If statement to check if content exists in Frontmatter

#1

I’m creating a landing page builder and I’m including all content in frontmatter and having partials pull that local data in dynamically. But I would like to include some sort of check to see if that front matter data exists, and if it doesn’t, I’d like to tell the partial to not render a blank tag.

For instance. My frontmatter may look like this:

cta:
  headline: This is a call to action.
  subhead: We really think you're gonna love us.
  button_text: Sign Up

My partial call looks like this:

= partial(:'partials/landing_builder/_cta_form.slim', :locals => { :headline => current_page.data.cta.headline, :subhead => current_page.data.cta.subhead, :button_text => current_page.data.cta.button_text })

And the partial code is something like this:

section.landing_cta
  .row.align-center
    .small-11.columns
      h2 = headline
      p = subhead

Can I wrap the h2 and p tags in some sort of if statement that checks to see if that content exists in frontmatter?

#2

Hiya

I use tons of partials on - http://codeblender.net/
Check out - https://github.com/iwarner/CodeBlender-Middleman

Now firstly for yours I would just likely pass in the whole

current_page or current_page.data

= partial(:'partials/landing_builder/_cta_form.slim', :locals => { data: current_page.data })

Make it easier for the partial to manipulate - you can then do sense checking in the partial

data = locals[:data]

- if ! locals[data.heading]

Maybe able to use .empty() .blank() etc also

Anyway hope this points u in the right direction.

You should also read up on HAML statements - or check out some of my partials for guidance on whats possible. Or use codeblender :slight_smile:

1 Like
#3

Thanks. This is helpful, but I’m having some trouble implementing it. Getting NameErrors

#4

Nevermind! I figured it out.

data: current_page.data needed to be :data => current_page.data for my slim templates.

#5

ok, so I’m able to pass data into the partial this way and it’s much cleaner, for sure. I’m still not sure how to perform the check for data in the partial though.