All threads / How do I dynamically load variables in Liquid templates?

Ask A Question


You’re not receiving notifications from this thread.

How do I dynamically load variables in Liquid templates?

Yi Mei Wang asked in General

I'm new to using Liquid templates, but I'm wondering how do I load data dynamically in my controller? The reason is because all the data is stored in my db in different tables, and loading all of them requires a lot of join queries and more of than not, a single page will almost never use all of the queried data.

I don't think it's efficient to run 20+ queries to only use 5, is there a way to know what the Liquid needs and only load those when necessary?

Yup! For standard use you can just pass it the content from a record that has handlebars in it, and call render with a parameters hash.

<%= Liquid::Template.parse(@blog.custom_content).
      render('page_content' => Post.first.content, 'page_title' => Post.first.title) %>

Using your example, I'm thinking more of only querying Page.first.content if the template itself uses page_content. I'm in a situation where my liquid templates are user generated, so I'm not sure what data will be required.

Join the discussion

Want to stay up-to-date with Ruby on Rails?

Join 48,387+ developers who get early access to new tutorials, screencasts, articles, and more.

    We care about the protection of your data. Read our Privacy Policy.

    logo Created with Sketch.

    Ruby on Rails tutorials, guides, and screencasts for web developers learning Ruby, Rails, Javascript, Turbolinks, Stimulus.js, Vue.js, and more. Icons by Icons8

    © 2021 GoRails, LLC. All rights reserved.