（Django python）使用多个“for循环”进行渲染

嘿，伙计们，我正在使用Django python制作教育英语测试系统。 系统显示一篇文章和几个关于该文章的非固定问题。 每个问题都有可选择的项目，这些项目的编号不是固定的。 例如 {----第条---} {-----问题------} {-----项目----------------} {-----项目----------------} {-----项目----------------} {-----问题------} {-----项目----------------} {-----项目----------------} {-----项目----------------}

所以我定义了这样的模型：

# Question DB
class Article(models.Model):
    a_name = models.TextField(unique=True)
    a_con = models.TextField() #Article Contents

class Question(models.Model):
    q_name = models.TextField(unique=True)
    q_a = models.ForeignKey(Article,on_delete=models.CASCADE)
    q_con = models.TextField() #Question Contents
    q_ans = models.TextField() #Question Correct Answer
    
class Item(models.Model):
    i_q = models.ForeignKey(Question,on_delete=models.CASCADE)
    i_seq = models.PositiveIntegerField() #Item Sequence
    i_con = models.TextField() #Item Contents

# Image DB
class ArticleImage(models.Model):
    ai_name = models.TextField(unique=True)
    ai_a = models.ForeignKey(Article,on_delete=models.CASCADE)
    ai_src = models.TextField()

class QuestionImage(models.Model):
    qi_name = models.TextField(unique=True)
    qi_q = models.ForeignKey(Question,on_delete=models.CASCADE)
    qi_src = models.TextField()

class ItemImage(models.Model):
    ii_name = models.TextField(unique=True)
    ii_i = models.ForeignKey(Item,on_delete=models.CASCADE)
    ii_src = models.TextField()

我这样写view.py：

def findQuestionbyArticle(article_name):
    _ARTICLE_ = Article.objects.filter(a_name = article_name)
    for a in _ARTICLE_:
        _ARTICLE_IMAGE_ = ArticleImage.objects.filter(ai_a = a)
        _QUESTION_ = Question.objects.filter(q_a = a)
        _ITEM_ = {}
        _ITEM_IMAGE_ = {}
        for q in _QUESTION_:
            _QUESTION_IMAGE_ = QuestionImage.objects.filter(qi_q = q)
            _ITEM_[q] = Item.objects.filter(i_q = q)
            for i in _ITEM_[q]:
                _ITEM_IMAGE_[i] = ItemImage.objects.filter(ii_i = i)
    return {
        'article' : _ARTICLE_, 
        'article_image' : _ARTICLE_IMAGE_ , 
        'question' : _QUESTION_,
        'question_image' : _QUESTION_IMAGE_,
        'item' : _ITEM_,
        'item_image' : _ITEM_IMAGE_
    }

<div class = "content-a">
        <div class = "article">
            {%for article in articles%}
                <span>{{article.a_con}}</span>
                {%for article_image in article_images%}
                    <img src = {{article_image.src}}>
                {%endfor%}
            {%endfor%}
        </div>
        {%for question in questions %}
            <div class = "question">
                <span>{{question.q_con}}</span>
                {%for question_image in question_images %}
                    <img src = {{question_image.src}}>
                {%endfor%}
                {%for item in items[question] %}
                <div class = "item">
                    <span>{{item.i_con}}</span>
                    {%for item_image in item_images%}
                        <img src = {{item_image[item].src}}>
                    {%endfor%}
                </div>
                {%endfor%}
            </div>
        {%endfor%}
    </div>

我为模板编写了index.html，如下所示：

def findQuestionbyArticle(article_name):
    _ARTICLE_ = Article.objects.filter(a_name = article_name)
    for a in _ARTICLE_:
        _ARTICLE_IMAGE_ = ArticleImage.objects.filter(ai_a = a)
        _QUESTION_ = Question.objects.filter(q_a = a)
        _ITEM_ = {}
        _ITEM_IMAGE_ = {}
        for q in _QUESTION_:
            _QUESTION_IMAGE_ = QuestionImage.objects.filter(qi_q = q)
            _ITEM_[q] = Item.objects.filter(i_q = q)
            for i in _ITEM_[q]:
                _ITEM_IMAGE_[i] = ItemImage.objects.filter(ii_i = i)
    return {
        'article' : _ARTICLE_, 
        'article_image' : _ARTICLE_IMAGE_ , 
        'question' : _QUESTION_,
        'question_image' : _QUESTION_IMAGE_,
        'item' : _ITEM_,
        'item_image' : _ITEM_IMAGE_
    }

<div class = "content-a">
        <div class = "article">
            {%for article in articles%}
                <span>{{article.a_con}}</span>
                {%for article_image in article_images%}
                    <img src = {{article_image.src}}>
                {%endfor%}
            {%endfor%}
        </div>
        {%for question in questions %}
            <div class = "question">
                <span>{{question.q_con}}</span>
                {%for question_image in question_images %}
                    <img src = {{question_image.src}}>
                {%endfor%}
                {%for item in items[question] %}
                <div class = "item">
                    <span>{{item.i_con}}</span>
                    {%for item_image in item_images%}
                        <img src = {{item_image[item].src}}>
                    {%endfor%}
                </div>
                {%endfor%}
            </div>
        {%endfor%}
    </div>

当然，它不起作用。。。 在这种情况下，我如何使它工作？ 如果你有任何想法，请帮助我。。。这个问题困扰了我一个星期

编辑：

结果显示此错误页

---

首先，您可以看看您的语法。您在函数调用中重复出现错误，例如：

{%for article in article%} instead of {% for article in article %}
{%for question_image in question_images %} instead of  {% for  
{%endfor%} instead of {% endfor %}

请更正它们，然后重试。这可能有用。

---

对于这种情况，您可以在官方django文档中查看正确的标记格式。

如果需要根据第一篇文章的选择更改选择器的其余内容，则需要在模板中使用Ajax从DB返回呈现的上下文。@ZarakiKenpachi感谢您的回复，如果我使用Ajax，我可以在我的页面中显示多个“for for循环”？你可以根据所选的文章来改变问题部分中显示的上下文。@ ZarakiKenpachi Ah understood，谢谢。如果我需要的话，我应该考虑使用。that@bdemirka我解决了这个问题，请参考这个主题谢谢！我已经离开座位了。。。我明天再查，我会告诉你结果的！非常感谢。这不是语法错误，您可以同时使用它way@bedemirka. 如果你说的是对的，对我来说是新的。我只是查看了django的官方文档。你会发现我的建议是正确的语法，根据我的经验，每当我按照你的建议格式化标记时，我都会弄糟。谢谢，但修复后会显示相同的错误。