How to expire/delete/nullify the data array going into a view

How to expire/delete/nullify the data array going into a view - Printable Version

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+--- Thread: How to expire/delete/nullify the data array going into a view (/showthread.php?tid=3071)

How to expire/delete/nullify the data array going into a view - El Forum - 09-07-2007

[eluser]LeePR[/eluser]
I have a view like this:

Code:
// Main view

$data['foo'] = "bar";

$this->load->view('thing1', $data);

$this->load->view('thing2');

$this->load->view('thing3');

In thing1, I can do

Code:
// Thing 1

echo $foo // gives "bar"

however, even though I'm no passing the data array into thing2, thing2 will still see the data e.g.

Code:
// Thing 2

echo $foo // gives "bar"

Even if I change thing1 to the following

Code:
// Thing 1

echo $foo // gives "bar"

$foo = null;

and change the main view to

Code:
// Main view

$data['foo'] = "bar";

$this->load->view('thing1', $data);

$data = null;

$this->load->view('thing2', null);

$this->load->view('thing3');

]

thing2 is still printing out bar!

Code:
// Thing 2

echo $foo // gives "bar"

Caching is off AFAIK (I haven't explicitly turned it on anywhere). Can anyone tell me how I might reset the data array?

How to expire/delete/nullify the data array going into a view - El Forum - 09-07-2007

[eluser]LeePR[/eluser]
If I var_dump the CI instance, I see this (actual code, not relevant to the above example):

Code:
["load"]=>

  &object;(CI_Loader)#10 (26) {

    ["_ci_ob_level"]=>

    int(0)

    ["_ci_view_path"]=>

    string(70) "/home/lee/Development/rsfs/CodeIgniter_1.5.4/system/application/views/"

    ["_ci_is_php5"]=>

    bool(true)

    ["_ci_is_instance"]=>

    bool(false)

    ["_ci_cached_vars"]=>

    array(8) {

      ["view"]=>

      string(14) "create_account"

      ["vars"]=>

      array(0) {

      }

      ["return"]=>

      bool(false)

      ["labelFor"]=>

      string(6) "fm-req"

      ["labelDesc"]=>

      string(13) "State Issued:"

      ["selectId"]=>

      string(11) "stateIssued"

      ["selectName"]=>

      string(11) "stateIssued"

      ["divClass"]=>

      string(6) "fm-req"

    }

The "state issued" stuff is the stuff I'm trying to get rid of. Is it safe to just do something like

Code:
$CI = & get_instance();

$CI->_ci_cached_vars = null; // ???

How to expire/delete/nullify the data array going into a view - El Forum - 09-07-2007

[eluser]LeePR[/eluser]
`$CI->_ci_cached_vars = null` doesn't work. Anyone?

How to expire/delete/nullify the data array going into a view - El Forum - 09-07-2007

[eluser]John_Betong[/eluser]
Hi LeePR,

Code:
// Main view

 $data['top']   = $this->load->view('thing2', '', TRUE);

 $data['body']  = $this->load->view('thing3', '', TRUE);

 $data['foo']   = "bar"; // NOT IN ABOVE SCOPE BUT VISIBLE

 $data['foot']  = $this->load->view('thing1', $data, TRUE);

 $main_view     = $this->load->view('full_page', $data, TRUE);

 echo  $main_view;

 
Try the above, it should work.
 

I believe the method $this->load->view(...) sole purpose is to output a single view/html webpage.
 
Ironically my problem is usually "Variable not declared" so I tend to use code such as the following:

Code:
<div>

     &lt;?= isset($foo) ? $foo : heading('Spot the Looney ==> $foo has not been set', 1) ?&gt;

   </div>