Python Django教程之实现待办事项应用程序

pip install --upgrade django-crispy-forms

django-admin startproject todo-site

cd todo-site

python manage.py runserver

ctrl-c

python manage.py startapp todo

from django.contrib import admin
from django.urls import path
from todo import views

urlpatterns = [
	#####################home_page###########################################
	path('', views.index, name="todo"),
	####################give id no. item_id name or item_id=i.id ############
	# 传递item_id作为主键，以删除具有给定id的待办事项
	path('del/', views.remove, name="del"),
	########################################################################
	path('admin/', admin.site.urls),
]

from django.db import models
from django.utils import timezone

class Todo(models.Model):
	title=models.CharField(max_length=100)
	details=models.TextField()
	date=models.DateTimeField(default=timezone.now)

	def __str__(self):
		return self.title

from django.shortcuts import render, redirect
from django.contrib import messages

## 导入待办事项表单和模型

from .forms import TodoForm
from .models import Todo

###############################################

def index(request):

	item_list = Todo.objects.order_by("-date")
	if request.method == "POST":
		form = TodoForm(request.POST)
		if form.is_valid():
			form.save()
			return redirect('todo')
	form = TodoForm()

	page = {
			"forms" : form,
			"list" : item_list,
			"title" : "TODO LIST",
		}
	return render(request, 'todo/index.html', page)



### 函数来删除项目，它从url接收待办事项item_id作为主键 ##
def remove(request, item_id):
	item = Todo.objects.get(id=item_id)
	item.delete()
	messages.info(request, "item removed !!!")
	return redirect('todo')

from django import forms
from .models import Todo

class TodoForm(forms.ModelForm):
	class Meta:
		model = Todo
		fields="__all__"

python manage.py makemigrations
python manage.py migrate

python manage.py runserver