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phptwigconditional-operator
Meliborn
Meliborn

Reputation: 6645

Twig ternary operator, Shorthand if-then-else

Does Twig support ternary (shorthand if-else) operator?

I need some conditional logic like:

{%if ability.id in company_abilities %}
    <tr class="selected">
{%else%}
    <tr>
{%endif%}

but using shorthand in Twig.

Upvotes: 210

Views: 272707

Answers (5)

Ben Swinburne
Ben Swinburne

Reputation: 26467

{{ (ability.id in company_abilities) ? 'selected' : '' }}

The ternary operator is documented under 'other operators'

Upvotes: 399

Vinci
Vinci

Reputation: 1286

If the price exists from the database for example then print (Price is $$$) else print (Not Available) and ~ for the concatenation in Twig.

{{ Price is defined ? 'Price is '~Price : 'Not Available' }}

Upvotes: 9

WebMan
WebMan

Reputation: 384

I just used a as a general variable name. You can also use endless if else like this:

{{ a == 1 ? 'first' : a == 2 ? 'second' : 'third' }}

Upvotes: 1

Peyman Mohamadpour
Peyman Mohamadpour

Reputation: 17944

Support for the extended ternary operator was added in Twig 1.12.0.

  1. If foo echo yes else echo no:

    {{ foo ? 'yes' : 'no' }}

  2. If foo echo it, else echo no:

    {{ foo ?: 'no' }}

    or

    {{ foo ? foo : 'no' }}

  3. If foo echo yes else echo nothing:

    {{ foo ? 'yes' }}

    or

    {{ foo ? 'yes' : '' }}

  4. Returns the value of foo if it is defined and not null, no otherwise:

    {{ foo ?? 'no' }}

  5. Returns the value of foo if it is defined (empty values also count), no otherwise:

    {{ foo|default('no') }}

Upvotes: 127

mgalic
mgalic

Reputation: 1869

You can use shorthand syntax as of Twig 1.12.0

{{ foo ?: 'no' }} is the same as {{ foo ? foo : 'no' }}
{{ foo ? 'yes' }} is the same as {{ foo ? 'yes' : '' }}

Upvotes: 147

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