All Questions
14 questions
0votes
1answer
217views
Which types of objects that are instantiated inside controller's methods should be injected into the controller instead?
Consider code below MyController //MyAction //MyHandler { public function processRequest() { // ... $myObject = new MyObjectClass(); $myObject->methodCall(); ...
- 8,257
2votes
2answers
932views
How to use Dependency-injection Containers correctly when they hide dependencies from outer classes?
From Zend Docs there is this example of how to use Zend\Di, which is a dependency injection container of Zend Framework: // inside a bootstrap somewhere $di = new Zend\Di\Di(); // inside each ...
- 8,257
3votes
0answers
898views
Dependency injection - Nested objects
# Introduction I am working on a CMS application in PHP with about 200 classes. The CMS, in general, does the same thing every CMS does: generate sites. I am learning a lot about OOP and design ...
- 253
5votes
2answers
2kviews
PHP OOP dependency injection - when is it o.k. to use the "new" statement
I was told to avoid "new" statements in classes or functions but rather create the objects from classes in the root of the program (maybe with the use of a DI-container) and then inject the objects ...
- 51
4votes
1answer
450views
Do I have to stop using Dependency Injection to keep object debug printouts small?
Say I have a large object - think EntityManager of an ORM such as Doctrine, or a custom DAO object, or what have you. Object, output of which is required to be used inside a class, but the object ...
- 8,257
6votes
1answer
4kviews
PHP: Injecting the same database connection into multiple objects
Suppose that there are two classes that define objects of vastly different function such that in the datastore, the information they require is divided into two separate databases. For example, the ...
- 517
3votes
1answer
1kviews
Hidden dependencies - why not?
Hidden dependencies: function __construct($dep_registry){ $this->db = $dep_registry->get('db'); $this->request = $dep_registry->get('request'); ... } Not so hidden: function ...
- 131
-1votes
1answer
512views
Multiple method calls in the constructor and dependency injection
I was asked to refactor some almost ureadable spaghetti code into object-oriented architecture. I have some doubts regarding a class that I designed. Here is the class' skeleton: require_once 'inc/...
- 141
1vote
0answers
74views
Is this pattern of optional dependency injection sound? [duplicate]
A lot of the time when working on legacy code bases, I find it hard to move manually created dependencies to the constructor parameters, because of a variety of reasons. Sometimes it's because the ...
- 111
3votes
1answer
116views
Creating variables in methods/functions
In how far do we create variables in our methods or functions? Do we only create one when we're using the result of the variable more then one time like this? function someFunction(SomeClass $...
- 175
2votes
1answer
469views
How to properly handle conditional dependencies in a factory?
Let's say you have a string $action run-time, that specifies which type of $object needs to be created: $dbobject, $memcacheobject, $fileobject, $xmlobject, etc. Assume also, that creation of an ...
- 21
1vote
1answer
668views
Unused dependencies and constructor injection
I have a class that has 3 dependencies. WritabbleDBConnection, ReadOnlyDBConnection and a QueryFilter utility object. I want to do constructor Injection so my class would look something like this. ...
2votes
2answers
451views
Is there a better way to design these classes?
I have two business classes: TimesheetDay and TimeSlot. One TimesheetDay can have one or more TimeSlots. The TimesheetDay and TimeSlot classes will be dependent on an object that implements a ...
8votes
3answers
2kviews
Keeping an MVC model loosely coupled from the DB?
I like to keep my code testable and have decided to go with the Dependency-Injection strategy for my current MVC framework, which definitely has proven to be a great way to ensure loosely coupled code,...
- 305
