how to create a global variable and where to create it?

Yii 1.1 General Discussion
1

i want to create a global variable for the site’s upload directory location how can i create it and where can i create it.

one option in mind is the use of setState()

but can’t figure out where to set it to use it for the whole site with/without login required

2

You can use ‘params’ in config/main.php

3

params are working well

one problem:

when i use this inside the params

‘imagesURL’=>Yii::app()->request->baseUrl.’/images/’,

it says

Notice: Trying to get property of non-object in C:\…\protected\config\main.php

but when i use Yii::app()->request->baseUrl in model it works fine <_<

what is the problem?

4

i m using


        'imagesDirectory'=>dirname(dirname(__FILE__).DIRECTORY_SEPARATOR.'..'). '/../../media/images/',

in the params array in config main.php

is this good or a bettor way exists to get full path to directory and define it as a global variable ???

5

The error means that the Yii object is not yet created at that time… so you need to set the folder manually… like you done in the second post

6

You could also use path aliases to define filesystem locations related to your application:




'imagesDirectory'=>'webroot.media',

Then when you later want to use that path:


$imageDir=Yii::getPathOfAlias(Yii::app()->params['imagesDirectory']);
7

Hi Friend Maurizio Domba

I have the same trouble.

When I use global to define variables, in some files, the info not is keepit

I want to say that i want change the value of this variable and I can doit.

With "params" in cofig main.ph is the same

The variable lost the changes.

Example.

In the view "main" of layout i assing a value to variable global o parameter

When i try to use this value, by example in te action "view" the info is lost.

Don’t keep the information.

I think that "param" is an "Constant" but not a variable

Can you Help me?

Thank you in advice.

Greetings

8

Hi Friends,

If you want access your define variables in config/main.php than follow the steps.

‘params’=>array(‘productImage’ => ‘/imagefolder/’,),

Step 1

In your protected&#092;components&#092;Controller.php do the following things.


   

       class Controller extends CController{

            public $productImageFolder = ''; // declare the product image folder variable with value as empty

            public function init(){

         	$this->productImageFolder = YII::app()->params['productImage'];//assign the config variable value.

            }

       }

Step 2

 Through init function in Component controller, we can access that value in any controller.


 In your controller access that variable with [b]&quot;&#036;this&quot;[/b].


 

        $this->chkFileExist('./'.$this->productImageFolder.'/');

Hope this will be help. :rolleyes: