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Installing from directory and installing from a packed extension follow two different installation paths. (two similar but separate pieces of code handle the installation process). To put it with oth …

I have not tested this in later Joomla versions, but at least in 2.5.x it was possible to display a list of files in a folder in the form of the drop-down. The path is hardcoded and rather limited , …

Have a look at the JModelList::populateState() at the backend of any core component, such as com_banners. You can use the getUserStateFromRequest method to set a default value. See 3rd parameter, $de …

While not clearly explained, this actually looks like a script that does not need to run in Joomla, in the sense that is not a typical MVC extension. So you don't need to edit com_content or anything …

I had the same problem as you some time ago. Here are some tips: How To Package Joomla Libraries - a nice and short example written by Joseph LeBlanc. The outcome of my experience: github repositor …

Session and ACL are two separate concepts, even though they are coupled, so it good to understand the distinction between them. I also assimilate the term permissions with ACL. Session Since you are u …

No, you don't need to add HTML to a menu item. Sometimes when Joomla removes stuff for you is because you should not do it like that (even if it was much simpler). What you need is a template overrid …

First of all, check if the user you are using has the necessary permissions. To quote the MySQL manual: You must have the LOCK TABLES privilege, and the SELECT privilege for each object to be loc …

Basically you can do it with a controller and a model. The controller will be called like: index.php?option=com_example&task=getFile&fileName=example.png&format=raw where the controller will call a …

If you place the title / slogan in a module, you can assign a language to the module, so it will only appear with the desired language.

I am not aware of such a feature. Behind the scenes you are actually calling com_config. So it's maybe worth inspecting the code for this component to see if there is such a feature somewhere hidden …

Last time I did some research on this area (March 2013), I found this solution, which is not using JInput: I've inspected how JFactory calls JSession but I haven't found a way to set the expiration w …

Your URL for the partial view / task needs to look like this: index.php?option=com_example&view=partial&format=raw You can also create a new method in the controller, if needed. Make sure that the …

It was actually a bug that it worked (or to be more specific a security issue). The current behaviour is correct. References: Menu item type of External URL can not be saved with javascript:void() …

There is very little background on what else is in the component. You really need to check for database exceptions. See: How to do SQL exception / error handling compatible with 2.5 and 3.x? I see …