Question

我的模型：

class Comment(models.Model):
    product = models.ForeignKey(Product ,on_delete=models.CASCADE, related_name='comments')
    user = models.ForeignKey(User ,on_delete=models.CASCADE, max_length=80, related_name='comments_user')
    body = models.TextField()
    created_on = jmodels.jDateField(auto_now_add=True)
    created_on_time = models.TimeField(auto_now_add=True,null=True)
    active = models.BooleanField(default=False)

    class Meta:
        ordering = ['created_on'] 

    def __str__(self):
        return 'Comment {} by {}'.format(self.body, self.user)

class Rating(models.Model):
    product = models.ForeignKey(Product ,on_delete=models.CASCADE)
    user = models.ForeignKey(User ,on_delete=models.CASCADE)
    score = models.IntegerField(default=0,
        validators=[
            MaxValueValidator(5),
            MinValueValidator(0),
        ]
    )

    def __str__(self):
        return 'rate {} by {} for {}'.format(self.score, self.user, self.product)

在产品单页中，我有评论部分，如果用户在用户名和评论日期的下一个评论，我想显示用户评分。

我的观点：

def product_details(request, category_url, subcategory_url, product_url):
    product = get_object_or_404(Product, product_url=product_url)
    stocks = Stock.objects.filter(product=product)
    rate = Rating.objects.filter(product=product, user=request.user)
    all_rates = Rating.objects.filter(product=product)
    all_rate_count = Rating.objects.filter(product=product).count()
    all_rate = sum([all_rate.score for all_rate in all_rates])
    all_rate = all_rate/all_rate_count
    all_rate = all_rate*100/5
    comments = product.comments.filter(product=product, active=True)
    if request.method == "POST":
        body = request.POST['body']
        new_comment = Comment(user=request.user,product=product, body=body)
        new_comment.save()
        message_good = "نظر شما با موفقیت ثبت شد بعد از برسی نمایش داده میشود!"
        ctx = {'product':product, 'stocks':stocks, 'rate':rate, 'all_rate':all_rate,
            'comments':comments,
            'message_good':message_good,
            'all_rate_count':all_rate_count}
        return render(request, 'products/product_details.html', ctx)
    ctx = {'product':product, 'stocks':stocks, 'rate':rate, 'all_rate':all_rate,
     'comments':comments,
     'all_rate_count':all_rate_count}
    return render(request, 'products/product_details.html', ctx)

还有我的 html :

{% for comment in comments %}
<div class="comments" style="padding: 10px;">
  <p class="font-weight-bold">
    {{ comment.user }}
    <span class=" text-muted font-weight-normal">
      {{ comment.created_on }}
    </span>
    <span class=" text-muted font-weight-normal">
      {{ comment.created_on_time|date:"G:i" }}
    </span>
  </p>
  {{ comment.body | linebreaks }}
</div>
{% endfor %}

我更新了我的代码，并显示了我的视图和我的单个 html 因此，如果请帮助我按用户为用户过滤的每条评论显示产品费率。或关于对单个产品页面进行评级或显示评论的其他方式的任何更好的建议。感谢帮助

Answer 1

我会添加一个 unique_together 约束来强制用户只能为产品留下一个评分。

class Rating(models.Model):
    product = models.ForeignKey(Product ,on_delete=models.CASCADE)
    user = models.ForeignKey(User ,on_delete=models.CASCADE)
    score = models.IntegerField(default=0,
        validators=[
            MaxValueValidator(5),
            MinValueValidator(0),
        ]
    )

  class Meta:
    unique_together = ('product', 'user')

    def __str__(self):
        return 'rate {} by {} for {}'.format(self.score, self.user, self.product)

在您看来，因为您对每个用户的产品只有一个评分。

rate = Rating.objects.get(product=product, user=request.user)

在您的模板中：

{% for comment in comments %}
<div class="comments" style="padding: 10px;">
  <p class="font-weight-bold">
    {{ comment.user }}
    <span class=" text-muted font-weight-normal">
      {{ comment.created_on }}
    </span>
    <span class=" text-muted font-weight-normal">
      {{ comment.created_on_time|date:"G:i" }}
    </span>
  </p>
  {{ comment.body | linebreaks }}

  {{ rate.score }}
</div>
{% endfor %}

如何在产品评论中显示评分

1 个答案: