Django模型日期時間字段

Question

我想創建一個模型，應該只接受從今天起15天的日期，並存儲開始時間和結束時間，並在開始時間之前輸入結束時間時顯示錯誤。

Answer 1

模型清潔功能是你要找的。

這是正確的，從Django文檔的例子開始：

import datetime 
from django.core.exceptions import ValidationError 
from django.db import models 

class Article(models.Model): 
    ... 
    def clean(self): 
     # Don't allow draft entries to have a pub_date. 
     if self.status == 'draft' and self.pub_date is not None: 
      raise ValidationError('Draft entries may not have a publication date.') 
     # Set the pub_date for published items if it hasn't been set already. 
     if self.status == 'published' and self.pub_date is None: 
      self.pub_date = datetime.date.today() 

進一步的細節在這裏閱讀：https://docs.djangoproject.com/en/dev/ref/models/instances/#validating-objects