Querying categories and posts in Sanity.io using GROQ

Hi! First project w/ Sanity and since it seemed easiest (because it was the example in the tutorial 🤷‍♀️) and I thought I could modify it later I chose Blog as a template.I'm doing a site where I'm going to display different categories of handicrafts - with name/title and an image (used Post to set up this).
I've added all the different categories in Category and connected each post to the correct category.
My question is, is it possible to query on category, and how do I do that?

What exactly do you want to do? Do you want to get all categories and their posts? In GROQ that would be this query
This gets every category, and for each category it gets every

post

that references that category. This is done using the

^

parent-operator ( https://www.sanity.io/docs/groq-operators#3715ad969fce ) and the

references

-function ( https://www.sanity.io/docs/groq-functions#5759ed6ff047 ).

I will have links to each category and when I click a specific link I want to query and see all posts for that category. For example this one:

Do note that this query will also include drafts unless you explicitly exclude them with

&& !(_id in path("drafts.*"))

inside the filter-component (

[ ]

). Path: https://www.sanity.io/docs/groq-functions#0ecd1b7eac78 In:
https://www.sanity.io/docs/groq-operators#c06332116311 filter:
https://www.sanity.io/docs/how-queries-work#e9a260f5e979

In that case the first query seems like it should match. It can be extended with
and you pass in the

_id

of the category you want to find all posts for in order to only get the relevant data for that category.
A simpler version could be:

depending on if you need any information on the given category this could be extended to

dereference:
https://www.sanity.io/docs/groq-operators#dae298fc7952

Thank you! Will try it out 🙃

docs on parameters that I used: https://www.sanity.io/docs/groq-parameters

Good luck 😄