Is there a way to automatically run a class's parent's construct method

[ttocskcaj]

I'm working on a MVC  website,

At the moment my controller class has the constructor

function __construct(){
    $view = new Smarty();
}

Every time I make a new controller extending this class I have to do this

function __construct(){
    parent::__construct();
}

so that the view object is created.

Is there anyway to do that automatically without having the parent::__construct() line?

[phpSensei]

I don't see any other way, if someone knows enlighten me also..

[ignace]

Leave the constructor out of the child class. It will automatically call the parent constructor.

 

Use the below trick if you for some reason still would need to overwrite the parent constructor:

 

public function __construct() {
    $this->view = new Smarty();
    
    $this->init();
}

public function init() {/*overwrite this method in the child class*/}

[ttocskcaj]

Removing the constructor on the child class gives

Call to a member function assign() on a non-object

[trq]

Can we see the relevant code?

[ignace]

Removing the constructor on the child class gives

Call to a member function assign() on a non-object

 

Your view should be protected not private if you intend to use it in the child classes. Your code previously worked because you created a new public variable view on your child object in the constructor.

[ttocskcaj]

Parent is here https://github.com/ttocskcaj/TTMailer/blob/master/includes/controller.class.php

child is here https://github.com/ttocskcaj/TTMailer/blob/master/public/controllers/index.php

[trq]

And the relevant code? Where the objects are created?

[ttocskcaj]

I've never done this MVC stuff before :s

This file is supposed to take variable from the URI and create the controller object.

https://github.com/ttocskcaj/TTMailer/blob/master/index.php

[phpSensei]

Leave the constructor out of the child class. It will automatically call the parent constructor.

 

Use the below trick if you for some reason still would need to overwrite the parent constructor:

 

public function __construct() {
    $this->view = new Smarty();
    
    $this->init();
}

public function init() {/*overwrite this method in the child class*/}

 

I have my brain wrapped out Sub-Classing recently...]

 

thats the only reason i would see to call a parent's constructor, if your using a framework or had build your own...

 

class Application(Frame):
    def __init__(self, master=None):
        Frame.__init__(self, master,height=2)
        # create a grid
        self.grid()
        self.createWidgets()
        self.grid_propagate()

    def createWidgets(self):
        return(0)
                                                      
app = Application()
app.master.title("User Input")
app.mainloop()

 

 

[ttocskcaj]

phpSensei, I don't follow you.

I'm just going to assume there's no simple way to do this?

I should probably just use an MVC framework

[ttocskcaj]

I made it work.

It works when you don't declare the view property at the start of the class.

 

So instead of

class controller {
    public $view;
    __construct(){
        $view = new Smarty();
    }
}

just do

class controller {
    __construct(){
        $view = new Smarty();
    }
}

 

It doesn't work if you make $view private, or protected either. You just have to leave it out.

[trq]

But then $view is not accessible outside of the __construct.

[ttocskcaj]

sorry, that should have been

$this->view