Use of Jsonmodel in IOS

Think of your JSON data like this:

{"id": "Ten", "Country": "Germany", "Dialcode": $, "Isineurope": true}

• Create a Objective-c class for your data model, inherited from Jsonmodel.
• The keys in JSON are declared as attributes in the. h file:

#import "JSONModel.h" @interface Countrymodel:jsonmodel@property (assign, nonatomic) int id; @property (strong, nonatomic) nsstring* country; @property (strong, nonatomic) nsstring* Dialcode; @property (assign, nonatomic) BOOL Isineurope; @end

There is no need to do anything in the. m file.

• Initialize your model with data:

#import "CountryModel.h" ... nsstring* JSON = (fetch here JSON from the Internet) ... nserror* err = nil; countrymodel* country = [[Countrymodel alloc] Initwithstring:json error:&err];

For example, name auto-match.

{  "id": "123",  "name": "Product name",  "price": 12.95}

@interface Productmodel:jsonmodel@property (assign, nonatomic) int id; @property (strong, nonatomic) nsstring* name; @pro Perty (assign, nonatomic) float price; @end @implementation Productmodel@end

Model nesting (model contains other models)

{  "order_id": 104,  "Total_price": 13.45,  "product": {    "id": "123",    "name": "Product Name",    " Price ": 12.95  }} @interface Ordermodel:jsonmodel@property (assign, nonatomic) int order_id; @property (Assign, nonatomic) float Total_price; @property (Strong, nonatomic) productmodel* product; @end @implementation Ordermodel@end

Model Collection

{  "order_id": 104,  "Total_price": 103.45,  "Products": [    {      "id": "123",      "name": " Product #1 ",      " price ": 12.95    },    {      " id ":" 137 ",      " name ":" Product #2 ",      " price ": 82.95    }  ]}

@protocol productmodel@end@interface Productmodel:jsonmodel@property (assign, nonatomic) int id; @property (strong, nonatomic) nsstring* name; @property (assign, nonatomic) float price; @end @implementation Productmodel@end@interface Ordermodel:jsonmodel@property (assign, nonatomic) int order_id; @property (assign, nonatomic) float total_price;@ Property (Strong, nonatomic) nsarray<productmodel>* products; @end @implementation Ordermodel@end

Note: The angle brackets NSArray are followed by a protocol. This is not a concept with objective-c native generics. They will not clash, but for Jsonmodel, the agreement must be declared in one place.

Key mappings

{  "order_id": 104,  "Order_Details": [    {      "name": "Product#1",      "price": {        "USD": 12.95      }    }  ]}  @interface Ordermodel:jsonmodel@property (assign, nonatomic) int id; @property (assign, nonatomic) float price; @property (Strong, Nonatomic) nsstring* productName; @end @implementation ordermodel+ (jsonkeymapper*) keymapper{  return [[Jsonkeymapper alloc] initwithdictionary:@{    @ "order_id": @ "id",    @ "Order_details.name": @ "ProductName",    @ "Order_ DETAILS.PRICE.USD ": @" Price "  }];} @end

Set Global key mappings (applies to all model)

[Jsonmodel setglobalkeymapper:[    [Jsonkeymapper alloc] initwithdictionary:@{      @ "item_id": @ "id",      @ " Item.name ": @" ItemName "   }]];

Set the underline to automatically turn the hump

{  "order_id": 104,  "order_product": @ "product#1",  "Order_price": 12.95}

@interface Ordermodel:jsonmodel@property (assign, nonatomic) int orderId; @property (assign, nonatomic) float Orderprice ; @property (Strong, nonatomic) nsstring* orderproduct; @end @implementation ordermodel+ (jsonkeymapper*) keyMapper{  return [Jsonkeymapper mapperfromunderscorecasetocamelcase];} @end

Optional attribute (meaning that this property can be null or empty)

{  "id": "123",  "name": null,  "price": 12.95}

@interface Productmodel:jsonmodel@property (assign, nonatomic) int id; @property (strong, nonatomic) nsstring< optional>* name; @property (assign, nonatomic) float price; @property (Strong, nonatomic) nsnumber<optional>* UUID; @end @implementation Productmodel@end

Ignore attributes (that is, ignore this property completely)

{  "id": "123",  "name": null} @interface Productmodel:jsonmodel@property (assign, nonatomic) int id; @property ( Strong, nonatomic) nsstring<ignore>* customproperty; @end @implementation Productmodel@end

Set all properties to be optional (all property values can be empty)

@implementation productmodel+ (BOOL) propertyisoptional: (nsstring*) propertyname{  return YES; @end

Using the HTTP request that comes with Jsonmodel

Add extra headers[[jsonhttpclient requestheaders] setvalue:@ "MySecret" forkey:@ "Authorizationtoken"];//make post, Get requests[jsonhttpclient postjsonfromurlwithstring:@ "Http://mydomain.com/api"                                   params:@{@ "postParam1": @ " Value1 "}                               completion:^ (id json, Jsonmodelerror *err) {                                   //check err, Process json ...                               }];

Convert model to Dictionary or JSON-formatted string

productmodel* pm = [[ProductModel alloc] initwithstring:jsonstring error:nil];p m.name = @ "Changed name";//convert to Dict ionarynsdictionary* Dict = [pm Todictionary];//convert to textnsstring* string = [pm toJSONString];

Conversion of custom data

@implementation Jsonvaluetransformer (Customtransformer)-(NSDate *) nsdatefromnsstring: (nsstring*) string {    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];    [Formatter Setdateformat:apidateformat];    return [Formatter datefromstring:string];} -(NSString *) Jsonobjectfromnsdate: (NSDate *) Date {    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];    [Formatter Setdateformat:apidateformat];    return [Formatter stringfromdate:date];} @end

Custom handling of specified properties

@interface Productmodel:jsonmodel@property (assign, nonatomic) int id; @property (strong, nonatomic) nsstring* name; @pro Perty (assign, nonatomic) float price; @property (Strong, nonatomic) Nslocale *locale; @end @implementation productmodel// Convert and assign the locale property-(void) setlocalewithnsstring: (nsstring*) string {    Self.locale = [Nslocale Localewithlocaleidentifier:string];} -(NSString *) Jsonobjectforlocale {    return self.locale.localeIdentifier;} @end

Custom JSON Checksum

@interface Productmodel:jsonmodel@property (assign, nonatomic) int id; @property (strong, nonatomic) nsstring* name; @pro Perty (assign, nonatomic) float price; @property (Strong, nonatomic) Nslocale *locale; @property (Strong, nonatomic) Nsnumb Er <Ignore> *minnamelength; @end @implementation productmodel-(BOOL) Validate: (nserror *__autoreleasing *) Error {    BOOL valid = [Super Validate:error];    if (Self.name.length < Self.minNameLength.integerValue) {        *error = [Nserror errorwithdomain:@ "me.mycompany.com "Code:1 Userinfo:nil];        valid = NO;    }    return valid;} @end

Use of Jsonmodel in IOS