your Joomla website. Access the page from a browser and you should get all your users listed... For security reasons, delete the file after you have used it.

IT IS A SERIOUSLY BAD IDEA TO LEAVE THIS FILE ON YOUR WEBSITE FOR ANYONE TO ACCESS!!! DELETE IT AFTER USE.


Applies to
  • Joomla CMS v2.5.14

What?
This article is a note on how I fixed an issue on a client site. The website had a redirect on the login which would go to a page accessible by "registered" users but only "Super Users" could actually login. "Registered" users would not be able to login, despite their status in the admin panel saying "enabled" and "activated" (not blocked).

If I used a test account, none of the Joomla groups, not even "Administrators" could login. However set the same test account to a "Super User" and they would be able to login. Was the problem authentication? Restricted access to a component? A load of blab on ACL managers?

How?
In our case, the website had recently been migrated from Joomla 1.5.x to 2.5.x. I asked to examine the database and a quick scan in the assets table revealed 3 assets had the parent_id = 0. Only one asset can have that and that is "root".

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

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

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?

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

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.


- 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?

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Joel Lipman
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