Karate - how to use param from response to test child endpoints - testing

Question

I have a parent URL that returns an array of objects with id and slug, this is dynamically generated because it depends of the user (test env). After getting this data, how can I dynamically call each element object from an array and make another request ?
Example :
Scenario: parent
Given url 'posts'
Then Status 200
* assert response.status == true
Example url/posts returns a data of array of objects :
[
{id: 6, slug: 'my-post-6'},
{id: 23, slug: 'example-test-23'},
{id: 133, slug: 'another-test-133'},
]
Then I want to make a get request to every object like so : url 'posts/' data.slug
How can I do this ?
GET url 'posts/my-post-6'
// Validate schema
GET url 'posts/example-test-23'
// Validate schema
GET url 'posts/another-test-133'
// Validate schema

Answer 1

Karate's call keyword auto-loops over a JSON array of objects. Refer the docs: https://github.com/karatelabs/karate#data-driven-features
You can try this simple example:
Feature:
Scenario:
* def data = [{ slug: 'one'}, { slug: 'two'}]
* call read('#called') data
#called #ignore
Scenario:
* url 'https://httpbin.org/anything'
* path slug
* method get
This is getting improved in future versions, refer: https://github.com/karatelabs/karate/issues/1905 (available now in 1.3.0.RC2)