❔ How to get specific fields from a Http GET request

dankmememachine · 2023-03-07T19:17:10.955Z

I am working with a test API for learning purposes, I am using the following snippet to actually return the request body: ``` using (var response = await client.SendAsync(request)) { response.EnsureSuccessStatusCode(); var body = await response.Content.ReadAsStringAsync(); Debug.Log(body); } ``` I get a response such as: ```{"results":[{"code":"1002227_group_013","name":"Cargo Joggers","stock":{"stockLevel":1},"price":{"currencyIso":"USD","value":39.99,"priceType":"BUY","formattedValue":"$ 39.99","type":"WHITE"},"images":[{"url":"https://lp2.hm.com/hmgoepprod?set=source[/66/07/660740532368338c273791d92e308e445a5af9c5.jpg],origin[dam],category[],type[DESCRIPTIVESTILLLIFE],res[m],hmver[2]&call=url[file:/product/style]","baseUrl":"https://image.hm.com/assets/hm/66/07/660740532368338c273791d92e308e445a5af9c5.jpg"}],"categories":[],"pk":"9461964111873","sellingAttributes":["New Arrival"],"whitePrice":{"currencyIso":"USD","value":39.99,"priceType":"BUY","formattedValue":"$ 39.99","type":"WHITE"},"articles":[{"code":"1002227013","name":"Cargo``` How could I go about getting a specific field from this output, such as the "name" or "images"?

A

Axiss•3/7/23, 7:19 PM

Typically you would deserialize that into an object that you control. Create a class that has properties that have the same names as the fields in the JSON and use either NewtonSoft or System.Text.Json to deserialze that into a class.

A

Axiss•3/7/23, 7:19 PM

Another option is using something like JsonPath to query the fields that you need. https://www.newtonsoft.com/json/help/html/QueryJsonSelectTokenJsonPath.htm

D

dankmememachineOP•3/7/23, 7:20 PM

So if I just wanted an object that held the image and name would that be possible?

A

Angius•3/7/23, 7:20 PM

await client.GetAsJsonAsync<Model>(url)

await client.GetAsJsonAsync<Model>(url)

await client.GetAsJsonAsync<Model>(url)

await client.GetAsJsonAsync<Model>(url)

Ddankmememachine So if I just wanted an object that held the image and name would that be possibl...

A

Axiss•3/7/23, 7:21 PM

Yep. You don't need to create a property for each field. Just the ones you need.

D

dankmememachineOP•3/7/23, 7:24 PM

so this is the changes:

        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

D

dankmememachineOP•3/7/23, 7:25 PM

obviously no connection yet, you mentioned JSON etc, is there a best method to deserialize?

D

dankmememachineOP•3/7/23, 7:25 PM

sorry if that doesn't make a lot of sense, i'm new to working with requests

A

Axiss•3/7/23, 7:25 PM

Look at what ZZZZZZZZ posted

D

dankmememachineOP•3/7/23, 7:26 PM

where would that fit into this code? and what should go into <Model> and (url)? the URL currently being used in the request is

https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers

https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers

https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers

https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers

A

Angius•3/7/23, 7:27 PM

Model

Model

Model

Model is the class you want to deserialize to

A

Angius•3/7/23, 7:27 PM

url

url

is the... url

A

Axiss•3/7/23, 7:27 PM

I'd need to see a bit more, but instead of

var response = await client.SendAsync(request)

var response = await client.SendAsync(request)

var response = await client.SendAsync(request)

var response = await client.SendAsync(request) it's

var response = await client.GetAsJsonAsync<ClothingAttributes>(your url here);

var response = await client.GetAsJsonAsync<ClothingAttributes>(your url here);

var response = await client.GetAsJsonAsync<ClothingAttributes>(your url here);

var response = await client.GetAsJsonAsync<ClothingAttributes>(your url here);

A

Angius•3/7/23, 7:28 PM

Assuming

client

client

client

client is an

HttpClient

HttpClient

HttpClient

HttpClient of course

D

dankmememachineOP•3/7/23, 7:29 PM

I can post the whole script, this is in a Unity project:

