Create Jekyll link from YAML array - yaml

I have a YAML array in a file called navigation.yml as follows:
docs:
- title: Home
url: index.md
id: index
- title: Support
url: support.html
id: support
- title: About
url: about.md
id: about
I am creating a navigation bar as follows:
<section id="navigation" class="clearfix">
{% for item in site.data.navigation.docs %}
<span>{{ item.title }}</span>
{% endfor %}
</section>
What should I put in place of index.md to get the item.url that I want from the YAML file.
I am totally new to GitHub Pages, YAML, and Jekyll.

At the moment, the link tag doesn't seem to support variables.
There's a pull request trying to change this, but it has not been merged into the main Jekyll repo yet.
So if you want to do this now, you need to use some tricks.
The solution suggested by flyx in his comment (replace {% link index.md %} by {{ item.url }}) basically works, but shows the original filename written in the data file.
⇒ If index.md is automatically renamed to index.html while rendering the site, your link won't work anymore.
(or if support.html becomes support/index.html)
That's probably why you wanted to use the link tag instead.
Without using the link tag, you need to loop your data file, loop through all pages to find the respective page, and show that page's actual URL in your link:
<section id="navigation" class="clearfix">
{% for item in site.data.navigation.docs %}
{% for page in site.pages %}
{% if page.path == item.url %}
<span>{{ item.title }}</span>
{% endif %}
{% endfor %}
{% endfor %}
</section>
This even takes stuff like explicitly set permalinks (permalink: /whatever/ in the page's front matter) into account.

Related

How to add new posts like page in Jekyll?

I am setting up a GitHub page which uses Jekyll. I know how to create a new post, new page. I wanted a new "posts" like the page, wherein I can add posts which I want to. So there will be a posts page (by default) and there will be some other page say blog, both of which shows some posts in the appropriate category.
You can create a page which lists all posts which have a certain category or tag.
Example code from the link:
---
layout: page
---
{% for post in site.categories[page.category] %}
<a href="{{ post.url | absolute_url }}">
{{ post.title }}
</a>
{% endfor %}
If the .md files you are talking about aren't posts, you can use Collections.
Here's example code from the link tailored to your xyz example - basically, you define your collection in the config file:
collections:
- xyz
Then, you create .md files in an _xyz folder, and you can display a list of them like this:
{% for item in site.xyz %}
<h2>{{ item.title }}</h2>
<p>{{ item.description }}</p>
<p><a href = "{{ item.url }}" >{{ item.title }}</a></p>
{% endfor %}

Jekyll Pagination Path Doesn't Include Page Number

I am attempting to create pagination in Jekyll under the path '/notes/'.
In my _config.yml, I have:
paginate: 2
paginate_path: "/notes/:num/"
In my /notes/index.html, I have:
<div class="pagination">
{% if paginator.previous_page %}
Previous
{% else %}
<span class="previous section link">Previous</span>
{% endif %}
<span class="page_number section">{{ paginator.page }} / {{ paginator.total_pages }}</span>
{% if paginator.next_page %}
Next
{% else %}
<span class="next section link">Next</span>
{% endif %}
</div>
When I load http://localhost:4000/notes, I see that the 'Previous' link is not linking to /notes/2, but instead it simply links to /notes/, the page that I am already on. Additionally, when looking in the generated _site folder, I see that /notes/2 has not been created, despite having more than two posts created.
So, I suppose my question is, how can I fix this and get jekyll to paginate properly?

Struggling to find array in Jekyll config file (site navigation)

