DJango如何为测验构建表单集？

2019-10-23 11:56:26 阅读：87 来源： 互联网

我正在研究需要显示要参加的测验的测验应用程序
我的模型.py看起来像这样

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

#######################
#Quiz Structure Models#
#######################

class Quiz(models.Model):
    name = models.CharField(max_length = 255)
    creation = models.DateField(auto_now_add=True)
    creator = models.ForeignKey(User)

    def __unicode__ (self):
        return self.name

    def possible(self):
        total = 0
        for question in self.question_set.all():
            question.save()
            total += question.value
        return total



class Question(models.Model):
    question = models.CharField(max_length = 255)
    quiz = models.ForeignKey(Quiz)
    creator = models.ForeignKey(User)
    creation = models.DateField(auto_now_add = True)
    #objective = TODO: include standards linking in later versions
    value = models.IntegerField(default = 1)

    def __unicode__(self):
        return self.question

class Answer(models.Model):
    answer = models.CharField(max_length = 255)
    question = models.ForeignKey(Question)
    is_correct = models.BooleanField(default = False)
    #Creator is tied to the quiz


##########
#Attempts#
##########
class QuizAttempt(models.Model):
    student = models.ForeignKey(User)
    quiz = models.ForeignKey(Quiz)
    date = models.DateField(auto_now_add = True)
    #Score Method (similar to possible in Quiz 


class QuestionAttempt(models.Model):
    attempt = models.ForeignKey(QuizAttempt)
    question = models.ForeignKey(Question)
    response = models.ForeignKey(Answer)


#######
#Admin#
#######

class QuestionInline(admin.StackedInline):
    model = Question
    extra = 2


class AnswerInline(admin.StackedInline):
    model = Answer
    extra = 2


class QuizAdmin(admin.ModelAdmin):
    list_display = ('name', 'creator', 'creation', 'possible',)
    search_fields = ('name', 'creator')
    inlines = [QuestionInline]

admin.site.register(Quiz, QuizAdmin)

class QuestionAdmin(admin.ModelAdmin):
    inlines = [AnswerInline]
    search_fields = ('question', 'quiz', 'value',)
    list_display = ('question', 'quiz', 'value',)

admin.site.register(Question, QuestionAdmin)

我正在尝试构建一个表单或表单集,该表单或表单集将使我拥有一个包含所有问题的测验表单,因此它看起来像这样,并将让我重新获得,以保存学生的尝试测验.

>问题1

>选项a
>等

到目前为止,看来我最好的解决方案是从这些模型中构建一个表单集,但是我不确定如何指定我的选择以将其限制为与当前问题相关的答案,或者如何在视图中获取正确的表单集.

解决方法:

如果我正确理解了您的问题,则可能要在执行时创建一个自定义窗体以及许多自定义字段.我期望以下方面：

class QuizForm(forms.Form):
    def __init__(self, data, questions, *args, **kwargs):
        self.questions = questions
        for question in questions:
            field_name = "question_%d" % question.pk
            choices = []
            for answer in question.answer_set().all():
                choices.append((answer.pk, answer.answer,))
            ## May need to pass some initial data, etc:
            field = forms.ChoiceField(label=question.question, required=True, 
                                      choices=choices, widget=forms.RadioSelect)
        return super(QuizForm, self).__init__(data, *args, **kwargs)
    def save(self):
        ## Loop back through the question/answer fields and manually
        ## update the Attempt instance before returning it.

通过管理界面可能需要进行其他调整,但这应该为您在执行时构造表单本身提供一个良好的开端.

您的视图可能看起来像：

# Assuming something like:  /quiz/69/ with "69" being the quiz PK.
def render_quiz(request, quiz_id):
    quiz = get_object_or_404(Quiz, quiz_id)
    form = QuizForm(questions=quiz.question_set.all())
    if request.method == "POST":
        form = QuizForm(request.POST, questions=quiz.question_set.all())
        if form.is_valid(): ## Will only ensure the option exists, not correctness.
            attempt = form.save()
            return redirect(attempt)
    return render_to_response('quiz.html', {"form": form})

标签：python,django,django-forms
来源： https://codeday.me/bug/20191023/1912711.html

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DJango如何为测验构建表单集？