D

dankmememachineOP•3/7/23, 7:29 PM

using System;
using System.Collections;
using System.Collections.Generic;
using System.Net.Http;
using System.Threading.Tasks;
using UnityEngine;


public class API_Test : MonoBehaviour
{
    /*ladies_all
     *  //ladies_trousers // ladies_jeans
     *  //ladies_jacketscoats_coats
        //ladies_premium_selection_tops
     */

    /*Categories:
     * men_all
     *   //pants: men_trousers
     *  //jacket: men_blazerssuits
     *  //shirt: men_shirts */
    public string theGender;
    private async void Start() => await StartAsync(theGender);


    private async void GenerateOutfit()
    {
        if(theGender == "ladies")
        {
            await StartAsync("");
        } else
        {

        }
    }
    async Task StartAsync(string gender)
    {
        var client = new HttpClient();
        var request = new HttpRequestMessage
        {
            Method = HttpMethod.Get,
            RequestUri = new Uri($"https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers"),
            Headers =
    {
        { "X-RapidAPI-Key", "a807635214msh9feb01fd51a9cf7p19db7ajsnffb480f6b27a" },
        { "X-RapidAPI-Host", "apidojo-hm-hennes-mauritz-v1.p.rapidapi.com" },
    },
        };
        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Net.Http;
using System.Threading.Tasks;
using UnityEngine;


public class API_Test : MonoBehaviour
{
    /*ladies_all
     *  //ladies_trousers // ladies_jeans
     *  //ladies_jacketscoats_coats
        //ladies_premium_selection_tops
     */

    /*Categories:
     * men_all
     *   //pants: men_trousers
     *  //jacket: men_blazerssuits
     *  //shirt: men_shirts */
    public string theGender;
    private async void Start() => await StartAsync(theGender);


    private async void GenerateOutfit()
    {
        if(theGender == "ladies")
        {
            await StartAsync("");
        } else
        {

        }
    }
    async Task StartAsync(string gender)
    {
        var client = new HttpClient();
        var request = new HttpRequestMessage
        {
            Method = HttpMethod.Get,
            RequestUri = new Uri($"https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers"),
            Headers =
    {
        { "X-RapidAPI-Key", "a807635214msh9feb01fd51a9cf7p19db7ajsnffb480f6b27a" },
        { "X-RapidAPI-Host", "apidojo-hm-hennes-mauritz-v1.p.rapidapi.com" },
    },
        };
        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Net.Http;
using System.Threading.Tasks;
using UnityEngine;


public class API_Test : MonoBehaviour
{
    /*ladies_all
     *  //ladies_trousers // ladies_jeans
     *  //ladies_jacketscoats_coats
        //ladies_premium_selection_tops
     */

    /*Categories:
     * men_all
     *   //pants: men_trousers
     *  //jacket: men_blazerssuits
     *  //shirt: men_shirts */
    public string theGender;
    private async void Start() => await StartAsync(theGender);


    private async void GenerateOutfit()
    {
        if(theGender == "ladies")
        {
            await StartAsync("");
        } else
        {

        }
    }
    async Task StartAsync(string gender)
    {
        var client = new HttpClient();
        var request = new HttpRequestMessage
        {
            Method = HttpMethod.Get,
            RequestUri = new Uri($"https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers"),
            Headers =
    {
        { "X-RapidAPI-Key", "a807635214msh9feb01fd51a9cf7p19db7ajsnffb480f6b27a" },
        { "X-RapidAPI-Host", "apidojo-hm-hennes-mauritz-v1.p.rapidapi.com" },
    },
        };
        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Net.Http;
using System.Threading.Tasks;
using UnityEngine;


public class API_Test : MonoBehaviour
{
    /*ladies_all
     *  //ladies_trousers // ladies_jeans
     *  //ladies_jacketscoats_coats
        //ladies_premium_selection_tops
     */

    /*Categories:
     * men_all
     *   //pants: men_trousers
     *  //jacket: men_blazerssuits
     *  //shirt: men_shirts */
    public string theGender;
    private async void Start() => await StartAsync(theGender);


    private async void GenerateOutfit()
    {
        if(theGender == "ladies")
        {
            await StartAsync("");
        } else
        {

