-(void)createPostDateWithDic{
    NSArray * arr = [self.requestDictionary allKeys];
    for (int i = 0; i < arr.count; i ++) {
        if ([self.requestDictionary objectForKey:[arr objectAtIndex:i]] != nil) {
            [self.mainRequest setPostValue:[self.requestDictionary objectForKey:[arr objectAtIndex:i]] forKey:[arr objectAtIndex:i]];
        }
    };
}

-(void)createPostDateWithModel{
    unsigned int outCount, i;
    objc_property_t *properties = class_copyPropertyList([self.requestModel class], &outCount);
    for (i=0; i<outCount; i++) {
        objc_property_t property = properties[i];
        NSString * key = [[NSString alloc]initWithCString:property_getName(property)  encoding:NSUTF8StringEncoding];
        id value = [self.requestModel valueForKey:key];
        if (value != nil) {
            [self.mainRequest setPostValue:value forKey:key];
        }
    }
}