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Hide field if define is empty

 
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Bluepink
Smarty n00b


Joined: 06 Nov 2013
Posts: 3
PostPosted: Wed Nov 06, 2013 7:04 pm    Post subject: Hide field if define is empty Reply with quote
Hi Everyone, This is the first time Ive worked with smarty so please go easy on me.

I have the drop down list below, with each option being populated from my language file with the "define" field, also below.


Code:
<select name="showname" class="required" style="width: 155px;">
                  <option value="{$smarty.const.SHOW_1|htmlentities:3:'UTF-8'}"{if isset($movies) && $movies->showname} selected{/if}>{$smarty.const.SHOW_1|htmlentities:3:'UTF-8'}</option>
                  <option value="{$smarty.const.SHOW_2|htmlentities:3:'UTF-8'}"{if isset($movies) && $movies->showname} selected{/if}>{$smarty.const.SHOW_2|htmlentities:3:'UTF-8'}</option>
                  ---59 other options--
</select>


Code:
/**
 * Shows
 */
define("SHOW_1",                           "show blah blah");
define("SHOW_2",                           "show blah blah2");
define("SHOW_3",                           "");


now this works perfectly when there is a defined show, like SHOW_1 & SHOW_2, but when it comes to SHOW_3, the value is blank as i imagined it would be, but i was hoping
the blank fields wouldn't be visible on the website, instead hidden until a value was inserted into the SHOW_3 define. Unfortunately this isn't the case, so, my question is, can i hide the field if there is no value for "SHOW_3"?

I apologize if that was really confusing, if it was then i will try to explain again.

Any help would be fantastic as Ive been trying to figure this out for the last 5/6 hours.

Chris.
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U.Tews
Administrator


Joined: 22 Nov 2006
Posts: 5068
Location: Hamburg / Germany
PostPosted: Thu Nov 07, 2013 1:10 am    Post subject: Reply with quote
To test if a constant is defined does require a special if condition.

Code:
{if null !== $smarty.const.SHOW_3}<option value="{$smarty.const.SHOW_3|htmlentities:3:'UTF-8'}"{if isset($movies) && $movies->showname} selected{/if}>{$smarty.const.SHOW_3|htmlentities:3:'UTF-8'}</option>{/if}
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Bluepink
Smarty n00b


Joined: 06 Nov 2013
Posts: 3
PostPosted: Thu Nov 07, 2013 1:51 am    Post subject: Reply with quote
Thank you so much, it worked almost perfectly. there was an extra "=" that once removed it worked perfect.

Chris
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U.Tews
Administrator


Joined: 22 Nov 2006
Posts: 5068
Location: Hamburg / Germany
PostPosted: Thu Nov 07, 2013 1:56 am    Post subject: Reply with quote
I just made another test

Code:
{if $smarty.const.SHOW_3}


would do it also
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Bluepink
Smarty n00b


Joined: 06 Nov 2013
Posts: 3
PostPosted: Thu Nov 07, 2013 2:54 am    Post subject: Reply with quote
That's even better Very Happy Less code has to be better Very Happy

Thank you, I really appreciate it Smile

Chris
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