JSON2Mantle：用 JSON 文件生成 Mantle model 的小工具

Mantle 是一个构建 model 层的库。然而通过 Mantle 偷懒的同时，还是得自己把 JSON 里的字段写成 Objective-C 文件。为了进一步偷懒，我写了一个 Python 小工具：输入 xxx.json 自动生成相应的 Mantle model 文件。

先放地址：https://github.com/sutar/JSON2Mantle

安装：

$ sudo pip install JSON2Mantle

Features

自动转换 property 名称

var_name 自动转换成 varName。
Objective-C 中的保留字进行转换。比如 id 会转换成 modelId。

（半）自动类型映射

目前能处理 NSInteger, NSString, BOOL 等基本类型。下一步可能会对 NSURL 等类型进行检测。

支持多级 JSON 字典 (nested)

例如如下的user数据：

{
  "id": 10,
  "name": "Clementina DuBuque",
  "username": "Moriah.Stanton",
  "email": "Rey.Padberg@karina.biz",
  "address": {
    "street": "Kattie Turnpike",
    "suite_number": "Suite 198",
    "city": "Lebsackbury",
    "zipcode": "31428-2261",
    "geo": {
      "lat": "-38.2386",
      "lng": "57.2232"
    }
  },
  "cell_phone": "024-648-3804",
  "website": "ambrose.net",
  "company": {
    "name": "Hoeger LLC",
    "catch_phrase": "Centralized empowering task-force",
    "bs": "target end-to-end models"
  }
}

只要一次执行，就能生成UserModel AddressModel GeoModel 和 CompanyModel 四个 models。

产生的UserModel.h文件如下：

#import <Mantle.h>
#import "AddressModel.h"
#import "CompanyModel.h"

@interface UserModel : MTLModel <MTLJSONSerializing>

@property (nonatomic, copy) NSString *username;
@property (nonatomic, copy) NSString *website;
@property (nonatomic, copy) NSString *email;
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) NSInteger modelId;
@property (nonatomic, strong) AddressModel *address;
@property (nonatomic, strong) CompanyModel *company;
@property (nonatomic, copy) NSString *cellPhone;

@end

只要执行一句：

$ json2mantle user.json output

OK。介绍完毕，再放下地址： https://github.com/sutar/JSON2Mantle

欢迎 star。

zenghaojim33

2015 年 3 月 12 日

你好，我用你tests目录下的top10.json做测试报错了，请问正确的使用姿势是什么

haodeiMac:tests pro$ json2mantle json2mantle top10.json class --prefix XYZ --author "John Smith"
Traceback (most recent call last):
File "/usr/local/bin/json2mantle", line 9, in <module>
load_entry_point('JSON2Mantle==0.0.6', 'console_scripts', 'json2mantle')()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 357, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 2394, in load_entry_point
return ep.load()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 2108, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
ImportError: No module named json2mantle.cli