在數據庫中存儲應用常量

Question

我正在創建一個小博客應用程序。下面是從我的觀點一個片段： views.py

from django.shortcuts import render_to_response 
from blog.post.models import Post, Comment 
from django.contrib.auth.models import User 
from django.http import Http404 

PAGE_SIZE = 5 
ABSTRACT_CONTENT_SIZE = 300 

def main(request, page = 0): 
    post_objects = Post.objects.filter(visible = True)[page : page + PAGE_SIZE] 
    posts = [] 
    for p in post_objects: 
     if len(p.content) > ABSTRACT_CONTENT_SIZE: 
      abstract = p.content[:ABSTRACT_CONTENT_SIZE] + '...' 
     else: 
      abstract = p.content 
     posts.append({ 
     'subject': p.subject, 
     'content': abstract, 
     'author': p.author, 
     'date': p.date, 
     'noc': p.number_of_comments, 
     'number': p.pk 
     }) 
    return render_to_response('main.html',{'posts': posts}) 

我想將這些常量2到數據庫（所以我以後可以從管理員進行管理）。問題是，我應該如何在視圖中加載它們，或者有另一種方法來執行此任務？先謝謝你。

Answer 1

class SiteSettings(models.Model): 
     value = models.IntegerField() # Assuming you are only using integer value 
     type = models.CharField(unique=True) # could also make this the primary key 


PAGE_SIZE = SiteSettings.Objects.filter(type="page_size").get() 
# you should be able to do this as well since type is unique 
PAGE_SIZE = SiteSettings.Objects.get(type="page_size") 
PAGE_SIZE.value 

Answer 2

檢查all this configuration apps在你DATABSE