"If ..., then ..." is one of the most commonly used phrases in the world of software development and, I suppose, in life:
In this blog, we are going to introduce to you to the Context module, which puts the power of "If ..., then ..." into your hands.
Here's the example we're going to use to introduce Context:
Imagine you want this block to show in the first sidebar region on the home page but in the footer area on all other pages.
However, your block is generated by a module. A good example is the "Who's online" block. Our problem is that it's not easy to duplicate a block that is created by a module.
Here's how we'd use Context to solve this problem ...
There are two modules required for Context to work.
Once the modules are on your server, you will be able to see them in your module list.
In our scenario, we want the "Who's online" block to appear in a sidebar on the home page but in the footer on all other pages. To accomplish this, we will create a context for the block on the home page.
Note: this path condition is the same as the default Pages visibility setting on the block configuration.
Notice that the block appears first, above the Search and Navigation blocks. This is important. In this scenarion, if you want the Search block to appear above the "Who's online" block, you will need to add the Search block to the homepage context and position it above the "Who's online" block ... just as you would do in the default block configuration interface. Then you will want to remove the Search block from the default block configuration.
We could create another context that displays the "Who's online" block in the footer for all other pages or we can use the default block system. For demonstration purposes, let's use the default block system.
We have another Context tutorial showing how to place a block on different content types.
As you can imagine, using the Context module will require some exploration on your part. Don't be afraid to play with the conditions and reactions to see what you can do and if the options are what you need.
Also, it is important to plan your block layout if you plan on using Context to manage your blocks in addition to or instead of the default block system. Why? Well ... as you saw, the "Who's online" block appeared above the Search block and there wasn't a way to change that except to add the Search to the homepage context OR switch and use the Context to create the footer blocks instead of the sidebar.
Another reason is, if you plan to use Context to manage your blocks, please note there isn't a way to order your contexts (like we can order our blocks) and if you have more than one context feeding one region on one page, you won't have an easy way to reorder the groups of blocks managed by the contexts.
Have fun with this module. It is very powerful and once you get the hang of it.
Drupal Developer having 9+ year experience, implementation and having strong knowledge of technical specifications, workflow development. Ability to perform effectively and efficiently in team and individually. Always enthusiastic and interseted to study new technologies
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