What is Liquid Programming?
What is a Shopify theme?
A Shopify subject is what defines the overall layout, appearance, and sense of your store. It’s the framework that you use to build all the factors of your store round.
The subject is the muse of your save.
It’s what all your pages, apps, photos, and so on rest on, so ensuring they have a solid foundation is crucial to its fulfillment.
Can you create your own Shopify theme?
The short answer is yes!
Shopify has developed a marketplace where both premium and free pre-built themes give store owners a library of visually stunning themes that make short work of getting a store up and running.
You can save time and money by going the pre-designed route.
But if you’re reading this post, then the chances are you’re already aware of the drawbacks:
- Limited scalability designed for non-technical users
- Limited customization
- Designed for aesthetics and not necessarily for conversions
The alternative to these pre-built themes is to create your own custom theme for your Shopify store.
What is Liquid Programming?
The liquid is an open-source template language created by Shopify and written in Ruby. It is the backbone of Shopify themes and is used to load dynamic content on storefronts. Liquid has been in production use at Shopify since 2006 and is now used by many other hosted web applications.
Liquid uses a combination of objects, tags, and filters inside template files to display dynamic content.
Objects
Objects contain the content that Liquid displays on a page. Objects and variables are displayed when enclosed in double curly braces: {{ and }}.
Input
{{ page.title }}Output
IntroductionIn this case, Liquid is rendering the content of the title property of the page object, which contains the text Introduction.
Tags
Liquid tags are used to create logic and control flow for templates. The curly-brace percentage delimiters {% %} and the text that they surround do not produce any visible output when the webpage is rendered. This lets you assign variables and create conditions or loops without showing any of the Liquid logic on the page.
For example, you can use Liquid tags to display different content on the product page depending on whether a product is available:
If the product is available, then the output will be:
If the product is not available, then the output will be:
The above example uses, if and else Liquid tags are control flow tags.
Tags can be categorized into various types:
Filters
Filters are a means of formatting or performing operations on your object data. They are included in an output tag {{ }} and begin with a pipe character |. Filters can be used in combination, reading from left to right, to perform multiple actions on an object.
Default
Specifies some optional default value to be inserted when computed Liquid results in a nil value or an empty string “”.
Input
Hey {{ subscriber.first_name | default: “there” }}!Output
<!-- If subscriber.first_name is nil -->
Hey there!<!-- If subscriber.first_name is "Bob" -->
Hey Bob!
A simple example is the capitalize string filter:
The filter modifies the string by capitalizing it. The output will be:
Multiple filters can be used on one output, and they are applied from left to right:
The string is first capitalized, and then the word world is removed. The output will be:
You can use Liquid filters to make a wide variety of useful data manipulations. Liquid filters are categorized into the following types:
- Array filters
- Color filters
- HTML filters
- Math filters
- Money filters
- String filters
- URL filters
- Additional filters
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