Django ModelForm错误消息没有在模板中显示

我已经创建了一些自定义的错误信息（尽我所能找到的文档），但我没有收到任何错误，更不用说我的自定义错误了。这里是我的代码：Django ModelForm错误消息没有在模板中显示

forms.py

class UploadFileForm(forms.ModelForm): 
    class Meta: 
     model = Job 
     fields = ['jobID','original_file'] 
     labels = { 
      'jobID': _('Job ID'), 
      'original_file': _('File'), 
     } 
     error_messages = { 
      'jobID': { 
       'max_length': _("Job ID is limited to 50 characters."), 
       'required': _("Please provide a Job ID."), 
       'invalid': _("Job ID must be a combination of letters, numbers, - and _.") 
      }, 
      'original_file': { 
       'required': _("Please provide a file."), 
       'validators': _("Please ensure you are selecting a zipped (.zip) GDB."), 
      }, 
     } 
     help_texts = { 
      'original_file': _('Please provide a zipped (.zip) GDB.'), 
     }

upload.html

<form method = "POST" action="{% url 'precheck:upload' %}" enctype="multipart/form-data" name="uploadForm"> 
     {% csrf_token %} 

     {% for field in form %} 
     <div> 
      <strong>{{ field.errors }}</strong> 
      {{ field.label_tag }} {{ field }} 
      {% if field.help_text %} 
       <p class ="help-text">{{ field.help_text }}</p> 
      {% endif %} 
     </div> 
     {% endfor %} 

     <br /> 
     <button type="button" id="uploadButton" data-loading-text="Loading..." class="btn btn-primary" autocomplete="off" style="margin: auto 20%; ">Upload</button> 

    </form>

views.py

def upload(request): 
    if request.method == 'POST': 
     form = UploadFileForm(request.POST, request.FILES, user = request.user) 
     if form.is_valid(): 
      form.save() 
      request.session['jobID'] = request.POST['jobID'] 
      #job = Job.objects.filter(user_id = request.user.id).filter(jobID = request.POST['jobID']).latest() 
      # initialize(job) 
      return render(request,'precheck/run_precheck.html') 
    form = UploadFileForm() 
    historyList = Job.objects.filter(user_id = request.user.id)[:10] 
    return render(request, 'precheck/upload.html',{'form': form, 'history': historyList})

我已经包含了所有我认为相关的东西，让我知道你是否需要更多东西。

来源

2017-08-29 chaserchap

你在做什么来验证你的领域并产生这些错误？如果我以'required'为例，Job Job模型中的'jobID'和'original_file'是必填字段吗？你是否在说如果你没有在表单中填写jobID，那么在发布后你看不到错误？你的观点实际上是否验证了你的表格，并且如果它无效就表现出来？（向我们展示你的view.py代码） – dirkgroten

@dirkgroten我在上面添加了'views.py'。 'jobID'和'original_file'是模型中必需的字段，'jobID'使用'validate_slug'和'MaxLengthValidator'验证 – chaserchap

的问题是，如果窗体是无效的，你的形式重新初始形式：

form = UploadFileForm() 
historyList = Job.objects.filter(user_id = request.user.id)[:10] 
return render(request, 'precheck/upload.html',{'form': form, 'history': historyList})

你的流量应该呈现的结合形式（其错误的），所以它应该是：

if request.method == 'POST': 
    form = UploadFileForm(request.POST, request.FILES, user = request.user) 
    if form.is_valid(): 
     # do stuff for valid form 
     return redirect 
elif request.method == 'GET': 
    form = UploadFileForm() 
# flow common for GET and invalid form 
return render(request, template, {'form': form})

来源

2017-08-29 17:46:53 dirkgroten

Django ModelForm错误消息没有在模板中显示

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