我正在尝试使用 from_json 方法构建文档对象。object.save() 不会抛出错误,但文档没有插入到 mongo 中。
另一方面,如果我通过为每个字段分配值来创建对象,它就可以正常工作。
我无法找到原因。下面是这两种情况的代码。
from flask import Flask
from flask.ext.mongoengine import MongoEngine
import json, datetime
app = Flask(__name__)
app.config["MONGODB_SETTINGS"] = {'DB': 'test','host': 'localhost'}
app.config["SECRET_KEY"] = "mySecretKey"
db = MongoEngine(app)
class User(db.Document):
user_id = db.StringField(max_length=16, primary_key = True)
username = db.StringField(min_length=8)
email = db.EmailField(required = True, unique = True)
password = db.StringField(required = True)
date_of_birth = db.DateTimeField()
gender = db.StringField(choices = ('M', 'F'))
'''
This one works. This will add a user in local mongodb(test)
'''
u1 = User()
u1.username = 'test12345'
u1.user_id = 'testid12345'
u1.email = 'test@test.com'
u1.password = 'testerpass'
u1.save()
'''
This one doesn't works.
'''
u2 = User()
temp_json = {'username':'test2_12345','user_id':'testid2@12345','password':'testerpass2','email':'test2@test.com'}
u2 = u2.from_json(json.dumps(temp_json))
u2.save()