如何使用 Django 模型从 Wagtail CMS 流字段面板中获取值？答案

【问题标题】：How to get the values from a Wagtail CMS Stream field panel using Django Models?如何使用 Django 模型从 Wagtail CMS 流字段面板中获取值？
【发布时间】：2020-12-30 05:42:05
【问题描述】：

我正在使用 wagtail CMS、Django、Postgresql 构建一个网页，并且在页面底部，我正在构建一个使用分页显示视频的部分。

我正在尝试使用 all_posts = MultiBlogPage.objects.values("all_blogs_content_pages") 从 Django 模型中检索数据

我得到的输出是

<PageQuerySet [{'all_blogs_content_pages': 
[
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ee2d21d0>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ed8fa2e8>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35f617e6a0>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ed90aac8>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ed90af60>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ed90a978>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ed90ae48>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ee2b9320>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ee2b9630>,
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ee339f28>, 
<wagtail.core.blocks.stream_block.StreamValue.StreamChild object at 0x7f35ee339470>
]}]>

有人可以看看我下面的代码，让我知道如何从 Django 模型中获取确切的值吗？

def get_context(self, request, *args, **kwargs):
    context = super(MultiBlogPage, self).get_context(request, *args, **kwargs)
    context['multiblog_page'] = self
    
    // The name of the stream field panel is "all_blogs_content_pages"
    all_posts = MultiBlogPage.objects.values("all_blogs_content_pages")

    print("all_posts...",all_posts)

    paginator = Paginator(all_posts, 3)
    print("paginator", paginator)
    page = request.GET.get("page")

    try:
        posts = paginator.page(page)        
    except PageNotAnInteger:
        posts = paginator.page(1)
    except EmptyPage:
        posts = paginator.page(paginator.num_pages)
    
    context["posts"] = posts
    return context

【问题讨论】：

标签： python django postgresql django-models wagtail-streamfield

【解决方案1】：

Wagtail 模型可以像标准 django 模型一样使用，因此似乎不需要将模型转换为字典列表。

live()，仅过滤已发布的版本，specific() 从您的 models.py 而非基础 Page 类中获取实际模型。

def get_context(self, request, *args, **kwargs):
    context = super(MultiBlogPage, self).get_context(request, *args, **kwargs)
    context['multiblog_page'] = self
    
    // The name of the stream field panel is "all_blogs_content_pages"
    all_posts = MultiBlogPage.objects.live().specific()

    print("all_posts...",all_posts)

    paginator = Paginator(all_posts, 3)
    print("paginator", paginator)
    page = request.GET.get("page")

    try:
        posts = paginator.page(page)        
    except PageNotAnInteger:
        posts = paginator.page(1)
    except EmptyPage:
        posts = paginator.page(paginator.num_pages)
    
    context["posts"] = posts
    return context

模板.html

<li>
  {{ post.all_blogs_content_pages }}
</li>

【讨论】：

感谢您的回答。很有帮助