【发布时间】：2019-02-12 10:51:07
【问题描述】：
我的项目的目的是从数据库中获取数据并仅在模板上显示。但是，它没有显示任何内容。 有两个选择字段确定要从数据库中检索哪些数据。一种用于主题，一种用于问题类型。
这是我正在使用的 model.py：
from django.db import models
from home.choices import *
# Create your models here.
class Topic(models.Model):
topic_name = models.IntegerField(
choices = question_topic_name_choices, default = 1)
def __str__(self):
return '%s' % self.topic_name
class Image (models.Model):
image_file = models.ImageField()
def __str__(self):
return '%s' % self.image_file
class Question(models.Model):
question_type = models. IntegerField(
choices = questions_type_choices, default = 1)
question_topic = models.ForeignKey( 'Topic',
on_delete=models.CASCADE,
blank=True,
null=True)
question_description = models.TextField()
question_answer = models.ForeignKey( 'Answer',
on_delete=models.CASCADE,
blank=True,
null=True)
question_image = models.ForeignKey( 'Image',
on_delete=models.CASCADE,
blank=True,
null=True)
def __str__(self):
return '%s' % self.question_type
class Answer(models.Model):
answer_description = models.TextField()
answer_image = models.ForeignKey( 'Image',
on_delete=models.CASCADE,
blank=True,
null=True)
answer_topic = models.ForeignKey( 'Topic',
on_delete=models.CASCADE,
blank=True,
null=True)
def __str__(self):
return '%s' % self.answer_description
这是forms.py
from django import forms
from betterforms.multiform import MultiModelForm
from .models import Topic, Image, Question, Answer
from .choices import questions_type_choices, question_topic_name_choices
class TopicForm(forms.ModelForm):
topic_name = forms.ChoiceField(
choices=question_topic_name_choices,
widget = forms.Select(
attrs = {'class': 'home-select-one'}
))
class Meta:
model = Topic
fields = ['topic_name',]
def __str__(self):
return self.fields
class QuestionForm(forms.ModelForm):
question_type = forms.ChoiceField(
choices= questions_type_choices,
widget = forms.Select(
attrs = {'class': 'home-select-two'},
))
question_answer = forms.CharField(
max_length=50,
widget = forms.HiddenInput()
)
question_image = forms.CharField(
max_length=50,
widget = forms.HiddenInput()
)
question_description = forms.CharField(
max_length=50,
widget = forms.HiddenInput()
)
class Meta:
model = Question
fields = ['question_type', 'question_description', 'question_answer', 'question_image']
def __str__(self):
return self.fields
class QuizMultiForm(MultiModelForm):
form_classes = {
'topics':TopicForm,
'questions':QuestionForm
}
def save(self, commit=True):
objects = super(QuizMultiForm, self).save(commit=False)
if commit:
topic_name = objects['topic_name']
topic_name.save()
question_type = objects['question_type']
question_type.topic_name = topic_name
question_type.save()
return objects
这是views.py
from django.shortcuts import render, render_to_response, redirect
from django.views.generic import TemplateView, CreateView
from home.models import Topic, Image, Question, Answer
from home.forms import QuizMultiForm
class QuizView(TemplateView):
template_name = 'index.html'
def get(self, request):
form = QuizMultiForm()
return render (request, self.template_name, {'form': form})
def post(self, request):
topic_name = ""
question_type = ""
question_description = ""
question_answer = ""
if request.method == 'POST':
form = QuizMultiForm(request.POST)
if form.is_valid():
topic_name = form.cleaned_data['topics']['topic_name']
question_type = form.cleaned_data['questions']['question_type']
question_description = form.cleaned_data['questions']['question_description']
question_answer = form.cleaned_data['questions']['question_answer']
args = {'form': form, 'topic_name': topic_name, 'question_type': question_type, 'question_description': question_description, 'question_answer': question_answer}
return render (request, 'results.html', args)
这是 HTML 文件
{% extends 'base.html' %}
{% block content %}
<table>
<thead>
<tr>
<th>Topic Number : # {{ topic_name }}</th>
<th>Question Type: {{ question_type }}</th>
</tr>
</thead>
<tbody>
<tr>
<td>The Question:{{ question_description }}</td>
<td>The Answer:{{ question_answer }}</td>
</tr>
<tr>
<!-- <td>The Question Image: {{ question_image }}</td> -->
<!-- <td>The Answer Image:{{ answer_image }}</td> -->
</tr>
</tbody>
</table>
{% endblock content %}这是choices.py
question_topic_name_choices = (
(1, "Topic #1: Measurements and Uncertainties"),
(2, "Topic #2: Mechanics"),
(3, "Topic #3: Thermal Physics"),
(4, "Topic #4: Waves"),
(5, "Topic #5: Electricity and Magnetism"),
(6, "Topic #6: Circular Motion and Gravitation"),
(7, "Topic #7: Atomic, Nuclear and Particle Physics"),
(8, "Topic #8: Energy Production"),
(9, "Topic #9: Wave Phenomena (HL Only)"),
(10, "Topic #10: Fields (HL Only)"),
(11, "Topic #11: Electromagnetic Induction (HL Only)"),
(12, "Topic #12: Quantum and Nuclear Physics (HL Only)"),
(13, "Option A: Relativity"),
(14, "Option B: Engineering Physics"),
(15, "Option C: Imaging"),
(16, "Option D: Astrophysics")
)
questions_type_choices = (
(1, "Multiple Choice Questions"),
(2, "Problem Solving Questions"))
【问题讨论】：
-
您不需要在forms.py中再次添加字段。
标签： python django django-forms django-templates django-views