python-schematics的使用

2017-01-01 22:56
  • schematics代替model层的功能
  • schematics自动的字段有验证功能
from schematics.models import Model
from schematics.types import StringType, URLType
import json
class Person(Model):
     name = StringType(required=True) #不能为空
     website = URLType()
person = Person({'name':'sss',
                'website': 'http://soundcloud.com/joestrummer'})
person.name=u"哈哈"
js = json.dumps(person.to_primitive())
print(js)
f = person.validate() ##验证字段是否正确,如果不正确会报错,如果正确返回的就是none
print(f)
  • 列表嵌套字典
    • 你也可以嵌套其他的model层
from schematics.models import Model
from schematics.types import StringType, IntType
from schematics.types.compound import ListType,MultiType
class Person(Model):
    mls = ListType(MultiType())
    shi = StringType()
    code = IntType()
mls_test = Person({'mls': [{
     'en_US': 'Hello, world!',
    'fr_FR': 'Bonjour tout le monde!',
    'es_MX': '¡Hola, mundo!',
     }],'shi':'kun','code':0})
print(mls_test.mls[0]["en_US"])
  • 字典
from schematics.models import Model
from schematics.types import StringType, IntType,MultilingualStringType
class Person(Model):
    mls = MultilingualStringType()
    shi = StringType()
    code = IntType()
mls_test = Person({'mls': {
     'en_US': 'Hello, world!',
    'fr_FR': 'Bonjour tout le monde!',
    'es_MX': '¡Hola, mundo!',
     },'shi':'kun','code':0})
print(mls_test.mls["en_US"])

更多schematics高级的用法

  • jsonschema 是验证json的正确性
from jsonschema import validate

schema = {
    "type" : "object",
    "properties" : {
        "price" : {"type" : "number"},
        "name" : {"type" : "string"},
        "list":{"maxItems":2},
        "address":{'regex':'bj'},
    },
}

validate({"name" : "Eggs", "price" : "dfda",'list':[1,5],'address':'bj-jiuxianqiao'}, schema)