Question

这是我的烧瓶和mongodb snadb.py中的数据库代码

 from flask import Flask, render_template, request, redirect, url_for,request
 from bson import ObjectId
 from pymongo import MongoClient
 import os

 app = Flask(__name__)

 client = MongoClient("mongodb://127.0.0.1:27017") #host uri
 db = client.Student #Select the database
 todos = db.Student_list #Select the collection name


 def redirect_url():  
     return url_for('action') 

 @app.route("/list")  
 def lists ():  
   return render_template('snap17.html') 


@app.route("/snap17", methods=['GET','POST'])  
def action ():  
  #Adding a Task  
  name=request.values.get("firstname")  
  todos.insert({ "name":name})  
  return redirect("/list") 

if __name__ == "__main__":  
    app.run(debug=True)

`

Answer 1

在您的视图函数中显示/list。从数据库读取您的datas，并相应地将其呈现在您的模板中，如下所示：

@app.route("/list")  
def lists(): 
    todolist = db.Student_list.find()
    return render_template('snap17.html', todolist=todolist)

然后在模板snap17.html中将其呈现为

<html>
  {% for elem in todolist %}
     <li> {{elem['name']}}</li>
  {% endfor %}
</html>

要写入数据库，请在您现有的应用程序中发出一个GET请求：

http://localhost:5000/snap17?firstname="JaiSambhu"

当我运行此flask代码时，什么也没发生，值未存储在mongodb数据库中

1 个答案: