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How to retain content of variable between calls

 
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omstefanov
Smarty n00b


Joined: 15 Apr 2010
Posts: 1

PostPosted: Thu Apr 15, 2010 7:59 pm    Post subject: How to retain content of variable between calls Reply with quote

Hi,

I'm trying to add some logic in a rather complex application consisting of php with smarty templates. To do so I need to be able to store the value of a variable that is only known at the time a smarty tpl is executed, and then be able to query this value on a future execution.

I've tried, in the php to define the variable as global:
Code:
global $prev_value;


Then, in the tpl, to query this variable by:
Code:
{if $prev_value != $f_45}
       ... do something
{/if}

and then, at the end of the tpl to save the value, by:
Code:
{assign var='prev_sort_value' value=$f_45}

or, when this didn't seem to work, by:
Code:
{php}
  assign(var='prev_value' value=$f_45);
{/php}


Whenever I display {prev_value} at the end, I see a value, but by the next time the value is empty again.

I even tried to add a "define global" at the start of the tpl. I'm not sure if this is the right way:
Code:
{php}
 global $prev_value;
{/php}


Can anyone tell me how to fix this, or show a better way? There must be a way to change a value of a variable (defined elsewhere) within a smarty tpl and have this value persist. Or?

Kind regards,
omstefanov[/code]
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