The mismatch between JSON schema validation for patternProperties and properties causes confusion

Here is the JSON schema I am working with:

{
  "title": "JSON Schema for magazine subscription",
  "type": "object",
  "properties": {
    "lab": {
      "type": "string"
    }
  },
  "patternProperties": {
    "[A-Za-z][A-Za-z_]*[A-Za-z]": {
      "type": "boolean"
    }
  },
  "required": [
    "lab"
  ]
}

I am trying to match a JSON data like this:

{
 "SP": false,
 "lab": "labri"
}

However, it failed because the value of "lab" should be a boolean according to the schema. This means that "lab" matches the patternProperties.

Does anyone have a solution for this?

PS: Sorry for my English skills

javascriptjsonjsonschema

Answer №1

To avoid matching 'lab' using regexp, one method is to craft a specific pattern that captures what you are looking for without also including 'lab'. This can be quite challenging.

Alternatively, consider implementing the following JSON schema:

{
    "title" : "JSON Schema for magazine subscriptions",
    "type" : "object",
    "properties" : {
        "magazine" : { "type" : "string" }
    },
    "additionalProperties" : { "type": "boolean" },
    "required" : [ "magazine" ]
}

This schema ensures that all properties except 'magazine' must be boolean values. It may not be easy to improve upon this solution.

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