Django視圖不能正確重定向

Question

我在使用Django快捷方式呈現頁面時遇到了一些困難。我的工作流程非常簡單：

1. 用戶進入一個頁面，在這裏他們可以查看某些項目數據（detail_project）
2. 如果他們想更新項目數據，他們應該點擊一個按鈕，將發送POST請求，加載update_project頁面。此頁面將加載當前的項目數據。
3. 用戶更新並提交新數據。提交後，它們返回到detail_project頁面。

我的看法是這樣的：

def update_project(request): 
    if request.method == 'POST': 
     if 'update_project_submit' in request.POST: 
      # updates project with form data and returns to detail project page 
      return redirect('detail_project', project_name=project_name) 
     else: 
      # loads project original data into the form 
    return render(request, 'project/update_project.html', context) 


def detail_project(request, project_name): 
    if request.method == 'POST':   
     if 'update_project' in request.POST: 
      return update_project(request) 
     else: 
      # does another stuff 
    else: 
     # shows project details 
     return render(request, 'project/detail_project.html', context)  

urls.py：

url(r'^project/update/$', views.update_project, name='update_project'), 
url(r'^project/details/(?P<project_name>[a-zA-Z][a-zA-Z0-9-_]+)/$', views.detail_project, name='detail_project'), 

而且update_project.html：

<form class="form-horizontal" role="form" action="" method="post"> 
    {% csrf_token %} 
    {% for field in form %} 

     <div class="form-group"> 
      <div class="col-sm-3"> 
       <label for="{{ field.id_for_label }}" class="control-label">{{ field.label }}</label> 
      </div> 

      <div class="col-sm-9"> 
       {{field}} 
      </div> 
      <div class="col-sm-12"> 
       {{ field.help_text }} 
      </div> 
     </div> 
     {{field.non_field_errors }} 
     {{field.errors}} 

    {% endfor %} 


    <button type="submit" name="update_project_submit" class="btn btn-primary">Submit</button> 

</form> 

[更新]

Forms.py

class UpdateProjectForm(forms.Form): 

    project_name_validator = RegexValidator(r'^[a-zA-Z][a-zA-Z0-9-_]{1,31}$', constants.PROJECT_NAME_INVALID) 
    project_name = forms.CharField(required=True, widget=forms.TextInput(attrs={'required': 'true'}), validators=[project_name_validator]) 
    project_description = forms.CharField(required=True, widget=forms.Textarea(attrs={'style':'resize:none;', 'required': 'true'})) 
    project_expiration = forms.DateField(required=False, widget=forms.TextInput(attrs={'class':'datepicker'})) 

    def __init__(self, *args, **kwargs): 
     super(UpdateProjectForm, self).__init__(*args, **kwargs) 
     self.fields['project_name'].label = "Project Name:" 
     self.fields['project_description'].label = "Project Description:" 
     self.fields['project_expiration'].label = "Expiration Date:" 

的問題是，我不能更新我的項目。我的頁面正確加載表單（update_project）和當前數據（步驟2），但是當我提交它時（單擊提交按鈕，我將被重定向到詳細項目頁面而不輸入if 'update_project_submit' in request.POST:聲明。也許我的工作流程是錯誤的。不能看着辦吧。

我印我的請求，我真的cofirmed，當我提交表單，我收到一個POST請求detail_project。

有我丟失的東西？還是我我試圖根據Django的邏輯做錯事？

Answer 1

使用

if request.POST.get('update_project_submit', False): 

代替

if 'update_project_submit' in request.POST: