Meteor : get the opposite statement from a variable into handlebars

Question

I'm discovering Meteor and was asking myself for a thing. How in a template can we reverse the boolean into the handlebars from a template ?

There is an example of what I'm trying to do :

task.html

<li class="{{#if !checked}}checked{{/if}}">
    ...

But I'm getting an error "Expected close "}}". Maybe it's not possible.

Thank you !

score 1 · Accepted Answer · edited May 23 '17 at 12:14

1

Use {{#unless}} :

Example of use :

{{#unless checked}}
    ....
{{/unless}}

edited May 23 '17 at 12:14

Community

answered Jul 18 '16 at 10:32

Ilshidur

Didn't find anything with my keywords, now I know why.. Thanks ! – Timtim Jul 18 '16 at 10:39
All you need to know about Blaze you will find in the guide. Look at: https://guide.meteor.com/blaze.html – Tom Freudenberg Jul 18 '16 at 16:21

score 1 · Answer 2 · answered Jul 18 '16 at 10:33

1

There is no ! syntax handling in the template. Neither {{#if !myVar}} nor {{#if not myVar}} worked.

You need to remove ! from !checked:

<li class="{{#if checked}}checked{{/if}}">

Or you can use unless:

<li class="{{#unless checked}}checked{{/unless}}">

answered Jul 18 '16 at 10:33

Joey Etamity

Yeah, it's weird we can't find it easily in the documentation. Thank you for your response ! – Timtim Jul 18 '16 at 10:40

2 Answers2