        }
    }
    async Task StartAsync(string gender)
    {
        var client = new HttpClient();
        var request = new HttpRequestMessage
        {
            Method = HttpMethod.Get,
            RequestUri = new Uri($"https://apidojo-hm-hennes-mauritz-v1.p.rapidapi.com/products/list?country=us&lang=en&currentpage=0&pagesize=30&categories=men_trousers"),
            Headers =
    {
        { "X-RapidAPI-Key", "a807635214msh9feb01fd51a9cf7p19db7ajsnffb480f6b27a" },
        { "X-RapidAPI-Host", "apidojo-hm-hennes-mauritz-v1.p.rapidapi.com" },
    },
        };
        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            ClothingAttributes clothingAttributes = new ClothingAttributes();
            Debug.Log(body);
        }
    }
}

public class ClothingAttributes{
    string name;
    string image;
}

A

Angius•3/7/23, 7:29 PM

Ah oof ouch my bones Unity

A

Angius•3/7/23, 7:29 PM

First of all,

async void

async void

async void

async void is the devil

A

Angius•3/7/23, 7:30 PM

Second, you have an API key in this code

D

dankmememachineOP•3/7/23, 7:30 PM

In the end i want to be able to click a button for male or female and put an outfit on screen generated from this H&M API

D

dankmememachineOP•3/7/23, 7:30 PM

Right, this is a free test website for messing with different APIs, this is a local hobby project for learning so is it bad to provide it here?

A

Angius•3/7/23, 7:31 PM

Someone can now make requests to this API on your behalf

A

Angius•3/7/23, 7:31 PM

Usually not the best thing to have happen

D

dankmememachineOP•3/7/23, 7:31 PM

right, well i can generate a new one after this then, like i said i'm just using this for personal learning

A

Angius•3/7/23, 7:32 PM

Regardless, it seems you are using HttpClient so my code should work

A

Angius•3/7/23, 7:32 PM

Although... I think this extension method uses System.Text.Json

A

Angius•3/7/23, 7:32 PM

Which Unity doesn't support

A

Angius•3/7/23, 7:32 PM

So you might need to go oldschool after all

A

Axiss•3/7/23, 7:33 PM

You'll need a lot more classes to get what you want, it's nested response.

A

Angius•3/7/23, 7:33 PM

$jsongen

AAngius $jsongen

M

MODiX•3/7/23, 7:33 PM

Use https://app.quicktype.io or https://json2csharp.com to generate classes from your JSON

Instantly parse JSON in any language | quicktype

Whether you're using C#, Swift, TypeScript, Go, C++ or other languages, quicktype generates models and helper code for quickly and safely reading JSON in your apps. Customize online with advanced options, or download a command-line tool.

Convert JSON to C# Classes Online - Json2CSharp Toolkit

Convert any JSON object to C# classes online. Json2CSharp is a free toolkit that will help you generate C# classes on the fly.

D

dankmememachineOP•3/7/23, 7:34 PM

Yeah haha I don't know what most of this means, why can't I use this class I made and just create new ones for each clothing item?

A

Angius•3/7/23, 7:34 PM

The class has to match the JSON

A

Angius•3/7/23, 7:34 PM

Period

D

dankmememachineOP•3/7/23, 7:34 PM

in the end i need 3 requests for 3 item types, and then need an image and their name

A

Angius•3/7/23, 7:34 PM

It can skip some properties, but the properties it has have to match

A

Angius•3/7/23, 7:35 PM

Period

D

dankmememachineOP•3/7/23, 7:35 PM

ok, so then for this object :

public class ClothingAttributes{
    string name;
    string image;
}

public class ClothingAttributes{
    string name;
    string image;
}

public class ClothingAttributes{
    string name;
    string image;
}

public class ClothingAttributes{
    string name;
    string image;
}

D

dankmememachineOP•3/7/23, 7:35 PM

are these names not correctly formatted?

