Django 表单不工作（按钮什么都不做）

Question

我是 Django 的新手，在我创建了两个表单（TopicForm 和 EntryForm）之后，只有第二个不工作。当我单击添加条目按钮时，没有任何反应。我看不出问题到底出在哪里，这很奇怪，因为我对第一个表单做了几乎相同的事情，如果我需要共享任何其他文件，那么一切都是 good.Tell。新条目没有文本区域，只有那个按钮。

forms.py:

from django import forms

from .models import Topic, Entry

class TopicForm(forms.ModelForm):
    class Meta:
        model = Topic
        fields = ['text']
        labels = {'text': ''}

class EntryForm(forms.ModelForm):
    class Meta:
        model = Entry
        fields = ['text']
        labels = {'text': 'Entry:'}
        widgets = {'text': forms.Textarea(attrs={'cols': 80})}

urls.py:

"""Defines URL patterns for learning_logs."""

from django.urls import path

from . import views

app_name = 'learning_logs'
urlpatterns = [
    # Home page
    path('',views.index, name='index'),
    # Page that shows all topics.
    path('topics/', views.topics, name='topics'),
    # Detail page for a single topic.
    path('topics/<int:topic_id>/', views.topic, name='topic'),
    # Page for adding a new topic
    path('new_topic/', views.new_topic, name='new_topic'),
    # Page for adding a new entry
    path('new_entry/<int:topic_id>/', views.new_entry, name='new_entry'),
]

views.py:

from django.shortcuts import render, redirect

from .models import Topic

from .forms import TopicForm, EntryForm

def index(request):
    """The home page for Learning Log."""
    return render(request, 'learning_logs/index.html')

def topics(request):
    """Show all topics."""
    topics = Topic.objects.order_by('date_added')
    context = {'topics': topics}
    return render(request,'learning_logs/topics.html',context)

def topic(request, topic_id):
    """Show a single topic and all its entries."""
    topic = Topic.objects.get(id=topic_id)
    entries = topic.entry_set.order_by('-date_added')
    context = {'topic': topic, 'entries': entries}
    return render(request, 'learning_logs/topic.html', context)

def new_topic(request):
    """Add a new topic."""
    if request.method !='POST':
        # No data submitted; create a black form.
        form = TopicForm()
    else:
        # Post data submitted; process data.
        form = TopicForm(data=request.POST)
        if form.is_valid():
            form.save()
            return redirect('learning_logs:topics')

    # Display a blank or invalid form
    context = {'form': form}
    return render(request,'learning_logs/new_topic.html',context)

def new_entry(request,topic_id):
    """Add a new entry for a particular topic."""
    topic = Topic.objects.get(id=topic_id)

    if request.method !='POST':
        # No data submitted; create a blank form.
        form = EntryForm()
    else:
        # POST data submitted; process data.
        form = EntryForm(data=request.POST)
        if form.is_valid():
            new_entry = form.save(commit=False)
            new_entry.topic = topic
            new_entry.save()
            return redirect('learning_logs:topic',topic_id=topic_id)

    # Display a blank or invalid form.
    context = {'topic': topic, 'form': form}
    return render(request, 'learning_logs/new_entry.html', context)

new_entry.html:

{% extends "learning_logs/base.html" %}

{% block content %}
    <p><a href="{% url 'learning_logs:topic' topic.id %}">{{ topic }}</a></p>

    <p>Add a new entry:</p>
    <form action="{% url 'learning_logs:new_entry' topic.id %}" method='post'>
        {% csrf_token %}
        {{ forms.as_p }}
        <button name='submit'>Add entry</button>
    </form>

{% endblock content %}

models.py:

from django.db import models

class Topic(models.Model):
    """A topic the user is learning about."""
    text = models.CharField(max_length=200)
    date_added = models.DateTimeField(auto_now_add=True)
    
    def __str__(self):
        """Return a string representation of the model."""
        return self.text

class Entry(models.Model):
    """Something specific learned about a topic."""
    topic = models.ForeignKey(Topic, on_delete=models.CASCADE)
    text = models.TextField()
    date_added = models.DateTimeField(auto_now_add=True)

    class Meta:
        verbose_name_plural = 'entries'

    def __str__(self):
        """Return a string representation of the model."""
        if len(self.text) > 50:
            return f"{self.text[:50]}..."
        else:
            return f"{self.text}"

Answer 1

您 forgot 在您的 button 中设置 type="submit"。添加 type="submit" 然后尝试。

{% extends "learning_logs/base.html" %}

{% block content %}
<p><a href="{% url 'learning_logs:topic' topic.id %}">{{ topic }}</a></p>

<p>Add a new entry:</p>
<form action="{% url 'learning_logs:new_entry' topic.id %}" method='post'>
    {% csrf_token %}
    {{ form.as_p }}
    <button type="submit" name='submit'>Add entry</button>
</form>
{% endblock content %}

Django 表单不工作（按钮什么都不做）

Django forms not working (the button is doing nothing)

python

forms

django