This was great and amazingly well explained. I previously didn't understood so much the idea behind dependency injection, but with this video is much more clear now. Thanks again Dave!
At Uni I chose to do a Developmental project and it was building a web service for an MSc course. I enrolled in Dave's API course on Udemy. The webs service was being consumed by Embassy websites. I tried several courses on Udemy and other sites only Dave's API course was helpful. It was also the shortest yet it covered everything I needed including detailed JWT Authentication. Dave's understanding of PHP is amazing, I guess he now dreams in PHP.
HI, the simplest and best explanation. Thanks. Now is missing a video about php as template system like plates, how organize using section / blocks or template Inheritance and base layouts. Please update your PHP unit course, which i already bought, to v10. And if possible, do first a video (overview) about Pest lib for testing and later on a full course on udemy. Thanks.
Thank you Dave. That was magnificent. I wish that your words during your presentation are captured as comments for each line. May I ask? The way you structured your psr-4 autoload setting: "": "sec/", will it still work if your Classes had namespaces?
@@dave-hollingworth sire 🙏 I'm having issues on php undefined array key in php _post when I want to submit a form please help me I have tried isset($_POST['userName']); also use myqli_real_escape_string but still showing undefined Array key on line......... When I submit a form
Hello Dave, I am still getting the Error: Uncaught ReflectionException: Class "string" does not exist. But then I realizing that my DAO class has a parameter with type PDO instead of the Database object, after I change the parameter type to database class object, it worked. But in cases like this where we just need to pass a method (returns the connection object) in the constructor is there a way to handle this with DI container? or is that even a good practice?
Hi, I wanted to ask a question, how do I resolve classes through DI that need runtime parameters? For example, if I have a UserService that in it's constructor will accept a User Model (say a User in Laravel), how do I inject this UserService as a dependency? I was thinking maybe I can have a setter injection instead of a constructor so that wherever I inject the class as a dependency itself, I call it's setter method to set the User for that UserService and then go through the logic I need to go through, is this a smart idea?
@@dave-hollingworth In the case where the parameters are runtime only, would you say it's better to use a setter injection (userService.setUser($user)) instead of creating a new userService and then passing the $user in its constructor? (new UserService $userService ($user))
In most cases it doesn't really make much difference, it's down to personal preference - although if you need to get a user object at runtime (e.g. as the result of an action like logging in) then it might be simpler to use setter injection.