In my _config.yml I have:
navigation:
- text: Home
url: index.html
- text: About
url: about.html
- text: Blog
url: blog.html
- text: Portfolio
url: portfolio.html
In my default.html layout I have:
<ul class="nav-list">
{% for link in site.navigation %}
{% assign current = nil %}
{% if page.url == link.url %}
{% assign current = 'current' %}
{% endif %}
<li class="nav-list-item{% if forloop.first %}first{% endif %} {{ current }} {% if forloop.last %}nav-list-item-last{% endif %}">
<a class="{{ current }}" href="{{ link.url }}">{{ link.text }}</a>
</li>
{% endfor %}
</ul>
For some reason, this is not working. Why might this be?
I just found out you have to restart the server and run jekyll --server again and the _config.yml variables will be accessible.
Then after figuring it out came back to this page and was about to post this answer, clicked add / show 4 more comments and saw that this was also found out by the op. So posting it as answer.
In addition to the other answer: You can - as you mentioned in your answer - use Ctrl + C to end the currently running server (in your CLI). But, you can as well start the server with
jekyll server -w
to tell Jekyll to watch for changes in your files. Whilst this won't work for changes to the _config.yml, it works for all other files. Note, that this won't work including the --safe option, so you won't get errors. To catch them, I still recommend to run jekyll --safe build from time to time to see if you got syntax errors. The same goes for running jekyll doctor/jekyll hyde sometimes during your dev process.

Post without title in Jekyll

In my Jekyll blog, I would like some posts not to have a title. How could I modify the Jekyll codebase to make it so that posts do not require a title?
You don't need to alter the jekyll codebase to remove titles. That can be done using different layouts with appropriate liquid filters and tags.
For individual post pages, simply make a new layout file (e.g. "_layouts/no-title-post.html") that doesn't have the {{ page.title }} liquid tag. In your _posts source file, set the YAML front matter to call it. For example:
---
layout: no-title-post
---
Note here that "title:" isn't required in the YAML front matter. If jekyll needs it, the value will be automatically crated from the filename. For example, "_posts/2012-04-29-a-new-post.md" would have its title variable set to "A New Post" automatically. If your templates don't call the title tags, it won't matter. You could include a "title:" in the front matter and it simply wouldn't be displayed.
You can also display the page without the title in your listing/index pages. Check the posts layout to determine if the title should be displayed. For example, to show titles on all your pages except ones that have the 'no-title-post' layout, you would do something like this:
{% for post in paginator.posts %}
{% if post.layout != 'no-title-post' %}
<h1>{{ post.title }}</h1>
{% endif %}
<div class="postContent">
{{ post.content }}
</div>
{% endfor %}
In that case, the link to the page itself is also removed. If the page needs to be addressable, you would have to add the link back in somewhere else.
edemundo's solution doesn't work anymore in all cases with Jekyll 3.
I use an empty title as default:
defaults:
-
scope:
type: "posts"
values:
layout: "post"
title: ""
Then you can compare titles against the empty string in your layouts, for example:
{% if post.title == "" %}
{{ post.content | strip_html | truncatewords:5 }}
{% else %}
{{ post.title }}
{% endif %}
If you like the automatic title generation you can use as frontmatter:
---
title: ""
---
I was having the same doubt, then I stumbled on this really simple solution:
{% if post.title %}
<h1>{{ post.title }}</h1>
{% endif %}
And then in the post file itself you would leave the title variable empty:
---
layout: post
title:
---
This way, the h1 will not print if the title is empty. I found this method particularly useful for post types like quotes, which most of the time doesn't have titles.

Author archive pages in Jekyll

I'm trying to make a multiple author blog with Jekyll on Github pages. I added authors array field to _config.yml and I can use that data on posts template.
_config.yml:
authors:
muratcorlu:
display_name: Murat Corlu
avatar: 2906955ae59c795275979d3782d7bfca
posts.html
{% assign author = site.authors[page.author] %}
<p>Author: {{ author.display_name }}</p>
Now I want to make an author archive page with a url like /authors/muratcorlu/ (i.e. listing posts authored by muratcorlu), but I don't know how can I get author name from url.
I'm afraid you can't create those pages automatically. If you have 5 authors, you will have to create 5 pages manually. The pages can use the same layout, so it will not be very painful.
This would be authors/muratcorlu.textile
---
layout: author
author: muratcorlu
---
You would have to create each of those manually. Fortunately, you don't have to do anything else - the rest can be put in a shared layout that can look like this:
<ul>
{% for p in site.pages do %}
{% if p.author == page.author %}
<li>{{ p.title }}</li>
{% endif %}
{% endfor %}
</ul>

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