[Golang][go-gin-server]can not use the param of the path

Created by: kemokemo

Description

The path with param does not be generated properly. ex) /pet/{petId}

openapi-generator version

3.3.0-SNAPSHOT (master)

OpenAPI declaration file content or url

extracted_petstore.yaml

openapi: 3.0.0
servers:
  - url: 'http://petstore.swagger.io/v2'
info:
  description: >-
    This is a sample server Petstore server. For this sample, you can use the api key
    `special-key` to test the authorization filters.
  version: 1.0.0
  title: OpenAPI Petstore
  license:
    name: Apache-2.0
    url: 'http://www.apache.org/licenses/LICENSE-2.0.html'
tags:
  - name: pet
    description: Everything about your Pets
paths:
  '/pet/{petId}':
    get:
      tags:
        - pet
      summary: Find pet by ID
      description: Returns a single pet
      operationId: getPetById
      parameters:
        - name: petId
          in: path
          description: ID of pet to return
          required: true
          schema:
            type: integer
            format: int64
      responses:
        '200':
          description: successful operation
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/Pet'
            application/json:
              schema:
                $ref: '#/components/schemas/Pet'
        '400':
          description: Invalid ID supplied
        '404':
          description: Pet not found
      security:
        - api_key: []
externalDocs:
  description: Find out more about Swagger
  url: 'http://swagger.io'
components:
  requestBodies:
    Pet:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Pet'
        application/xml:
          schema:
            $ref: '#/components/schemas/Pet'
      description: Pet object that needs to be added to the store
      required: true
  schemas:
    Pet:
      title: a Pet
      description: A pet for sale in the pet store
      type: object
      required:
        - name
        - photoUrls
      properties:
        id:
          type: integer
          format: int64
        category:
          $ref: '#/components/schemas/Category'
        name:
          type: string
          example: doggie
        photoUrls:
          type: array
          xml:
            name: photoUrl
            wrapped: true
          items:
            type: string
        tags:
          type: array
          xml:
            name: tag
            wrapped: true
          items:
            $ref: '#/components/schemas/Tag'
        status:
          type: string
          description: pet status in the store
          enum:
            - available
            - pending
            - sold
      xml:
        name: Pet

Command line used for generation

generate -i extracted_petstore.yaml -g go-gin-server -o go-gin-server

Steps to reproduce

Related issues/PRs

Issue #1047 (closed) PR #1048

Suggest a fix/enhancement

routers.go generated by the current master.

var routes = Routes{
	{
		"Index",
		"GET",
		"/v2/",
		Index,
	},

	{
		"GetPetById",
		strings.ToUpper("Get"),
		"/v2/pet/{petId}",
		GetPetById,
	},
}

This code should be below:

var routes = Routes{
	{
		"Index",
		"GET",
		"/v2/",
		Index,
	},

	{
		"GetPetById",
		strings.ToUpper("Get"),
		"/v2/pet/:petId",
		GetPetById,
	},
}