{if not isset} Smarty

Question

what is the code for smarty for if (!isset($var)){ ?

if using {if $x eq '5'} when $x is not defined in smarty , it gives an error function call 'get_template_vars' is unknown or deprecated. . this is what i believe so far as i lost hope in trying to know where did this error come from !

Thanky you .

score 40 · Accepted Answer · answered May 10 '11 at 15:56

40

{if ! isset($var)}
body must be at least 30 characters. :)
{/if}

answered May 10 '11 at 15:56

Timofey Stolbov

4,501
3
40
45

5

Alternatively you can use `not` as in `{if not isset($var)}` [Source](http://www.smarty.net/docs/en/language.function.if.tpl) – Ron van der Heijden Sep 15 '14 at 13:43

Vladimir Djuricic · Answer 2 · 2012-12-02T16:28:06.703

7

Try this.

{if $missing_var|default:FALSE}
NOT MISSING
{else}
MISSING
{/if}

edited Dec 02 '12 at 16:28

answered Jun 28 '12 at 08:12

Vladimir Djuricic

4,323
1
21
22

score 1 · Answer 3 · edited Dec 18 '14 at 06:38

1

Try This

{if $var}
   Active
{else}
   Inactive
{/if}

edited Dec 18 '14 at 06:38

Gunaseelan

2,494
5
36
43

answered Mar 03 '14 at 11:22

Anil R

289
1
6

4

what if the $var was SET and containing value of FALSE ? – Rami Dabain Jul 20 '16 at 20:44
if $var is not set, this will throw undefined notices in smart3. – seven Sep 16 '20 at 10:49
@RamiDabain Avoid using boolean in if statements, try to use a string like $var = 'hasValue' instead if you need to do a conditional anyway. This can be a returning issue in any language you use, javascript as well. – Dgloria Oct 25 '21 at 09:32
When you have E_NOTICE activated, this solution doesn't work. – Meloman Aug 18 '22 at 05:15

{if not isset} Smarty

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