Jeet On Web

All Browsers have some caching mechanism, they cache most of the css, javascript and images those are loaded frequently from an website. However, this might be a headache for a developer when they made changes to some of the JS, CSS but the changes are not reflected in website, unless you clear the local cache. The global standard is to change the file path name or add a query parameter to your asset as such : 1 example.com / assets / css / common.css ? v = 234 So to implement this Symfony framework supplies a straight forward solution in its asset configuration. It's called assset version . Just add below configuration to your config.yml and rest will be taken care by Symfony framework when it loads an asset to the template. 1 2 3 4 # config.yml framework: assets: version : 'v1451' The above settings is not limited to twog templates, If your application serves APIs and your response is in JSON or XML format, the above settings will als...

Often while we clone an entity, we find the property of new cloned entity gets changed based on changes to the main entity. Mostly when the change occurs on $form->handleRequest($request); Below magic function restricts the properties to keep their value unchanged by cloning deeper state of relationships. Code Example : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 <?php /** * clone */ public function __clone () { if ( $this -> id ) { // Remove orm reference to DB. $this -> id = null ; // Collect books to clone so that any further change to books in // main entity won't affect the cloned entity. $this -> books = clone $this -> books ; } } ?>

ArrayCollection object has so many useful in-build methods, that makes ArrayCollection superior comparable to normal PHP array. This post is about how to filter and sort an ArrayCollection so output of elements can be in certain order or filtered. Filter To filter we can use ArrayColleciton in-build filter method , which takes a predicate and returns all the elements satisfied by the predicate provided, keeping the order of the elements intact. A code example would be nice. Code Example : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 <?php /** * @var \Doctrine\Common\Collections\Collection */ $locations ; // ArrayCollection() variable that has $location object in its element. // To filter active locations. $activeLocations = $locations -> filter ( function ( $location ) { return $location -> getStatus (); // filter based on status. }); // Now $activeLocations holds all locaitons from $locations those have an active locaiton. ?> Sort Arra...

Creating relationships inside a database is a very common thing for an web developer. Respecting to to RDBMS concept, we can create any sort of relationship inside a database. Things get changed when we have to use Doctrine for the mapping with database. Initially this made pretty much confused to me. Only after live working examples and few docs, I could able to get rid of it somehow. This post is about Doctrine mapping and difference between Unidirectional and Bidirectional relationship. What is Doctrine ? Doctrine is a set of PHP libraries that provides persistence services that is helpful managing PHP objects with Database layer. That means it creates a bridge between PHP light weight mapped objects and Database Objects. So Doctrine provides how to map PHP objects internally by its ORM (Object Relational Mapper) and its DB layer (DAL : Database Abstraction Layer) provides a unique object based query language(DQL : Doctrine Query Language) to write db queries independent of data...