Control flow
Control flow
Control flow tags can change the information Liquid shows using programming logic.
if
Executes a block of code only if a certain condition is true.
Input
{% if product.title == 'Awesome Shoes' %} These shoes are awesome! {% endif %}
Output
These shoes are awesome!
unless
The opposite of if – executes a block of code only if a certain condition is not met.
Input
{% unless product.title == 'Awesome Shoes' %} These shoes are not awesome. {% endunless %}
Output
These shoes are not awesome.
This would be the equivalent of doing the following:
{% if product.title != 'Awesome Shoes' %} These shoes are not awesome. {% endif %}
elsif / else
Adds more conditions within an if or unless block.
Input
<!-- If customer.name = 'anonymous' --> {% if customer.name == 'kevin' %} Hey Kevin! {% elsif customer.name == 'anonymous' %} Hey Anonymous! {% else %} Hi Stranger! {% endif %}
Output
Hey Anonymous!
case/when
Creates a switch statement to compare a variable with different values. case initializes the switch statement, and when compares its values.
Input
{% assign handle = 'cake' %} {% case handle %} {% when 'cake' %} This is a cake {% when 'cookie' %} This is a cookie {% else %} This is not a cake nor a cookie {% endcase %}
Output
This is a cake
© 2005, 2006 Tobias Luetke
Licensed under the MIT License.
https://shopify.github.io/liquid/tags/control-flow/