详解python Todo清单实战

Todo清单

需要实现的功能有添加任务、删除任务、编辑任务，操作要关联数据库。

任务需要绑定用户，部门。用户需要绑定部门。

{#自己编写一个基类模板#}
{% extends 'bootstrap/base.html' %}

{% block styles %}
{{ super() }}
  
{% endblock %}
{% block navbar %}

  

    
    

      
        Toggle navigation
        
        
        
      
      
    

    
    

      

        
首页(current)
        
新闻
        
国际
        
国内
        
系统信息
        
登陆用户
      
      



        {% if 'user' in session %}
        

             {{ session.user }}
        

             注销 


        {% else %}

        

            登陆
        {% endif %}


        

            注册
      
    

  


{% endblock %}

{% block content %}
{#定义属于自己的block#}
  {% block newcontent %}


  {% endblock %}

  {% block footer %}


    宇宙大魔王


{% endblock %}
{% endblock %}

{#列表清单#}
{% extends 'base.html' %}

{% block newcontent %}
  

    

      /*添加任务*/
      

        

          {# 添加框          #}
          

            
          
          {#  选择框       #}
          

            
              {% for part in parts %}
                {{ part.name }}
              {% endfor %}
            
          

          {#  添加的按钮       #}
          

            
          
        

      


      /*任务显示*/
      
添加任务
      
        {% for todo in todos %}
          
            {#    #}
            

        {% endfor %}


      

        

          
任务内容
          
创建时间
          
状态
          
所属部门
          
操作
        

            
{{ todo.name }}
            
{{ todo.add_time }}

              {% if todo.status %}
                  已完成

              {% else %}
                 未完成

              {% endif %}

            
            
{{ todo.depart.name }}
            

{#              删除#}
{#              删除#}
                 删除
            
          
    
  

{% endblock %}

# 数据库操作文件 todo_models.py
from datetime import datetime
import pymysql
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_bootstrap import Bootstrap
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymysql://root:sheen@localhost/todo'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = True
db = SQLAlchemy(app)
bootstrap = Bootstrap(app)

class User(db.Model):
  id = db.Column(db.INTEGER,autoincrement=True,primary_key=True)
  name = db.Column(db.String(30),unique=True)
  pwd = db.Column(db.String(30))
  add_time = db.Column(db.DateTime, default=datetime.now())
  phone = db.Column(db.String(11))
  email = db.Column(db.String(18),unique=True)
  info = db.Column(db.TEXT)
  department_id = db.Column(db.INTEGER,db.ForeignKey('department.id'))  #部门id与其他表关联
  todo_id = db.relationship('Todo',backref = 'user')
  def __repr__(self):
    return '' %(self.name)
class Department(db.Model):
  id = db.Column(db.INTEGER,autoincrement=True,primary_key=True)
  name = db.Column(db.String(30),unique=True)
  users = db.relationship('User',backref = 'depart')
  todos = db.relationship('Todo',backref = 'depart')
  def __repr__(self):
    return '' %(self.name)

class Todo(db.Model):
  id = db.Column(db.INTEGER,autoincrement=True,primary_key=True)
  name = db.Column(db.String(30))
  add_time = db.Column(db.DateTime, default=datetime.now())
  status = db.Column(db.Boolean, default=False)
  department_id = db.Column(db.INTEGER,db.ForeignKey('department.id'))  #部门id与其他表关联
  user_id = db.Column(db.INTEGER,db.ForeignKey('user.id'))
  def __repr__(self):
    return '' % (self.name)
if __name__ == '__main__':
  db.drop_all()
  db.create_all()
  parts = ['人事部','Python开发部','Java开发部']
  partObj = [Department(name=part) for part in parts]
  db.session.add_all(partObj)
  db.session.commit()

  user_1 = User(name='sheen',pwd='123',department_id=2)
  db.session.add(user_1)
  db.session.commit()

# 试图函数程序 todo_views.py
from flask import render_template, url_for, request, redirect
from todo_models import app,Todo,Department,db

@app.route('/')
def index():
  return render_template('base.html')

@app.route('/login/')
def login():
  return render_template('todo_login.html')
@app.route('/list/')
def todo_list():
  todos = Todo.query.all()
  parts = Department.query.all()
  return render_template('todo_list.html',todos=todos,parts=parts)
@app.route('/todo/add/',methods=['POST'])
def add():
  name = request.form['todo_name']  #在todo_list.html文件中表单定义的添加任务input属性name="todo_name"。
  part = request.form['part']
  todo = Todo(name=name,department_id=part,user_id=1)
  db.session.add(todo)
  db.session.commit()
  print('ok')
  return redirect(url_for('todo_list'))
@app.route('/todo/undo//')
def undo(id):
  todo = Todo.query.filter_by(id=id).first()
  todo.status = False
  db.session.commit()
  return redirect(url_for('todo_list'))

@app.route('/todo/done//')
def done(id):
  todo = Todo.query.filter_by(id=id).first()
  todo.status = True
  db.session.commit()
  return redirect(url_for('todo_list'))

@app.route('/todo/delete//')
def todo_del(id):
  todo = Todo.query.filter_by(id=id).first()
  db.session.delete(todo)
  db.session.commit()
  return redirect(url_for('todo_list'))

# 主程序 run.py
from flask import Flask
from todo_models import app
from todo_views import *

if __name__ == '__main__':
  app.run()

list 页面最初显示图

当添加任务后，页面显示如下

当鼠标点击任务状态时，会发生改变

当点击删除按钮时，任务从数据库中删除，也不在页面中显示

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。