django-groundwork

我的环境是windows7 + python34 + django1.8

下面两篇文章提到了django的scaffold，感觉是一个挺不错的功能：

Django实战（3）：Django也可以有scaffold

Django1.5+Python3.3下groundwork的使用

于是去Github下载了django-groundwork（居然是四年以前更新过-_-!!!），解压后复制整个django-groundwork文件夹到当前项目文件夹下。

再设置settings.py：

INSTALLED_APPS = (
    # ...
    'django-groundwork',
)

然后运行:

$ python manage.py groundwork depot Product

 出现了如下错误：

E:workspacedepot>python manage.py groundwork depotapp Product
usage: manage.py groundwork [-h] [--version] [-v {0,1,2,3}]
[--settings SETTINGS] [--pythonpath PYTHON
[--traceback] [--no-color]
manage.py groundwork: error: unrecognized arguments: depotapp Product

查看django官方文档，发现django1.8的manage.py的命令行参数解析模块已经由optparse换成了argparse

所以，四年前写的groundwork自然是不能运行了。好吧，自己动手，丰衣足食。

我把里面的两个文件做了必要的修改：

# -------------------- #
# project/urls.py file section #
# -------------------- #

PROJECT_URL_CONFIG = """
"
urlpatterns += [url(r'^%(app)s/', include('%(app)s.urls', namespace='%(app)s')),
]
"
"""

# -------------------- #
# urls.py file section #
# -------------------- #


URL_IMPORTS = """
from django.conf.urls import url
from .models import *
from .views import *

urlpatterns =[
"""

URL_CRUD_CONFIG = """
    url(r'^%(model)s/create/$', create_%(model)s, name='create_%(model)s'),
    url(r'^%(model)s/list/$', list_%(model)s, name='list_%(model)s'),
    url(r'^%(model)s/edit/(?P<id>[^/]+)/$', edit_%(model)s, name='edit_%(model)s'),
    url(r'^%(model)s/view/(?P<id>[^/]+)/$', view_%(model)s, name='view_%(model)s'),
    """ 

URL_END = """
]
"""



# --------------------- #
# forms.py file section #
# --------------------- #

FORMS_IMPORTS = """
from django import forms
from .models import *

"""

FORMS_MODELFORM_CONFIG = """

class %(modelClass)sForm(forms.ModelForm):
    
    class Meta:
        model = %(modelClass)s    
        exclude = [] # uncomment this line and specify any field to exclude it from the form

    def __init__(self, *args, **kwargs):
        super(%(modelClass)sForm, self).__init__(*args, **kwargs)

"""        





# --------------------- #
# views.py file section #
# --------------------- #

VIEWS_IMPORTS = """
# Create your views here.

from django import forms
from django.template import RequestContext
from django.http import HttpResponse, HttpResponseRedirect
from django.template.loader import get_template
from django.core.paginator import Paginator
from django.core.urlresolvers import reverse

# app specific files

from .models import *
from .forms import *
"""

VIEWS_CREATE = """

def create_%(model)s(request):
    form = %(modelClass)sForm(request.POST or None)
    if form.is_valid():
        form.save()
        form = %(modelClass)sForm()

    t = get_template('%(app)s/create_%(model)s.html')
    c = RequestContext(request,locals())
    return HttpResponse(t.render(c))

"""

VIEWS_LIST = """

def list_%(model)s(request):
  
    list_items = %(modelClass)s.objects.all()
    paginator = Paginator(list_items ,10)


    try:
        page = int(request.GET.get('page', '1'))
    except ValueError:
        page = 1

    try:
        list_items = paginator.page(page)
    except :
        list_items = paginator.page(paginator.num_pages)

    t = get_template('%(app)s/list_%(model)s.html')
    c = RequestContext(request,locals())
    return HttpResponse(t.render(c))

"""


VIEWS_UPDATE = """
def edit_%(model)s(request, id):

    %(model)s_instance = %(modelClass)s.objects.get(id=id)

    form = %(modelClass)sForm(request.POST or None, instance = %(model)s_instance)

    if form.is_valid():
        form.save()

    t=get_template('%(app)s/edit_%(model)s.html')
    c=RequestContext(request,locals())
    return HttpResponse(t.render(c))
"""

