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Is there a "break" tag to escape a loop in Liquid?
(1 answer)
Closed 9 years ago.
I'm processing site.posts to compare post.categories against page.categories to create a related posts sidebar but if there are multiple common categories I get multiple links.
I want to break the inner loop but can't find anything to suggest this is possible.
Roughly (because on train and phone) the code I have is
{% for post in site.posts %}
{% for postcat in post.categories %}
{% for cat in page.categories %}
{% if cat == postcat %}
<p> {{ post.title }} </p>
{% endif %}
{% endfor %}
{% endfor %}
{% endfor %}
Not sure this is even doable
This is more of a Liquid Templating engine question, than a Jekyll one. It appears that Liquid has support for a {% break %} tag which is what you are looking for.
I would suggest making sure your Liquid gem is updated and then try using {% break %} in your code as suggested here.
Possible Duplicate
Related
The official Jekyll tutorial has an entire section on using a YAML file to define a custom sequence of pages: https://jekyllrb.com/tutorials/navigation/
But it doesn't mention anywhere how one might create previous/next navigation buttons on the pages within that sequence, which is particularly ironic considering that the tutorial itself has them.
I've come up with some Liquid to determine the index of the current page:
{% for item in site.data.encore.docs %}
{% if item.url != page.url %}
{{ item.title }}: {{ forloop.index }}
{% else %}
<strong> This page index: {{ forloop.index }}</strong>
{% assign this_page_index = forloop.index %}
{% break %}
{% endif %}
{% endfor %}
but getting the index of the previous page via {% decrement this_page_index %} always returns -1 for some reason, and something like {% assign previous = this_page_index - 1 %} isn't valid Liquid. Same goes for trying to get the next page with similar methods.
What's the ideal way to accomplish this? I've searched every way I can think of and not found anything.
You can find the code for Jekyll's own navigation on their tutorials page by sifting through their GitHub repo until you get to their section_nav_tutorials.html, but it appears the way to do it is very close to what you have.
Liquid doesn't respect you doing math directly, you have to use a filter. For you, you'd use {% assign previous = this_page_index | minus: 1 %}.
I was thinking of using the following code snippet but it does not return anything...
{% for category in site.categories %}
<li><strong>{{ category.title }}</strong></li>
{% endfor %}
I'm also using Jekyll's original category page generator plugin, but I cannot figure out how to list all the post categories (for a blog page sidebar) that are being used?
Try this：
{% for category in site.categories %}
<li><strong>{{category|first}}</strong></li>
{% endfor %}
Not sure if something has changed, but something bad happened when I used Leon's answer (seemed like the loop never ended and I got an OOM). Here is what did work for me:
{% for category in site.categories %}
{% capture category_name %}{{ category | first }}{% endcapture %}
{{category_name}}
{% endfor %}
Source is the ever-helpful https://blog.webjeda.com/jekyll-categories/
I am trying to get Page 2+ of my blog to have a different title for search engines to index.
I have read several other stackoverflow answers stating that you cannot use liquid tags in the front matter yaml. One suggested to use JS to update the title, however this will not work for me as I want the search engine to index the parsed title.
I thought there may be another way. I can perhaps create a HTML page for each of my pages. I would like to do that without having to manually add each one of my posts into each of the pages (resulting in an ongoing time consuming task each time I post a new article).
I was thinking I could make one page for 1-10, another page for 11-20, etc... Something like this:
---
title: Blog Page 2
---
{% for post in paginator.posts %}
{% if post.index > 10 %}{% if post.index <= 20 %}
<div class="post-preview">
<a href="{{ post.url | prepend: site.baseurl }}">
<h2 class="post-title"> {{ post.title }}</h2>
{{ post.excerpt }}
</a>
</div>
{% endif %}{% endif %}
{% endfor %}
It seems there is no post.index variable available. Is there anything similar I can use?
Or are there any other ways to achieve "Blog Page X" in my title?
Supposing that your head tags are in your _includes/head.html file. In the title tag just add :
{% if paginator %} - page {{ paginator.page }}{% endif %}
Your title tag now looks like this :
<title>
{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}
{%if paginator %} - page {{ paginator.page }}{% endif %}
</title>
I can't find a solution. I have three categories: tuts, news, code.
The newest post is categorized in tuts. But I want to show the last and newest post in news. I tried the following, but obviously it doesn't show anything, because if I limit the loop to the first item, which is the tuts item, the loop stops.
{% for post in site.posts limit:1 %}
{% if post.categories contains 'news' %}
NEWS</strong> › {{ post.title }}
{% endif %}
{% endfor %}
How do I show the first posting from a special category? Can I loop directly through a chosen category like this? If yes, what is the correct syntax?
{% for post in site.posts.categories.news limit:1 %}
NEWS</strong> › {{ post.title }}
{% endfor %}
Yes, it's possible to directly loop all posts for a certain category or tag.
It's just:
{% for post in site.categories['news'] limit:1 %}
{{ post.title }}
{% endfor %}
It's the same for tags, you just have to replace site.categories['news'] by site.tags['news'].
I'm creating a bird's eye view tutorial for Jekyll, to be hosted on Github pages (on my blog that runs on Jekyll). So, I want to put some code there. If I put the following:
{% for post in site.posts %}
{% if post.categories contains '<categoryname>' %}
<h2>
{{ post.title }}
</h2>
{% endif %}
{% endfor %}
(all lines after tabspaces), it doesn't render as code, rather, it executes. How do I stop it from executing and render it as code?
The {%...%} syntax used by Jekyll is part of the Liquid templating engine. To escape these tags, and so show them literally, you should use the raw tag.
You will probably want to combine this with the markdown syntax for code blocks. With Redcarpet you can use the triple backtick syntax. It doesn’t matter if you put the backticks inside the raw tags or the other way round:
{%raw%}
```
{% for post in site.posts %}
{% if post.categories contains '<categoryname>' %}
<h2>
{{ post.title }}
</h2>
{% endif %}
{% endfor %}
```
{%endraw%}
Enclose your code in backticks:
(tested with redcarpet markdown engine)
```
{% for post in site.posts %}
{% if post.categories contains '<categoryname>' %}
<h2>
{{ post.title }}
</h2>
{% endif %}
{% endfor %}
```
There are at least three options exist, taht you can use to format code in Jekyll:
highlight - Jekyll has built in
{% highlight java %}
ValidationResult validationResult = NetLicensing.LicenseeService.validate(context, licenseeNumber);
{% endhighlight %}
example: https://raw.githubusercontent.com/Labs64/netlicensing.io/gh-pages/_drafts/2010-09-16-post-template.md (see Syntax highlighting section)
backtick - GitHub style
```java
ValidationResult validationResult = NetLicensing.LicenseeService.validate(context, licenseeNumber);
```
HTML pre/code - HTML can be included in markdown as well
<pre><code>
ValidationResult validationResult = NetLicensing.LicenseeService.validate(context, licenseeNumber);
<code/></pre>