A

Axiss•3/7/23, 7:35 PM

For your json, I cleaned it up a bit and generated this:

A

Axiss•3/7/23, 7:35 PM

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

    public class Price
    {
        public string currencyIso { get; set; }
        public double value { get; set; }
        public string priceType { get; set; }
        public string formattedValue { get; set; }
        public string type { get; set; }
    }

    public class Result
    {
        public string code { get; set; }
        public string name { get; set; }
        public Stock stock { get; set; }
        public Price price { get; set; }
        public List<Image> images { get; set; }
        public List<object> categories { get; set; }
        public string pk { get; set; }
        public List<string> sellingAttributes { get; set; }
        public WhitePrice whitePrice { get; set; }
    }

    public class Root
    {
        public List<Result> results { get; set; }
    }

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

    public class Price
    {
        public string currencyIso { get; set; }
        public double value { get; set; }
        public string priceType { get; set; }
        public string formattedValue { get; set; }
        public string type { get; set; }
    }

    public class Result
    {
        public string code { get; set; }
        public string name { get; set; }
        public Stock stock { get; set; }
        public Price price { get; set; }
        public List<Image> images { get; set; }
        public List<object> categories { get; set; }
        public string pk { get; set; }
        public List<string> sellingAttributes { get; set; }
        public WhitePrice whitePrice { get; set; }
    }

    public class Root
    {
        public List<Result> results { get; set; }
    }

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

    public class Price
    {
        public string currencyIso { get; set; }
        public double value { get; set; }
        public string priceType { get; set; }
        public string formattedValue { get; set; }
        public string type { get; set; }
    }

    public class Result
    {
        public string code { get; set; }
        public string name { get; set; }
        public Stock stock { get; set; }
        public Price price { get; set; }
        public List<Image> images { get; set; }
        public List<object> categories { get; set; }
        public string pk { get; set; }
        public List<string> sellingAttributes { get; set; }
        public WhitePrice whitePrice { get; set; }
    }

    public class Root
    {
        public List<Result> results { get; set; }
    }

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

    public class Price
    {
        public string currencyIso { get; set; }
        public double value { get; set; }
        public string priceType { get; set; }
        public string formattedValue { get; set; }
        public string type { get; set; }
    }

    public class Result
    {
        public string code { get; set; }
        public string name { get; set; }
        public Stock stock { get; set; }
        public Price price { get; set; }
        public List<Image> images { get; set; }
        public List<object> categories { get; set; }
        public string pk { get; set; }
        public List<string> sellingAttributes { get; set; }
        public WhitePrice whitePrice { get; set; }
    }

    public class Root
    {
        public List<Result> results { get; set; }
    }

D

dankmememachineOP•3/7/23, 7:36 PM

ok, and these append to my current code? as new objects for each of these fields in the .cs file?

A

Angius•3/7/23, 7:36 PM

If the JSON is

{
  "images": [
    {
      "url": "..."
    }
  ] 
}

{
  "images": [
    {
      "url": "..."
    }
  ] 
}

{
  "images": [
    {
      "url": "..."
    }
  ] 
}

{
  "images": [
    {
      "url": "..."
    }
  ] 
}

you can't deserialize it to

public class ClothingAttributes
{
    public string Name { get; set; }
    public string image { get; set; }
}

public class ClothingAttributes
{
    public string Name { get; set; }
    public string image { get; set; }
}

public class ClothingAttributes
{
    public string Name { get; set; }
    public string image { get; set; }
}

public class ClothingAttributes
{
    public string Name { get; set; }
    public string image { get; set; }
}

Ddankmememachine ok, and these append to my current code? as new objects for each of these fields...

A

Angius•3/7/23, 7:37 PM

You place those wherever

A

Angius•3/7/23, 7:37 PM

You send a

Get

Get

Get

Get request to the API and get a JSON string back

A

Angius•3/7/23, 7:37 PM

Then you use (ugh) Newtonsoft.Json to deserialize that JSON to the

Root

Root

Root

Root class

D

dankmememachineOP•3/7/23, 7:37 PM

ok, so the object has to match exactly to the fields of the JSON, so each section of the JSON I want to use needs to be treated like an object?

D

dankmememachineOP•3/7/23, 7:38 PM

so in the example above:

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

    public class Image
    {
        public string url { get; set; }
        public string baseUrl { get; set; }
    }

A

Angius•3/7/23, 7:38 PM

Objects need to be treated as objects, lists as lists

D

dankmememachineOP•3/7/23, 7:38 PM

this would satisfy the JSON conversion to extract the image results?

❔ How to get specific fields from a Http GET request

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