Question

当我想显示列表中的某些信息和对象中的其他信息时，我遇到了问题。这是我到目前为止所做的。

我在这里有这两节课：

class CoursesNames(models.Model):
    DB = "data structure"
    SF = "software enginering"
    courseChoices = (
        (DB, "data structure"),
        (SF, "software enginering"),
    )
    courses = models.CharField(max_length=50, choices=courseChoices)

class Document(models.Model):

    course_name = models.ForeignKey(
    CoursesNames, on_delete=models.CASCADE, related_name='document_courses')
    title = models.CharField(max_length=100)
    description = models.TextField(help_text="some text for now")

这是我的观点

def showDocuments(request, *args, **kwargs):
    documents = Document.objects.all()
    context = {
        "documents": documents,
        "files": [], # an empty list for now 
    }

    # After writing some logic 
    context["files"].append(item)
    file_name = request.POST["course"]
    context["filename"] = file_name
    return render(request, 'dashboard.html', context)

这是我的html页面：＃我被困在这里！

{% if files %}
    <div class="container">
      <div class="row">
         {% for file in files%}
             {% for document in documents %}
                 {% if document.course_name == filename  %}
        <div class="col-sm-4 mt-4">
          <div class="card">
            <div class="card-header ">
              {{filename}}
            </div>
            <div class="card-body">
              <h5 class="card-title">{{document.title  }}</h5>
              <p class="card-text">this is a text where you should the best compilation of files that will definitely will help you get a st
              straight a inshallah</p>
              <a href="http://127.0.0.1:8000/media/documents/{{filename}}/{{file}}" class="btn btn-success" download>Download</a>
            </div>
          </div>
        </div>
                 {% endif %}
            {% endfor %}
          {% endfor %}
      </div>
    </div>

我想显示一些真实数据，而不是使用上面显示的"here is some text"类来显示Document，因此我可以使用{{document.title}}和{{document.description}}，但我可以找不到办法

任何帮助将不胜感激

Answer 1

这只是Daniel上面提到的一个简单查询请注意，您有一个外键：

documents = Document.objects.all().filter(course_name__courses__iexact=file_name)
context["documents"] = documents

Django同时遍历列表和对象

1 个答案: