[BUG] validation constraints for parameters in request body of form request are not generated (at least with Spring Boot generator)

[oliverkuntze]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

At least for the Spring Boot code generator:

Validation constraints like minLength, maxLength, pattern defined for parameters within request bodies of
application/x-www-form-urlencoded content are not generated in the API interfaces.

The formParams.mustache is missing the beanValidationBodyParams template call (as opposed for example to the regular bodyParams.mustache).

I have provided a PR that fixes this problem for the Spring Boot generator -> #21749

Please let me know if there is anything more I can / have to do to get this fix included in the next release ;-)

openapi-generator version

7.14.0

OpenAPI declaration file content or url

openapi: 3.0.1
info:
  title: Test form
  version: 1.0.0
servers:
  - url: https://where.am.i
paths:
  /add:
    post:
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
                - id
                - quantity
              properties:
                name:
                  type: string
                  pattern: '^[[:print:]]+$'
                quantity:
                  type: integer
                  minimum: 1
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: boolean

Generation Details

Steps to reproduce

Related issues/PRs

Suggest a fix

I fixed this in #21749

[oliverkuntze]

Fix included in 7.16.0