As far as web development goes, Zend Framework is one of the most popular frameworks out there. It’s an MVC design that is used by many popular websites. It allows easy access to a vast amount of information, such as getting current URL attributes.
Zend Framework makes use of several different design patterns. One of them is the singleton design pattern. This design can be simplified by thinking of it as a global variable: it can be accessed and changed at any time. Normally this practice is frowned upon because it leads to poor code, but the Zend Framework front controller makes use of this to provide HTTP request information to the developer at any point in the framework stack. It’s one of the few times this pattern is considered acceptable.
The view of a Zend Framework application is where all template code goes. Due to its nature, it’s not acceptable to put logic code here. Because we aren’t able to use the HTTP request singleton, we instead have access to a view helper. This helper is name the Server Url helper, and it is used to return the URL or URI. Further modification or need for information should be done in the controller and then passed to the view for access.
When in the controller a developer may access methods of the HTTP request object directly. Every controller in Zend will give access to methods for finding parameters, domains, paths, and schemes of URI information. This is where user interface elements such as bread crumbs may be easily created and passed to the view while still following the MVC principle. It may take more lines of code than the Server Url view helper, but controllers give developers access to more options.
When working in library files you do not have direct access to the Zend Controller Action class. Thus, you can’t get direct access to the HTTP request object. Instead you can create an instance of the front controller and access the information just like you would in the controller as previously discussed. This is one of the few times you can access information in this style: singleton patterns are used few and far between.
The base URL helper is another option for those who don’t want to build the root path every time they need to build a link. The base URL helper is set in the application configuration file or in the bootstrap. There are several implementations of this functionality, so use what best works for your application. This is as close to a singleton object as you should get to making your own global helper file.
Final Thoughts
Zend Framework gives easy access to URI information, just like PHP does. The difference is that Zend Framework makes the process easier and does so according to MVC design. The best part is that you can depend on the methods to return what you need – you won’t have to build your own methods and functions to get URL variables.
This Zend Framework tutorial was written by Chris Channing. See more of his development and thoughts on zend get current url parameters.
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