If you are new to Joomla! development, then it is probably easiest to start with an existing view, and try modifying it to get what you want. To do this, you should make a copy of the existing view in the html directory of your template, and then modify the copy.
The directory structure you need is:
For example, if you want to change the way that the 'Article' view displays a com_content article, then you should copy the file at
PATH_TO_JOOMLA/components/com_content/views/article/tmpl/default.php to TEMPLATE_NAME/html/com_content/article/default.php
(note the slight difference in directory structure)
Similarly, if you want to change how the mod_login Module is displayed, then you should copy
PATH_TO_JOOMLA/modules/mod_login/tmpl/default.php to TEMPLATE_NAME/html/mod_login/default.php
Joomla! comes pre-packaged with a frontend template called Beez. Beez utilizes template overrides to produce a table-less layout for faster, smoother, and semantically correct markup. To see how it's done, locate your Joomla! installation's template directory, and you'll notice the Beez template. Inside the Beez template directory, you'll find a directory named html
the entire directory structure is as follows:
If you want to try modifying the overrides used in Beez, you could simply copy and paste the Beez html directory into your own template's main directory. However you choose to make your override files, you will need to ensure that they are correctly installed with your template. To do this, you should add the following code to your template's templateDetails.xml file (in between the <files> and </files> tags):
The above code in essence lets the Joomla! package installer know that there are files to extract, and that they are part of the template as a whole.
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