parsing the json reponse

[Gaurav Swarankar]

i want to parse the json and setting the response into model class. but i stucked here. any help

var data = json.decode(response.body);
//var rest = data["NearbySalons_deals"];
//print(rest);

var rest = data['NearbySalons_deals'];
print(rest);

var offersjson = rest['Offers'] as List;
print(offersjson);


  list = rest<NewTabDetailsModel>((json) => NewTabDetailsModel.fromJson(json));

My Model class ::

import 'package:artistry/main.dart';
import 'package:flutter/material.dart';

class NewTabDetailsModel {
  int vendorID;
  String vendorName;
  String vendorDescription;
  String contactNo;
  String area;
  String address;
  double latitude;
  double longitude;
  int avgRating;
  int ratingCount;
  String logoURL;
  List<String> images;
  String categories;
  String openTime;
  String closeTime;
  String createdAt;
  String updatedAt;
  List<Offers> offers;

  NewTabDetailsModel(
      {this.vendorID,
        this.vendorName,
        this.vendorDescription,
        this.contactNo,
        this.area,
        this.address,
        this.latitude,
        this.longitude,
        this.avgRating,
        this.ratingCount,
        this.logoURL,
        this.images,
        this.categories,
        this.openTime,
        this.closeTime,
        this.createdAt,
        this.updatedAt,
        this.offers});

  NewTabDetailsModel.fromJson(Map<String, dynamic> json) {
    vendorID = json['VendorID'];
    vendorName = json['VendorName'];
    vendorDescription = json['VendorDescription'];
    contactNo = json['ContactNo'];
    area = json['Area'];
    address = json['Address'];
    latitude = json['Latitude'];
    longitude = json['Longitude'];
    avgRating = json['AvgRating'];
    ratingCount = json['RatingCount'];
    logoURL = json['LogoURL'];
    images = json['Images'].cast<String>();
    categories = json['Categories'];
    openTime = json['OpenTime'];
    closeTime = json['CloseTime'];
    createdAt = json['CreatedAt'];
    updatedAt = json['UpdatedAt'];
    if (json['Offers'] != null) {
      offers = new List<Offers>();
      json['Offers'].forEach((v) {
        offers.add(new Offers.fromJson(v));
      });
    }
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['VendorID'] = this.vendorID;
    data['VendorName'] = this.vendorName;
    data['VendorDescription'] = this.vendorDescription;
    data['ContactNo'] = this.contactNo;
    data['Area'] = this.area;
    data['Address'] = this.address;
    data['Latitude'] = this.latitude;
    data['Longitude'] = this.longitude;
    data['AvgRating'] = this.avgRating;
    data['RatingCount'] = this.ratingCount;
    data['LogoURL'] = this.logoURL;
    data['Images'] = this.images;
    data['Categories'] = this.categories;
    data['OpenTime'] = this.openTime;
    data['CloseTime'] = this.closeTime;
    data['CreatedAt'] = this.createdAt;
    data['UpdatedAt'] = this.updatedAt;
    if (this.offers != null) {
      data['Offers'] = this.offers.map((v) => v.toJson()).toList();
    }
    return data;
  }
}

class Offers {
  int offerID;
  int vendorID;
  int categoryID;
  String offerTitle;
  String description;
  int offerPercentage;
  String fromDateTime;
  String toDateTime;
  int actualPrice;
  int offerPrice;
  int status;
  int qty;
  String createdAt;
  String updatedAt;

  Offers(
      {this.offerID,
        this.vendorID,
        this.categoryID,
        this.offerTitle,
        this.description,
        this.offerPercentage,
        this.fromDateTime,
        this.toDateTime,
        this.actualPrice,
        this.offerPrice,
        this.status,
        this.qty,
        this.createdAt,
        this.updatedAt});

  Offers.fromJson(Map<String, dynamic> json) {
    offerID = json['OfferID'];
    vendorID = json['VendorID'];
    categoryID = json['CategoryID'];
    offerTitle = json['OfferTitle'];
    description = json['Description'];
    offerPercentage = json['OfferPercentage'];
    fromDateTime = json['FromDateTime'];
    toDateTime = json['ToDateTime'];
    actualPrice = json['ActualPrice'];
    offerPrice = json['OfferPrice'];
    status = json['Status'];
    qty = json['Qty'];
    createdAt = json['CreatedAt'];
    updatedAt = json['UpdatedAt'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['OfferID'] = this.offerID;
    data['VendorID'] = this.vendorID;
    data['CategoryID'] = this.categoryID;
    data['OfferTitle'] = this.offerTitle;
    data['Description'] = this.description;
    data['OfferPercentage'] = this.offerPercentage;
    data['FromDateTime'] = this.fromDateTime;
    data['ToDateTime'] = this.toDateTime;
    data['ActualPrice'] = this.actualPrice;
    data['OfferPrice'] = this.offerPrice;
    data['Status'] = this.status;
    data['Qty'] = this.qty;
    data['CreatedAt'] = this.createdAt;
    data['UpdatedAt'] = this.updatedAt;
    return data;
  }
}

[Suzuki Tomohiro]

Any error message?

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[Suzuki Tomohiro]

Good. Do you know which line of your code throw Th e exception?

Paste the stack trace as text.

On Tue, Jun 9, 2020 at 07:07 Gaurav Swarankar <gauravsw...@gmail.com> wrote:

[Suzuki Tomohiro]

What is unclear about stacktrace?

On Thu, Jun 11, 2020 at 06:14 Gaurav Swarankar <gauravsw...@gmail.com> wrote:

How to use stack trace. I see most of the times but i don't know

[Suzuki Tomohiro]

It gives the function call relationship when an exception happens. You can read it to identify why it happened.

On Thu, Jun 11, 2020 at 08:31 Gaurav Swarankar <gauravsw...@gmail.com> wrote:

How to use this? What is the use of this?

[Gaurav Swarankar]

Got it. 

But how to use this?? Want to know the practical use

[Suzuki Tomohiro]

Read it and identify which line of your code caused the exception.