Build a PHP MVC Application: Controllers (Part 5/9)

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[kratom]

well very nice tutorial, nice to follow. but if i am in my root /public/ i get of course a "offset on value of type null" Error because nothing is parsed at the initial visit of my url. i guess we have to check if(isset($url[0]) as well ;)

[MovieHeretic]

Really enjoying the series of tutorials thus far, hopefully we get calling a form and seeing when the user hits submit where it goes and what happens etc.

[luke]

if you are getting an error
"Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($function) must be a valid callback, non-static method Foo::bar() cannot be called statically"
downgrade from PHP 8 to PHP 7

[ChapmanWorldOnTube]

Novice with a tip: Rename the Controller class to 'CustomController' and rename the file that it's in to 'customcontroller' accordingly. Each time you extend 'CustomController' name the new class 'Controller', but put it in a file named accordingly.. so in home.php you'd have a Controller class, and in Contact.php you'd also have a 'Controller' class. Adjust the code to always instance 'Controller'. Because you're only ever including one controller class, there is no name-space clash, and you can avoid case-sensitivity issues in your url.

[RainnusShin]

might be easier to extract what you need off the url array using array_shift(). this way you pick off what you need from the beginning and leave the rest as params.

[rommelrodriguez]

Nice video series, explains in a simple and clear way the core techniques.

[mdhasanuzzaman]

Really nice tutorials for Understanding MVC

[mastermattie]

Hi there, Thanks for the tutorial. It's good to understand.
But at this step i'm running into an issue:

FYI: I'm running PHP 7.0.2 x64 NTS on IIS 8 (Windows Server 2012 R2) with URL Rewrite enabled and was able to get te rewrite conditions work from web.config.
Running the var_dump, echo and print_r tests confirms the controller, method and params are parsed correctly from the url.

So here's my issue:
When I try to make an object instance from $this->controller with the line $this->controller = new $this->controller; i'll get the warning "Creating default object from empty value" and $this->controller stays string "home". When I call the function it returns bool(true), so, the class is recognized.

Is this a PHP 7.0 compatibility problem that might conflict with creating nameless classes?

[wolfgangleon]

Thank you for this tutorial first of all. I got it all working and I'm building my own modules but I'm facing one little important problem. I was wondering how can I pass variables from a form within one of my controllers but to a different method. Ex: I have a controller that takes care of the home class and this class has two methods, Refrigerator and Oven. How can I pass variables using the form within the Refrigerator method to the Oven method?? Currently I have this method "kitchen/refrigerator" with a form submitting to action="kitchen/oven" method="POST" but the variables aren't passing I'm guessing cause there's already a GET method involved within the controller routing index?url=controller?

[manuelsalas]

When I call a method (for example .../public/home/index) I cant see the css, but when I do it like this (.../public/home) It shows the styles. I dont knw why :/

[vazquezbandaemiliano]

if anyone had this problem in the if(file_exist()): "Notice: Trying to access array offset on value of type null"
the solution it's implement isset() function before the if.
if(isset($url[0])){
. $url[0] . ".php")){
$this->controller = $url[0];
unset($url[0]);
}
}

[Barrosy]

Doesn't the file exists statement need to be like: . $url[0] . '.php')) not need to be: . $url[0] . 'Controller.php')) instead, as controller names always should end on 'controller' when following MVC naming conventions?

[sweetmelon]

3:16 why are you doing ../app/controllers instead of ../controllers? since you're in the core folder, you only need to go 1 layer up (you'll be in the app folder) and then go to the controller folder

[feldinho]

A "ControllerFactory" would fit this example nicely :)

[remcodebaas]

This is an error I got on line 22 of the App.php: Warning: failed to open stream: No such file or directory in on line 22. I don't know where the problem is.

[jmafoko]

the most beautiful thing i have ever seen!!!

[MichaelDPrice]

When you setup the routing ... Why did you call a new version $controller.
Wouldn't it be more efficient to use is_callable(), and create the class in the params, this way you don't have to call if method exists.... ?

[edwardvanbakel]

Help needed!
Line 26 in app.php generates an error (see video at 3:22).
Code: $this->controller = new $this.controller; This line produces the next error:
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 65488 bytes) in on line 26

Thank you in advance for your solution.

[raphaelandrade]

Can i use this route system with PSR-4? i'm saying that because since i'm using namespaces, i wont be able to do that: this->controller = new this->controller; Only if $controller = app\core\Controller

[owencyg]

Hey, i know this is an old series. I was just wondering, how would i pass the current controller to the view? For example. Say I have one 'header.php' view, which i just reload every time, as my header doesn't change. But i need to give HTML elements an active class dependant on what controller is loaded. (In my navigation)

Any help would be greatly appreciated