I have a list of items in an array as below:

students:
  schoolName: "Maroubra Public"
  isEnrolled: true
  details:
    - name: sam
    - name: david
    - name: daniel
    - name: terrence
    - name: sylvia
    - name: annie
    - name: rob
    - name: john

I now another list for library membership and I would like to make sure that students requested for membership are within the previous list of students.

libMembership:
  - membershipType: gold
    members:
      - name: daniel
      - name: sylvia
      - name: emmanuel

I would like to the JSON schema validation failed because the name emmanuel in libMembership.members is not present in the students.details

In order to validate in the JSON schema, I used enum and tried various ways to reference students.details dynamically but nothing seemed to have worked for me, like so:

"enum": ["$data/students/details/*/name"]

The error I have been getting like:

<class 'jsonschema.exceptions.ValidationError'> 'emmanuel' is not one of ['$data/students/details/*/name']

It seems to have only picked up the invalid name but does not identify the wildcard to reference to the student names in the details (first list)

I have a list of items in an array as below:

students:
  schoolName: "Maroubra Public"
  isEnrolled: true
  details:
    - name: sam
    - name: david
    - name: daniel
    - name: terrence
    - name: sylvia
    - name: annie
    - name: rob
    - name: john

I now another list for library membership and I would like to make sure that students requested for membership are within the previous list of students.

libMembership:
  - membershipType: gold
    members:
      - name: daniel
      - name: sylvia
      - name: emmanuel

I would like to the JSON schema validation failed because the name emmanuel in libMembership.members is not present in the students.details

In order to validate in the JSON schema, I used enum and tried various ways to reference students.details dynamically but nothing seemed to have worked for me, like so:

"enum": ["$data/students/details/*/name"]

The error I have been getting like:

<class 'jsonschema.exceptions.ValidationError'> 'emmanuel' is not one of ['$data/students/details/*/name']

It seems to have only picked up the invalid name but does not identify the wildcard to reference to the student names in the details (first list)

• jsonschema

1 Answer 1

Referencing instance data like this isn't supported out of the box with JSON Schema, however you can do it if you're in .Net by using JsonSchema.Net (my library) and its extension JsonSchema.Net.Data. You can see an example here.

If you want to play with it first, you can use my playground: https://json-everything/json-schema.