####django的scaffold:

    相对于rails的scaffold，即在model的基础上，自动生成crud界面。django 引入了插件djang-groundwork，并做简单的配置即可使用。扩展了manage.py命令

$git clone https://github.com/madhusudancs/django-groundwork.git$ls django-groundworkAUTHORS           LICENSE           README.rst        django-groundwork

    将其中的django-groundwork复制到project当中，在setting.py中加入该app

安装后，使用$python manage.py help可以看到，列出的可用命令中多了一个groundwork。其语法是：$python manage.py groundwork appname ModelName1 ModelName2接下来使用这个app为Product生成scaffold:$python manage.py groundwork depotapp Product，就会生成所谓的scaffold。 此时运行开发服务器（python manage.py runserver)，就可以访问下面的地址：http://localhost:8000/depotapp/product/list/  访问Product列表，并链接到create,edit,view等界面。

#### django-groundwork 生成物分析

    其实其生成物无非就是URLconf+MTV!!!

    先来看URLconf：

如果你的django版本是1.4以上的，那么需要手动修改一些文件，如下：删除与manage.py同层的urls.py 和 setting.py 但是不删除templtes目录查看depot中的urls.py 并加入以下内容： urlpatterns += patterns('',      url(r'^depotapp/', include('depotapp.urls')),  )进入depotapp目录下查看自动生的urls.py如下：   from django.conf.urls.defaults import *   from models import *   from views import *      urlpatterns = patterns('',         (r'product/create/$', create_product),      (r'product/list/$', list_product ),      (r'product/edit/(?P
     
      [^/]+)/$', edit_product),      (r'product/view/(?P
      
       [^/]+)/$', view_product),  )
      
     

    继续查看MTV

M不用说了，看T，在templates目录下自动生成了 模型文件[shishang@shishang templates]$ lsbase.html  depotapp[shishang@shishang templates]$ ls depotapp/create_product.html  edit_product.html  list_product.html  view_product.html[shishang@shishang templates]$ pwd/home/shishang/depot/templates查看depotapp中的views文件如下：  4 from django import forms  5 from django.template import RequestContext  6 from django.http import HttpResponse, HttpResponseRedirect  7 from django.template.loader import get_template  8 from django.core.paginator import Paginator  9 from django.core.urlresolvers import reverse 10  11 # app specific files 12  13 from models import * 14 from forms import * 15  16  17 def create_product(request): 18     form = ProductForm(request.POST or None) 19     if form.is_valid(): 20         form.save() 21         form = ProductForm() 22  23     t = get_template('depotapp/create_product.html') 24     c = RequestContext(request,locals()) 25     return HttpResponse(t.render(c)) 26  27  28  29 def list_product(request): 30  31     list_items = Product.objects.all() 32     paginator = Paginator(list_items ,10) 33  34  35     try: 36         page = int(request.GET.get('page', '1')) 37     except ValueError: 38         page = 1 39  40     try: 41         list_items = paginator.page(page) 42     except : 43         list_items = paginator.page(paginator.num_pages) 44  45     t = get_template('depotapp/list_product.html') 46     c = RequestContext(request,locals()) 47     return HttpResponse(t.render(c)) 48  49  50  51 def view_product(request, id): 52     product_instance = Product.objects.get(id = id) 53  54     t=get_template('depotapp/view_product.html') 55     c=RequestContext(request,locals()) 56     return HttpResponse(t.render(c)) 57  58 def edit_product(request, id): 59  60     product_instance = Product.objects.get(id=id) 61  62     form = ProductForm(request.POST or None, instance = product_instance) 63  64     if form.is_valid(): 65         form.save() 66  67     t=get_template('depotapp/edit_product.html') 68     c=RequestContext(request,locals()) 69     return HttpResponse(t.render(c))

    视图的内容比较多，主要是模板，其次还有模型类，form表单等等，基本涵盖了典型的web交互应用内容。

depotapp中forms.py内容  1   2 from django import forms  3 from models import *  4   5   6   7 class ProductForm(forms.ModelForm):  8   9     class Meta: 10         model = Product 11         # exclude = [] # uncomment this line and specify any field to exclude it from the form 12  13     def __init__(self, *args, **kwargs): 14         super(ProductForm, self).__init__(*args, **kwargs) 15

    其实初学的时候建议，将scaffold这块自动生成的代码内容自己编写一遍，加深一下理解。