jekyll-datapage_gen
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avillafiorita
Support for custom data mapping
Hello,
Is it possible to use custom data mapping? For example I would like to be able to control other elements - specifically the subtitle, and perhaps show_sidebar which is part of the ??front matter??. Please excuse my ignorance - I'm very new to jekyll.
Right now subtitle: scenario seems to be ignored
page_gen:
- data: skill-sprints
template: skill-sprint
dir: skill-sprints
index_files: false
name: url
title: name
subtitle: scenario
---
title: Title Text
subtitle: Subtitle Text
layout: category
show_sidebar: false
---
Thanks,
Andrew
+1 here! Specifically not being able to set description and other front matter SEO related items is very limiting.
Hi - thanks for the feedback. There is a workaround. I am not even sure it is an issue with the plugin.
More in details: substitution of liquid tags does not seem to be recursively applied. In other words: you can reference and use data fields directly in your layouts, but you cannot define a front-matter variable in a layout, based on a data field and have its content replaced in the layout. Hence if you use the data fields directly, you should be fine. (Detailed explanation below.)
Whether this is a bug of the plugin, a bug of Jekyll or a feature of both, to be honest, I can't tell.
Detailed Explanation
Consider the example directory and let us use a new layout:
- data: 'members'
template: 'default'
dir: 'metadata'
name: 'full_name'
where _layouts/default.html= is.
<html>
<head>
<title>{{page.title}}</title>
<meta author="{{page.full_name}}">
<meta description="{{page.description}}">
</head>
<body>
{{content}}
</body>
</html>
Notice that the author field references a field in member.yml, while, at the moment, the description field does not reference any field. The generation works fine and the metadata is correctly generated, that is, we get:
[...]
<meta author="Adolfo Villafiorita">
[...]
The line referencing {{page.description}} will result in the empty string, since there is no description field in members.yml.
However, if we use one level of "indirection", that is, we define variables in the front-matter of a layout and try to use them in another layout, the liquid tags are not replaced.
That is, if:
- data: 'members'
template: 'metadata'
dir: 'metadata'
name: 'full_name'
where _layouts/metadata.html is:
---
title: {{page.name}}
layout: default
description: Homepage of {{page.full_name}}
---
{{ content }}
Then we get the following:
[...]
<meta author="Adolfo Villafiorita">
<meta description="Homepage of {{page.full_name}}">
[...]
That is, {{description}} in default.html gets substituted with its value defined in metadata.html, but {{page.full_name}} in the definition of the description field does not.
Anybody think of a way to solve this problem using this plugin
https://github.com/gemfarmer/jekyll-liquify
