kvc

kvc 字典转模型

- (void)setValuesForKeysWithDictionary:(NSDictionary *)keyedValues

//在赋值的过程中，如果发现未声明的Key  会自动调用此方法来处理未声明的key
- (void)setValue:(id)value forUndefinedKey:(NSString *)key
{
    if ([key isEqualToString:@"id"]) {
        self.itemId = value;
    } else if([key isEqualToString:@"description"]){
        self.itemDescription = value;
    }else{
        [super setValue:value forUndefinedKey:key];
    }
}

//赋值
- (void)setValue:(id)value forKey:(NSString *)key
{
    if ([key isEqualToString:@"reviews"]) {
        for (NSMutableDictionary *reviewArrayDic in value) {
            Review *thisReview = [[Review alloc] initWithDictionary:reviewArrayDic];
            [self.reviews addObject:thisReview];
        }
    }else{
        [super setValue:value forKey:key];
    }
}