I am writing a plugin, and everything is working fine so far. Some of my source data includes booleans. So I want to be able to test for true or false.

{if show_data}
   <p>This is some data</p>

But it won't work. Are booleans not supported or am I doing something wrong?


Here is a sample of how I would like to assign a boolean.

$array = array('show_data' => true);
$str = $this->EE->TMPL->parse_variables($this->EE->TMPL->tagdata, $array);

return $str;
  • Can you show us what your data array looks like? Are you using ee()->TMPL->parse_variables() to return it in your plugin? Dec 12 '13 at 19:59
  • Seems to be a common question. I'm having the same issues with the 'matrix' plugin. Have you tried comparison operators? {if show_data != "false"} or {if 'show_data' != ""} Also, what version of EE are you using? Dec 12 '13 at 20:57
  • We are using 2.7.2 I am just using a number for now. It sounds like booleans are not supported. Dec 12 '13 at 21:39

If I'm not mistaken, I read that you must return boolean values from plugins and modules as 'TRUE' and 'FALSE'
EE Template Class - Conditional Variables

  • 1
    I don't have enough rep to upvote yet, but MB34 is correct. I've had this issue before in the past too.
    – JamesNZ
    Dec 12 '13 at 21:41
  • So a string of 'FALSE' can be used as a boolean then. It looks like a hack. But I'll have to use it for now. Dec 12 '13 at 21:48
  • 1
    Not a hack if that is the way it is supposed to be done per the tool being used.
    – MB34
    Dec 12 '13 at 23:12
  • Sure, it wouldn't be a hack by us EE users, but a hack by the makers of EE. Dec 13 '13 at 19:43
  • 1
    This answer is not correct and these comments are misleading. Please see my answer (and forgive my arrogance!). Jan 16 '14 at 23:07

It is not the case that you need to set your booleans as 'true'/'false' strings, it's that your variables array needs to be nested in its own array like this:

$array = array(array('show_data' => true));
$str = $this->EE->TMPL->parse_variables($this->EE->TMPL->tagdata, $array);    
return $str;

You'll now find that outputting {show_data} in a template will return 1, and as such can be used in conditionals like so:

{if show_data}It's true{/if}
{if show_data == 0}It's false{/if}
{if show_data == ''}It's false{/if}
{if !show_data}It's false (as of EE 2.9+){/if}

Docs: http://ellislab.com/expressionengine/user-guide/development/usage/template.html#master-variables-array

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