How can I make struct in go for object having array of object inside it? - vue.js

Question

I am using Vuejs on the frontend and Go language on the backend. My data variable has data in the following format.
var data = {
software_type: this.$props.selected,
selected_solutions: this.fromChildChecked,
};
By doing console.log(data)in frontend, I get following output.
On the backend side, I have struct on this format :
type Technology struct {
ID primitive.ObjectID `json:"_id,omitempty" bson:"_id,omitempty"`
SoftwareType string `json:"software_type" bson:"software_type"`
SelectedSolutions struct {
selectedSolutions []string
} `json:"selected_solutions" bson:"selected_solutions"`
}
I am quite sure about the problem that I am having and it might be due to the difference with the format of data that I am sending and the struct that I have made.
I am using MongoDB as a database.
By submitting the form, data comes to DB in the following format, which means, I am getting an empty object for selected_solutions.
{
"_id":{"$oid":"5f5a1fa8885112e153b5a890"},
"software_type":"Cross-channel Campain Mangment Software",
"selected_solutions":{}
}
This is the format that I expect to be on DB or something similar to below.
{
"_id":{"$oid":"5f5a1fa8885112e153b5a890"},
"software_type":"Cross-channel Campain Mangment Software",
"selected_solutions":{
Adobe Campaign: ["Business to Customer (B2C)", "Business to Business (B2B)"],
Marin Software: ["E-Government", "M-Commerce"],
}
}
How can I change struct to make it compatible with the data that I am trying to send? Thank you in advance for any help.
EDIT: This is how I am submitting data.
postUserDetails() {
var data = {
software_type: this.$props.selected,
selected_solutions: this.fromChildChecked,
};
console.log(data);
const requestOptions = {
method: "POST",
headers: { "Content-Type": "application/x-www-form-urlencoded" },
body: JSON.stringify(data),
};
fetch("http://localhost:8080/technology", requestOptions)
.then((response) => {
response.json().then((data) => {
if (data.result === "success") {
//this.response_message = "Registration Successfull";
console.log("data posted successfully");
} else if (data.result === "er") {
// this.response_message = "Reagestraion failed please try again";
console.log("failed to post data");
}
});
})
.catch((error) => {
console.error("error is", error);
});
},
mounted() {
this.postUserDetails();
},
This is the function for backend controller.
//TechnologyHandler handles checkbox selection for technology section
func TechnologyHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("content-type", "application/json")
w.Header().Add("Access-Control-Allow-Credentials", "true")
var technologyChoices model.Technology
//var selectedSolution model.Selected
//reads request body and and stores it inside body
body, _ := ioutil.ReadAll(r.Body)
//body is a json object, to convert it into go variable json.Unmarshal()is used ,
//which converts json object to User object of go.
err := json.Unmarshal(body, &technologyChoices)
var res model.TechnologyResponseResult
if err != nil {
res.Error = err.Error()
json.NewEncoder(w).Encode(res)
return
}
collection, err := db.TechnologyDBCollection()
if err != nil {
res.Error = err.Error()
json.NewEncoder(w).Encode(res)
return
}
_, err = collection.InsertOne(context.TODO(), technologyChoices)
if err != nil {
res.Error = "Error While Creating Technology choices, Try Again"
res.Result = "er"
json.NewEncoder(w).Encode(res)
return
}
res.Result = "success"
json.NewEncoder(w).Encode(res)
return
}

Answer 1

Based on your database structure, selected_solutions is an object containing string arrays:
type Technology struct {
ID primitive.ObjectID `json:"_id,omitempty" bson:"_id,omitempty"`
SoftwareType string `json:"software_type" bson:"software_type"`
SelectedSolutions map[string][]string `json:"selected_solutions" bson:"selected_solutions"`
}