Django文件上傳不顯示

我寫了文件上傳的代碼，但它沒有顯示在我的目標頁面上。請幫我編輯我的代碼或建議。字段的其餘顯示而不是文件中的字段我的models.pyDjango文件上傳不顯示

class Help(models.Model): 
    researcher = models.CharField(max_length=100) 
    study = models.CharField(max_length=500) 
    date = models.DateTimeField(auto_now_add=True) 
    document = models.FileField(upload_to='documents/', null=True, blank=True)

forms.py

from django import forms 
from .models import Help 
from django.forms import ModelForm 

class AboutHelp(forms.ModelForm): 

    class Meta: 
     model = Help 
     fields = '__all__'

源頁面

<form action="{% url 'lazer.views.about_experiment' exp.link_name %}" method="POST" name="form"> 
    {% csrf_token %} 
     <label>Researcher Name(s): 
     <input type="text" name="researcher"><br> 
     <lable>Study Summary 
     <textarea rows="10" cols="50" placeholder="Start typing..." maxlength="500" class="form-control" name="study"></textarea> 
     <br> 
     <label>Upload your IRB approval letter: 
     <input type ="file" id="irb-file" class="file_input" name="document"></label> 
     <br> 
     <input type = "submit" value="Submit" class="btn btn-primary" /> 
    </form>

views.py

def about_experiment(request, ex_link_name): 
    researcher = None 
    study = None 
    posts = None 
    exp = get_object_or_404(Experiment,link_name = ex_link_name) 
    high_scores = ScoreItem.objects.filter(experiment=exp,active=True) 
    context = { 
    'request': request, 
    'exp':exp, 
    'high_scores': high_scores, 
    'awards':AwardItem.objects.filter(experiment=exp,visible=True), 
    } 

    if exp.about_file: 
    context['about_file'] = settings.EXPERIMENT_DIRS+exp.about_file.get_include_path() 
    return render(request, 'about_experiment.html', context) 

    if request.method == 'POST': 
     form = AboutHelp(request.POST, request.FILES) 
     posts = Help.objects.filter().order_by('-date')[0] 
     if form.is_valid(): 
      obj = form.save(commit = False) 
      obj.save() 
      researcher = form.cleaned_data['researcher'] 
      study = form.cleaned_data['study'] 
      document = form.cleaned_data['document'] 

    else: 
     form = AboutHelp() 
     posts = Help.objects.filter().order_by('-date')[0] 
     return render(request, 'about_experiment.html', {'posts': posts}) 
    return render(request, 'about_experiment.html', {'posts': posts})

目的地頁面

<h4><b>{{ posts.researcher }}</b></h4> 
      <p>{{ posts.study }}</p> 
      <p>Uploaded file is : {{ posts.document }}</p>

來源

2017-07-04 unknown

您是否檢查過您的文件已保存？我認爲你還沒有理解Django窗體的使用。這裏有how to。你正在創建窗體，但是你手動顯示的字段和在視圖中顯示的數據是forms.cleaned_data。另外，爲了保存文件，你需要定義<form enctype="multipart/form-data" >這裏的why

來源

2017-07-04 20:08:31 Aniket

問題是，每當我刷新我的目標頁面，文件一次又一次地在我的路徑上傳。如何排序？ – unknown

提交了一個Web表單後，即使您只是重定向到相同的視圖，也可以使用返回的Django的另一種快捷方式呈現方法HttpResponseRedirect。否則，某些瀏覽器將最終提交表單兩次。但是，您可以使用URL欄進行刷新以避免頁面重新提交。 – Aniket

Django文件上傳不顯示

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