博客基础_django_python从入门到实践_添加主题_添加条目_编辑条目

 要求及文件

　　用户可以添加新主题，添加新条目，以及编辑既有条目

 　　forms.py　　urls.py　　views.py　　html

　　 new_topic.html　　new_entry.html

 　　edit_entry.html

 

添加新主题

new_topic.html

 

 

topics.html

 

 

添加新条目

new_entry.html

 

 

topic.html

 

编辑条目

edit_entry.html

 

topic.html

 

代码

forms.py

 1 from django import forms
 2 from  .models import Topic, Entry
 3 
 4 class TopicForm(forms.modelForm):
 5     def Meta:
 6         model = Topic
 7         text = ['text']
 8         labels = {'text': ''} # 不为字段生成标签
 9 
10 class EntryForm(forms.modelForm):
11     def Meta:
12         model = Entry
13         text = ['text']
14         labels = {'text': ''}
15         widget = {'text': forms.Textarea(attrs={'cols': 80})}
View Code

 

urls.py

 1 from django.conf.urls import url
 2 from . import views
 3 
 4 urlpatterns=[
 5     url(r'^$', views.index, name='index'),
 6     url(r'^topics/$', views.topics, name='topics'),
 7     url(r'^topics/(?P<topic_id>\d+)/$', views.topic, name='topic'),
 8     url(r'^new_topic/$',views.new_topic, name='new_topic'),
 9     url(r'^new_entry/(?P<topic_id>\d+)/$', views.new_entry, name='new_entry'),
10     url(r'^edit_entry/(?P<entry_id>\d+)/$', views.edit_entry, name='edit_entry'),
11 ]
View Code

 

views.py

 1 from django.shortcuts import render
 2 from django.http import HttpResponseRedirect
 3 from django.core.urlresolvers import reverse
 4 from .models import Topic, Entry
 5 from .forms import TopicForm, EntryForm
 6 
 7 # Create your views here.
 8 def index(request):
 9     return render(request, 'learning_logs/index.html')
10 
11 def topics(request):
12     topics = Topic.objects.order_by('date_added')
13     context = {'topics':topics}
14     return render(request, 'learning_logs/topics.html', context)
15 
16 def topic(request, topic_id):
17     topic = Topic.objects.get(id=topic_id)
18     entries = topic.entry_set.order_by('-date_added')
19     context = {'topic':topic, 'entries':entries}
20     return render(request, 'learning_logs/topic.html', context)
21 
22 def new_topic(request):
23     if request.method != 'POST':
24        form = TopicForm()
25     else:
26         form = TopicForm(request.POST)
27         if form.is_valid():
28             form.save()
29             return HttpResponseRedirect(reverse('learning_logs:topics'))
30     context = {'form': form}
31     return render(request, 'learning_logs/new_topic.html', context)
32 
33 def new_entry(request, topic_id):
34     topic = Topic.objects.get(id=topic_id)
35     if request.method != 'POST':
36         form = EntryForm()
37     else:
38         form = EntryForm(request.POST)
39         if form.is_valid():
40             new_entry = form.save(commit=False)
41             new_entry.topic = topic
42             new_entry.save()
43             return HttpResponseRedirect(reverse('learning_logs:topic', args=[topic_id]))
44     context = {'form': form, 'topic': topic}
45 return render(request, 'learning_logs/new_entry.html', context)
46 
47 def edit_entry(request, entry_id):
48     entry = Entry.objects.get(id=entry_id)
49     topic = entry.topic
50     if request.method != 'POST':
51         form = EntryForm(instance=entry)
52     else:
53         form = EntryForm(instance=entry, data=request.POST)
54         if form.is_valid():
55             form.save()
56             return HttpResponseRedirect(reverse('learning_logs:topic', args=[topic.id]))
57     context = {'form':form, 'entry':entry, 'topic':topic}
58     return render(request, 'learning_logs/edit_entry.html', context)
View Code

 

new_topic.html

1 {% extends 'learning_logs/base.html' %}
2 {% block content %}
3     <p>add a new topic: </p>
4     <form action="{% urls 'learning_logs:new_topic %}" method='post'>
5         {% csrf_token %}
6         {{ form.as_p }}
7         <button name='submit'>add topic</button>
8     </form>           
9 {% endblock content %}
View Code

 

topics.html

1 {% extends 'learning_logs/base.html' %}
2 {% block content %}
3 --snip
4      <p><a href="{% url 'learning_logs:new_topic %}">Add a new topic</a></p>
5 {% endblock content %}
View Code

 

new_entry.html

% extends 'learning_logs/base.html' %}
{% block content %}
    <p><a href="{% url 'learning_logs:topic' topic.id %}">{{ topic }}</p>
    <p>Add a new entry:</p>
    <form action="{% url 'learning_logs:new_entry' topic.id %}" method='post'>
        {% csrf_token %}
        {{ form.as_p }}
        <button name='submit'>add entry</button>
    </form>
{% endblock content %}
View Code

 

edit_entry.html

 1 {% extends 'learning_logs/base.html' %}
 2 
 3 {% block content %}
 4     <p><a href="{% url 'learning_logs:topic' topic.id%}">{{ topic }}</a></p>
 5     <p>Edit entry: </p>
 6     <form action="{% url 'learning_logs:edit_entry' entry.id %}" method='post'>
 7         {% csrf_token %}
 8         {{ form.as_p }}
 9     <button name='submit'>save changes</button>
10     </form>
11 {% endblock content %}
View Code

 

topic.html 

 1 {% extends 'learning_logs/base.html' %}
 2 
 3 {% block content %}
 4 <p>Topic:{{ topic }}</p>
 5 <p>Entries:</p>
 6 <p>
 7     <a href="{% url 'learning_logs:new_entry' topic.id%}">add new entry</a>
 8 </p>
 9 <ul>
10     {% for entry in entries %}
11         <li>
12             <p>{{ entry.date_added|date:'M d, Y H:i' }}</p>
13             <p>{{ entry.text|linebreaks }}</p>
14         </li>
15         <p>
16             <a href="{% url 'learning_logs:edit_entry' entry.id %}">edit entry</a>
17         </p>
18     {% empty %}
19         There are no entries for this topic yet.
20     {% endfor %}
21 </ul>
22 {% endblock content %}
View Code

posted @ 2018-10-21 22:27  phappiness  阅读(873)  评论(0)  编辑  收藏  举报