VIEWS_VIEW = """

def view_%(model)s(request, id):
    %(model)s_instance = %(modelClass)s.objects.get(id = id)

    t=get_template('%(app)s/view_%(model)s.html')
    c=RequestContext(request,locals())
    return HttpResponse(t.render(c))
"""


# ------------------------- #
# templates.py file section #
# ------------------------- #



TEMPLATES_CREATE = """
{%% extends "base.html" %%}

{%% block title %%} %(modelClass)s - Create {%% endblock %%}

{%% block heading %%}<h1>  %(modelClass)s - Create </h1>  {%% endblock %%}

{%% block content %%} 
<table>
<form action="" method="POST"> {%% csrf_token %%}
  {{form}}
  <tr>
    <td colspan="2" align="right"><input type="submit" value="Create"/></td>
  </tr>
</form>
</table>
{%% endblock %%}
"""

TEMPLATES_LIST = """
{%% extends "base.html" %%}

{%% block title %%}  %(modelClass)s -- List {%% endblock %%}

{%% block heading %%} 
<h1> %(modelClass)s</h1>
<h2> List Records</h2>
{%% endblock %%}
{%% block content %%} 

<table>
<thead>
<tr><th>Record</th><th colspan="3">Actions</th></tr>
{%% for item in list_items.object_list %%}
  <tr><td>  {{item}}</td> <td><a href="{%% url '%(app)s:view_%(model)s' item.id %%}">Show</a> </td> <td><a href="{%% url '%(app)s:edit_%(model)s' item.id %%}">Edit</a></tr>
{%% endfor %%}
<tr><td colspan="3"> <a href="{%% url '%(app)s:create_%(model)s' %%}">Add New</a></td></tr>
</table>

<div align="center">
{%% if list_items.has_previous %%}
    <a href="?page={{ list_items.previous_page_number }}">Previous</a>
{%% endif %%}

<span class="current">
    Page {{ list_items.number }} of {{ list_items.paginator.num_pages }}.
</span>

{%% if list_items.has_next %%}
        <a href="?page={{ list_items.next_page_number }}">Next</a>
{%% endif %%}

</div>
{%% endblock %%}
"""


TEMPLATES_EDIT = """
{%% extends "base.html" %%}

{%% block title %%} %(modelClass)s - Edit {%% endblock %%}

{%% block heading %%} <h1> %(modelClass)s</h1><h2> Edit </h2> {%% endblock %%}
{%% block content %%} 
<table>
<form action="" method="POST"> {%% csrf_token %%}
  {{form}}
  <tr>
    <td colspan="2" align="right"><input type="submit" value="Save"/></td>
  </tr>
</form>
</table>
{%% endblock %%}
"""

TEMPLATES_VIEW = """
{%% extends "base.html" %%}

{%% block title %%} %(modelClass)s - View {%% endblock %%}

{%% block heading %%} <h1> %(modelClass)s</h1><h2>View</h2>  {%% endblock %%}
{%% block content %%} 
<table>
{{ %(model)s_instance }}
</table>
{%% endblock %%}
"""

TEMPLATES_BASE = """
<!DOCTYPE html>
<html>
<head>
    <meta charset=UTF-8"/>
    <meta name="description" content=""/>
    <meta name="keywords" content="" />
    <meta name="author" content="" />
    <title>
        {% block title %} {% endblock %}
    </title>
      <style type="text/css"> 
        html * { padding:0; margin:0; }
        body * { padding:10px 20px; }
        body * * { padding:0; }
        body { font:small sans-serif; }
        body>div { border-bottom:1px solid #ddd; }
        h1 { font-weight:normal; }
        h2 { margin-bottom:.8em; }
        h2 span { font-size:80% ; color:#666; font-weight:normal; }
        h3 { margin:1em 0 .5em 0; }
        h4 { margin:0 0 .5em 0; font-weight: normal; }
        td {font-size:1em;  padding:3px 17px 2px 17px;}
        ul { margin-left: 2em; margin-top: 1em; }
        #summary { background: #e0ebff; }
        #summary h2 { font-weight: normal; color: #666; }
        #explanation { background:#eee; }
        #content { background:#f6f6f6; }
        #summary table { border:none; background:transparent; }
      </style> 
</head>
<body>


