python-flask 框架使用 flask_mongoengine

Posted 2020-08-14

开发环境配置

再使用 mongodb 之前，需要先安装 pymongo ，以及flask_mongoengine

1. 切换到 virtualenv 环境

    . /pyenv/bin/activate

    

2. 安装pymongo

    pip install pymongo


3. 安装flask_mongoengine

    pip install flask_mongoengine

　　

 

书写model

models.py，代码如下

from flask_mongoengine import MongoEngine

#--

#进行配置

app.config[‘MONGODB_SETTINGS‘] = {

    ‘db‘    : ‘the_way_to_flask‘,

    ‘host‘  : ‘localhost‘,

    ‘port‘  : 27017

}
 

＃创建mongo原型

mdb = MongoEngine()

mdb.init_app(app)

 

class Address(mdb.Document):

    name = mdb.StringField()

    address = mdb.StringField()

    
    # 查询 Address.objects(name="zhangsan").first()

    # 添加 Address(name=‘lisi‘, address=‘[email protected]‘).save()

    # 删除 Address.delete()

    # 更新 Address.update(name="[email protected]")

　　

书写视图

views.py,代码如下

from models import Address

from flask import jsonify

#--

@app.route(‘/mdb_list‘,methods=[‘get‘])

def mdb_list():
    name = request.args.get(‘name‘)
    address = request.args.get(‘address‘)
    Addr = Address.objects(name=name,address=address).first()

    if not Addr:
        Address(name=name , address=address).save()
        return jsonify({‘code‘:1,‘message‘:‘success‘})
    else:
        return jsonify(Addr.to_json())