GoLang JSON payload preparation with multiple data - json

Question

I want to create JSON payload in given below format. I want a code or pattern that prepares the given format.
{
transactiontype: 'DDDDD'
emailType: 'QQQQQQ'
template: {
templateUrl: 'xry.kk'
templateName: 'chanda'
}
date: [
{
UserId: 1
Name: chadnan
},
{
UserId: 2
Name: kkkkkk
}
]
}

Answer 1

Hope this helps :
type Template struct {
TemplateURL string `json:"templateUrl" param:"templateUrl"`
TemplateName string `json:"templateName" param:"templateName"`
}
type Date struct {
UserId string `json:"UserId" param:"UserId"`
Name string `json:"Name" param:"Name"`
}
type NameAny struct {
*Template
TransactionType string `json:"transactiontype" param:"transactiontype"`
EmailType string `json:"emailType" param:"emailType"`
Data []Date `json:"date" param:"date"`
}
Data, _ := json.Marshal(NameAny)
Json(c, string(Data))(w, r)

Answer 2

You can use an online tool to convert a json into a valid Go struct: https://mholt.github.io/json-to-go/
Given your JSON, the Go struct is:
type AutoGenerated struct {
Transactiontype string `json:"transactiontype"`
EmailType string `json:"emailType"`
Template struct {
TemplateURL string `json:"templateUrl"`
TemplateName string `json:"templateName"`
} `json:"template"`
Date []struct {
UserID int `json:"UserId"`
Name string `json:"Name"`
} `json:"date"`
}
After the conversion, use the json.Marshal (Go Struct to JSON) and json.Unmarshal (JSON to Go Struct)
Complete example with your data: https://play.golang.org/p/RJuGK4cY1u-

Answer 3

// Transaction is a struct which stores the transaction details
type Transaction struct {
TransactionType string `json:"transaction_type"`
EmailType string `json:"email_type"`
Template Template `json:"template"`
Date []Date `json:"date"`
}
//Template is a struct which stores the template details
type Template struct {
TemplateURL string `json:"template_url"`
TemplateName string `json:"template_name"`
}
// Date is a struct which stores the user details
type Date struct {
UserID int `json:"user_id"`
Name string `json:"name"`
}
Above given structs are the correct data structure for storing your json body you can use json decoder for perfectly storing the data into struct
func exampleHandler(w http.ResponseWriter, r *http.Request) {
var trans Transaction
decoder := json.NewDecoder(r.Body)
err := decoder.Decode(&trans)
if err != nil {
log.Println(err)
}
}