英文:
Getting object index in django object list
问题
我在我的一个页面上有一个叫做comments的列表，当我在它上面进行迭代时，我想要知道每个项目的索引；我想要在这个for循环中知道comment的索引：
<!-- 评论列表部分 --><div class="card shadow my-3 p-5"><h3>评论：</h3><!-- 检查此帖子是否存在评论 -->{% if comments.count < 1 %}暂无评论，写下第一条吧！{% else %}<!-- 迭代评论并显示它们 -->{% for comment in comments %}<div id="comment-div"><span id="Comment-name">作者：{{ comment.name }}</span><span id="Comment-date">{{ comment.datetime_created|date:'M d Y' }}</span><p id="Comment-body">{{ comment.body }}</p></div>{% endfor %}{% endif %}</div>
视图：
class PostDetailView(FormMixin, generic.DetailView):model = Posttemplate_name = 'blog/post_detail.html'context_object_name = 'post'form_class = CreateCommentdef get_context_data(self, **kwargs):context = super(PostDetailView, self).get_context_data(**kwargs) # 获取默认上下文数据context['comments'] = Comment.objects.filter(accepted=True) # 向上下文添加额外字段return context
模型：
class Comment(models.Model):post = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='comments')email = models.EmailField(max_length=35)name = models.CharField(max_length=50)body = models.TextField()datetime_created = models.DateTimeField(auto_now_add=True)accepted = models.BooleanField(default=False)
如果您需要进一步的翻译或有其他问题，请告诉我。
英文:
I have a list in context of one of my pages called comments and when I'm iterating on it i want to know the index of item; i want to know the index of comment in this for loop:
<!-- comment list section --><div class="card shadow my-3 p-5"><h3>Comments:</h3><!-- checking if any comment exist on this post -->{% if comments.count < 1 %}No comments. write the first one!{% else %}<!-- iterating on comments and showing them -->{% for comment in comments %}<div id="comment-div"><span id="Comment-name">by: {{ comment.name }}</span><span id="Comment-date">{{ comment.datetime_created|date:'M d Y' }}</span><p id="Comment-body">{{ comment.body }}</p></div>{% endfor %}{% endif %}</div>
view:
class PostDetailView(FormMixin, generic.DetailView):model = Posttemplate_name = 'blog/post_detail.html'context_object_name = 'post'form_class = CreateCommentdef get_context_data(self, **kwargs):context = super(PostDetailView, self).get_context_data(**kwargs) # get the default context datacontext['comments'] = Comment.objects.filter(accepted=True) # add extra field to the contextreturn context
model:
class Comment(models.Model):post = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='comments')email = models.EmailField(max_length=35)name = models.CharField(max_length=50)body = models.TextField()datetime_created = models.DateTimeField(auto_now_add=True)accepted = models.BooleanField(default=False)
答案1
得分: 1
你可以使用 forloop.counter 或 forloop.counter0。
{% for comment in comments %}{{forloop.counter}}（从1开始）{{forloop.counter0}}（从0开始）
还有一些其他方便的工具。请查看内置的 'for' 文档。
英文:
You can use foorloop.counter or forloop.counter0
{% for comment in comments %}{{forloop.counter}} (begins with 1){{forloop.counter0}} (begins at 0)
There's some other handy tools as well. Have a look at the docs for 'for' builtins
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