generic.edit.CreateView默認值分配，並插入到數據庫

Question

我有一個使用我的模型來生成一個「創建」屏幕下面基於類的觀點：

class ProjectCreateView(generic.edit.CreateView): 
    model = Project 
    fields = ['project_title','project_description','created_date'] 
    template_name = 'steps/project-detail.html' 
    success_url = reverse_lazy('index') 

型號：

class Project(models.Model): 
    project_title = models.CharField(max_length=200) 
    project_description = models.CharField(max_length=200, default="") 
    created_date = models.DateTimeField('date created') 
    owner = models.ForeignKey(User) 

    def __str__(self): 
     return self.project_title 

現在，問題是如果我不想讓'created_date'成爲實際的形式。相反，我希望在按下「提交」按鈕或將記錄添加到數據庫中時自動填充它。我怎樣才能做到這一點？

最後，是否可以在默認情況下指定owner字段？也就是說，我需要使用創建此記錄的用戶的信息來填充該字段。

Answer 1

將owner和created_date從字段列表中排除。然後在調用super()之前覆蓋form_valid並在窗體的實例上設置值。

由於您正在設置所有者，因此您可以使用LoginRequiredMixin來確保只有登錄用戶才能訪問該視圖。

from datetime import datetime 

from django.contrib.auth.mixins import LoginRequiredMixin 
from django.views.generic.edit import CreateView 


class ProjectCreateView(LoginRequiredMixin, CreateView): 
    model = Project 
    fields = ['project_title','project_description'] 
    template_name = 'steps/project-detail.html' 
    success_url = reverse_lazy('index') 

    def form_valid(self, form): 
     form.instance.owner = self.request.user 
     form.instance.created_date = datetime.now() 
     return super(ProjectCreateView, self).form_valid(form)