Question

在制作此网站时遇到了几个问题，这是最新的一个。我创建了这些选择字段，但是，第一个仅显示数字，第二个仅显示数字，并且由于question_type链接到Question表，因此我添加了一些问题显示的是数据库，而不是查询类型，在这里仅显示两个问题的类型。并且根据用户的选择，将显示一个仅用于阅读的新页面，其中包含属于该特定主题的问题以及特定类型的问题。

这是models.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):
        questions_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)

        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.ModelChoiceField(
                        queryset = Topic.objects.all(),
                        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):
        questions_type =   forms.ModelChoiceField(
                        queryset = Question.objects.all(),
                        widget = forms.Select(
                        attrs = {'class': 'home-select-two'},
                        ))

        class Meta:
            model = Question
            fields = ['questions_type',]
            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()
                questions_type = objects['question_type']
                questions_type.topic_name = topic_name
                questions_type.save()
            return objects

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"))

这是views.py

    from django.shortcuts import render, render_to_response
    from django.views.generic import CreateView
    from home.models import Topic, Image, Question, Answer
    from home.forms import QuizMultiForm



    def QuizView(request):
        if request.method == "POST":
            form = QuizMultiForm(request.POST)
            if form.is_valid():
                pass
        else:
            form = QuizMultiForm()
        return render(request, "index.html", {'form': form})

谢谢！

Answer 1

问题是您将查询集传递为formChoiceField，这很好，但是将填充为数据库级别字段值。在您的情况下，这些是整数值。一种选择是，您可以将您的元组选择作为formChoices传递，django将自己处理所有内容。在您的form.py

中

 class TopicForm(forms.ModelForm):
        topic_name      =   forms.ChoiceField(choices=question_topic_name_choices)
        class Meta:
            model = Topic
            fields = ['topic_name',]



    class QuestionForm(forms.ModelForm):
        questions_type =  forms.ChoiceField(choices= questions_type_choices)

        class Meta:
            model = Question
            fields = ['questions_type',]

或者您可以将数据库选择字段从“整数”字段更改为char并存储人类可读的选择名称。

Django：如何显示选项名称而不是整数？

1 个答案: