testing gin deep struct checking

gistfile1.txt

save this as main.go

###

package main

import (
	"github.com/gin-gonic/gin"
	"net/http"
)

func main() {

	type Item struct {
		RequiredField int    `json:"required_field" binding:"required"`
		OptionalField string `json:"optional_field"`
	}

	type Test struct {
		Collection    []*Item `json"collection" binding:"required"`
		RequiredField int     `json:"required_field"`
		OptionalField struct {
			RequiredSubField string `json:"required_sub_field" binding:"required"`
			OptionalSubField string `json:"optional_sub_field"`
		} `json:"optional_field"`
	}

	r := gin.Default()
	r.POST("/test", func(c *gin.Context) {

		var test Test
		if c.Bind(&test) {
			c.String(http.StatusOK, "JSON OK")
		} else {
			c.String(http.StatusInternalServerError, "JSON NOTOK")
		}
	})
	r.Run(":9001")
}

###

then run it: go run main.go

then post this json to http://localhost:9001/test


{
    "required_field": 10,
  "optional_field": {
    "required_sub_field" : "hi",
    "optional_sub_field": "more"
  },
  "collection" : [
    {
     	"optional_field" : "test"
   	}
  ]
}

It wil return a message saying the JSON is OK, while it is not.