Path parameters are not correctly overriden

[axnsan12]

Hello,

According to the swagger specification, parameters can be defined both at the operation level and at the path item level, where parameters redeclared in Operation must override the ones in the path.

Redoc currently fails to handle this, and displays both parameters.

Example spec:

swagger: '2.0'
info:
  title: Path parameter test
  version: v1
paths:
  '/snippets/{id}/':
    delete:
      operationId: snippetsDelete
      description: delete method docstring
      parameters:
        - name: id
          in: path
          description: Operation-level parameter override
          required: true
          type: string
      responses:
        '204':
          description: ''
      consumes:
        - application/json
      tags:
        - snippets
    parameters:
      - name: id
        in: path
        description: Path-level parameter
        required: true
        type: integer

Result:

If you paste the example on https://editor.swagger.io/, you will see that it is handled correctly.

[RomanHotsiy]

@axnsan12 good catch! thanks. Will be fixed in the upcoming release