convertor

README

go-request-to-null-object-dto

Object from JSON to DTO (NullObject's)

This library helps to simply fill Nullable structure from json object. It can be used for example if we want to use structure without pointers after request in golang.

How to use

ConvertToDTO(jsonObject interface{}, dtoObject interface{}) error cant convert any json request to DTO without pointers.

• Create JSON object

type SomeRequest struct {
    Data  string `json:"data"`  
    Value int64  `json:"value"`  
}

• Create DTO object:
  • Create identically (recommended used same fields order)
  • Mark fields with the tag "dto" with the same values as from json structure

type SomeDTO struct {
    MyData  string `dto:"data"`    
    MyValue string `dto:"value"`    
}

• Use it by using converting method:

ConvertToDTO(jsonObject, &dtoObject)
fmt.Println(dtoObject.Data.String)

Nested structures using

Json structure should be the same.

type SomeDTO struct {
    MyData OtherStruct `dto:"data"`    
}

Also can be nullable

type SomeDTO struct {
    MyData *OtherStruct `dto:"data"`    
}

Arrays using

type SomeDTO struct {
    MyData []sql.NullString `dto:"data"`    
}

Also with structures

type SomeDTO struct {
    MyData []OtherStruct `dto:"data"`    
}

Documentation

Index

• Constants
• func ConvertToDTO(jsonObject interface{}, dtoObject interface{}) error

Constants

const (
	FieldIndex = 0
	ValidIndex = 1
)

Functions

func ConvertToDTO

func ConvertToDTO(jsonObject interface{}, dtoObject interface{}) error