django之todolist(二）

实现了下，没动前端的东西。实现功能的顺序：view, finish, back, delete, add, update. 逻辑比较简单，正则表达式的部分还有待熟悉。做的过程中写完view小激动就忘记配置url了。前端可以先注释掉还没有实现的功能，然后再一一补上就可以了。

项目下的urls.py:

from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^todo/', include('todo.urls')),
    url(r'^admin/', include(admin.site.urls)),

]

app下的urls.py:

from django.conf.urls import patterns,url
from todo import views

#url -->  view (handle)-->  webpage

urlpatterns = patterns(
    '', #have to add this line why
    url(r'^$',views.todolist,name='todo'),
    url(r'^finish/(?P\d+)/$',views.todofinish,name='finish'),
    url(r'^back/(?P\d+)/$',views.todoback,name='back'),
    url(r'^delete/(?P\d+)/$',views.tododelete,name='delete'),
    url(r'^add/$',views.todoadd,name='add'),
    url(r'^update/(?P\d+)/$',views.todoupdate,name='update'),

)

views部分：

from django.shortcuts import render
from django.http import HttpResponseRedirect,Http404
from models import Todo
from django.contrib.auth.models import User

def todolist(request):
    todolist = Todo.objects.filter(flag=1).order_by('-pubtime')
    finishlist= Todo.objects.filter(flag=0).order_by('-pubtime')
    context = {'todolist':todolist,'finishlist':finishlist} #curly bracket for dictionary
    return render(request,'simpleTodo.html',context)

def todofinish(request,id=''):#give the todo id
    todo = Todo.objects.get(id=id)
    if(todo.flag=='1'):
        todo.flag='0' #0 is finish
        todo.save()

        #no need, becaue the redirection will ask view.todolist
        #todolist = Todo.objects.filter(flag=1)
        #todofinish = Todo.objects.filter(flag=0)
        #context = {'todolist':todolist}

        return HttpResponseRedirect('/todo/')
    todolist =  Todo.objects.filter(flag=1)
    todofinish = Todo.objects.filter(flag=0)
    context = {'todolist':todolist,'todofinish':todofinish}
    return render(request,'simpleTodo.html',context)

def todoback(request,id=''):
    todo = Todo.objects.get(id=id)
    if todo.flag=='0':
        todo.flag='1'
        todo.save()
    return HttpResponseRedirect('/todo/')

def tododelete(request,id=''):
    try:
        todo = Todo.objects.get(id=id)
    except Exception:
        raise Http404
    #if element exists
    if todo:
        todo.delete()
        return HttpResponseRedirect('/todo/')


def todoadd(request):

    if request.method=='POST':

        todocontent = request.POST['todo']
        priority = request.POST['priority']
        user = User.objects.get(id='1')
        todo = Todo(user=user, todo=todocontent, priority=priority, flag='1')
        todo.save()
        #return HttpResponseRedirect('/todo/')
        todolist =  Todo.objects.filter(flag=1)
        todofinish = Todo.objects.filter(flag=0)
        context = {'todolist':todolist,'todofinish':todofinish}
        #return render(request,'simpleTodo.html',context)
        print "go this way"
        return HttpResponseRedirect('/todo/')
    else: print "wrong"


def todoupdate(request,id=''):
    if request.method == 'POST':
        try:
            todo = Todo.objects.get(id=id)
        except Exception:
            return HttpResponseRedirect('/todos/')
        todocontent = request.POST['todo']
        priority = request.POST['priority']
        todo.todo = todocontent
        todo.priority = priority
        todo.save()
        return HttpResponseRedirect('/todo/')
    else:
        try:
            todo = Todo.objects.get(id=id)
        except Exception:
            raise Http404

        return render(request,'updatatodo.html',{'todo':todo})

model: 

from django.db import models
from django.contrib.auth.models import User

class Todo(models.Model):
    user = models.ForeignKey(User)
    todo = models.CharField(max_length=50)
    flag = models.CharField(max_length=2)
    priority = models.CharField(max_length=2)
    pubtime = models.DateTimeField(auto_now_add=True)
    #difference between auto now auto now add ;auto now cannot modigy
    def __str__(self):              # __unicode__ on Python 2
        return self.todo

效果图：

感觉要学的内容还很多，可能需要看大量的文档才可以做多一点的功能。

参考源代码：

https://github.com/zongxiao/Django-Simple-Todo