Category page - need a page with a link to all posts of a category

Help
1

I’m implementing categories/tags with some success. I have followed the steps at: https://kylewbanks.com/blog/creating-category-pages-in-jekyll-without-plugins and it seems that the pages are now being rendered under /blog/my-category/2019/06/19/mypost.html - which is good.

However, I’d like to have a list of categories at /blog/category/index.html

I’ve created a default.html page in my _category page, but am still seeing the webserver (WEBrick/1.4.2 (Ruby/2.6.3/2019-04-16)) showing the directories for the years and then the months and then the date that the post was created. Is there something I’m missing?

2

do you have repo we can look at?

do you mean in your category directory? doesn’t make sense.

3

Sure - here’s my repo - https://github.com/kabads/kabads.github.io/tree/Addingcategories

I’d like to link from the home page to a page at /blog/category/sysadmin.html that lists all the pages that are in that category/collection. Thanks.

4

Maybe you can have a look here:

Replacing tag with category it may work.

6

What I mean is, I think I know how to iterate over the categories, I just don’t know how to get jekyll to create the categories page(s) (i.e. /blog/category/sport, /blog/categiory/politics etc.). Once I have that page, I think I can list out the posts in that category there.

7

For starters your config is incorrect. You defined a collection called categories but your collection folder is named _category. Jekyll doesn’t know what to do with that folder and it’s contents which is why you aren’t getting any /categories/xxx pages in your _site folder.

Either rename _category to _categories or change the config to

collections:
  category:
    output: true

Doing either will build the category pages. But it looks like you have some Liquid errors in your _layouts/home.html file you’ll need to sort out. As well as a post.categories loop in your post.html layout. You used {{ }} in places where you need to use {% %}.

8

@mmistakes - thanks - I used categories as a collection instead of category as all the front matter is as ‘categories’ - instead of going through each post and changing it (although I could do that through a regex and sed).

As for the site.categories loop in posts - I’ll fix that. I need to read more about liquid. Thanks for your help.

9

So, I’ve made some progress and have the categories/index.html and each page rendering for each category.

I’m trying to iterate over the posts with each category - with contains page.title - however, the page.title is upcase and so the comparison doesn’t match (returning no posts). So, I tried to pipe downcase:

    {% for post in site.posts %}
    {% if post.categories contains page.title | downcase %}
    <li>{{ post.title }}</li>
    {% endif %}
    {% endfor %}

But get an error:

Liquid Warning: Liquid syntax error (line 27): Expected end_of_string but found pipe in "post.categories contains page.title | downcase" in /_layouts/categories.html

How can I run downcase on page.title in this context?

10

OK, a little more experimenting, and I manage to answer my own question, but it would be handy if anyone could follow up if this is a super clumsy way of solving the problem. I created a variable and then referenced that - however, I would expect the pipe to work in curly braces.

    {% assign category = page.title|downcase %}

    {% for post in site.posts %}
    {% if post.categories contains {{category}}  %}
    <li>{{ post.title }}</li>
    {% endif %}
    {% endfor %}

Is this something that could be developed further so that pipe downcase works in this condition?