Access Specific Data Using Front Matter


#1

I’m trying to follow the example given on the Jekyll docs (http://jekyllrb.com/docs/datafiles/#example-accessing-a-specific-author) to access specific values from a row of a CSV file based upon a value specified in the Front Matter. I can’t even get the example code from the docs to work.

CSV file cities.csv:

name,description
Dallas,Big City in Texas

index.html content:

---
city: Dallas
---

{% assign city = site.data.cities[page.city] %}
<a rel="author"
  href="https://twitter.com/{{ author.twitter }}"
  title="{{ city.name }}">
    {{ city.name }}
</a>

#2

do you get an error?

is author defined? if not author.twitter could be your problem.


#3

Looks like site.data.cities[page.city] doesn’t contain any data, which is why you’re not getting anything to output.

Jekyll has a handy filter called inspect that you can throw onto the end of a variable to see what it contains.

{% assign city = site.data.cities[page.city] %}
{{ city | inspect }}

Which outputs nil.

To do what you want I believe you need to loop through the site.data.cities data file. Something like this works for me.

{% assign cities = site.data.cities %}

{% for city in cities %}

  {% if city.name == page.city %}
    <a rel="author"
      href="https://twitter.com/{{ author.twitter }}"
      title="{{ city.description }}">
        {{ city.name }}
    </a>
  {% endif %}

{% endfor %}