How to implement not with if statement in Ember Handlebars

ember.jshandlebars.js

I have a statement like this:

{{#if IsValid}}

I want to know how I can use a negative if statement that would look like that:

{{#if not IsValid}}

Best Answer

Simple answers for simple questions:

{{#unless isValid}}
{{/unless}}

Also keep in mind that you can insert an {{else}} in between an {{#if}} or {{#unless}} and the closing tag.

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Try this:

<ul id="luke_should_be_here">
{{people.1.name}}
</ul>

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This is possible by 'cheating' with a block helper. This probably goes against the Ideology of the people who developed Handlebars.

Handlebars.registerHelper('ifCond', function(v1, v2, options) {
  if(v1 === v2) {
    return options.fn(this);
  }
  return options.inverse(this);
});

You can then call the helper in the template like this

{{#ifCond v1 v2}}
    {{v1}} is equal to {{v2}}
{{else}}
    {{v1}} is not equal to {{v2}}
{{/ifCond}}

Best Answer

Related Solutions

Javascript – How to access an access array item by index in handlebars

Javascript – Logical operator in a handlebars.js {{#if}} conditional

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