<div id="summary">
{% block heading %}  
{% endblock %}
</div>

<div id="content">
{% block content %} 


{% endblock %}
</div>

<div id="explanation" align="center">
django-groundwork
</div>

</body>
</html>
"""

from django.core.management.base import BaseCommand, CommandError
from django.db import models
from .placeholders import *
import os
    
class Command(BaseCommand):
    help = "Usage : manage.py groundwork <app> <model>"

    def add_arguments(self, parser):
        parser.add_argument('app', nargs='+', type=str)
        parser.add_argument('model', nargs='+', type=str)
        
    def handle(self, *args, **options):
        "Usage : manage.py groundwork <app> <model>"

        app = options['app'][0]

        model_names = options['model']

        
        PROJECT_ROOT = os.getcwd() 
        PROJECT_NAME = os.path.basename(PROJECT_ROOT)
        TEMPLATE_DIR = os.path.join(PROJECT_ROOT , app, 'templates')
        
        model_instances = [ models.get_model(app, x) for x in model_names ]

        # url config
        urls = URL_IMPORTS

        # Generate CRUD urls for each model
        for model_instance in model_instances:
            urls += URL_CRUD_CONFIG % {'model':model_instance._meta.object_name.lower(), 'modelClass': model_instance._meta.object_name } 

        urls += URL_END

        # write to urls.py
        f = open( os.path.join (PROJECT_ROOT , app, 'urls.py') , 'w')
        f.write(urls)
        f.close()
        
        # append to root urlconf
        f = open( os.path.join(PROJECT_ROOT, PROJECT_NAME, 'urls.py'), 'a')
        f.write( PROJECT_URL_CONFIG % {'app': app } )
        f.close()



        # forms
        forms_content = FORMS_IMPORTS
        for model_instance in model_instances:
            forms_content += FORMS_MODELFORM_CONFIG % { 'modelClass' : model_instance._meta.object_name }

        formspath = os.path.join (PROJECT_ROOT, app, 'forms.py')
        f = open( formspath , 'w')
        f.write(forms_content)
        f.close()


        # views
        views_content = VIEWS_IMPORTS

        for model_instance in model_instances:
            views_content += VIEWS_CREATE 
            views_content += VIEWS_LIST
            views_content += VIEWS_VIEW
            views_content += VIEWS_UPDATE
            
            views_content = views_content %  {'model':model_instance._meta.object_name.lower(), 'modelClass': model_instance._meta.object_name, 'app': app } 

        # write to views.py
        viewspath = os.path.join (PROJECT_ROOT, app, 'views.py')
        f = open( viewspath, 'w')
        f.write(views_content)
        f.close()


        # Templates
        
        template_dir = os.path.join(TEMPLATE_DIR, app )
        if not os.path.exists(template_dir):
            os.makedirs(template_dir)
        
        self.stdout.write("Generate base template? [Y/N]?")
        yn = input()
        if yn.lower() == 'y':
            f = open(os.path.join(TEMPLATE_DIR, 'base.html') , 'w')
            f.write(TEMPLATES_BASE)
            f.close()
            
        for model_instance in model_instances:
            f = open(os.path.join( TEMPLATE_DIR, app, 'create_%s.html' % (model_instance._meta.object_name.lower()) ) ,'w')
            f.write( TEMPLATES_CREATE  %  { 'modelClass' : model_instance._meta.object_name } )
            f.close()
            
            f = open(os.path.join( TEMPLATE_DIR, app, 'list_%s.html' % (model_instance._meta.object_name.lower()) ) ,'w')
            f.write( TEMPLATES_LIST  %  { 'modelClass' : model_instance._meta.object_name ,'model' : model_instance._meta.object_name.lower(), 'app' : app} )
            f.close()
            
            f = open(os.path.join( TEMPLATE_DIR, app, 'edit_%s.html' % (model_instance._meta.object_name.lower()) ) ,'w') 
            f.write( TEMPLATES_EDIT  %  { 'modelClass' : model_instance._meta.object_name } )
            f.close()
            
            f = open(os.path.join( TEMPLATE_DIR, app, 'view_%s.html' % (model_instance._meta.object_name.lower()) ) , 'w')
            f.write( TEMPLATES_VIEW  %  { 'modelClass' : model_instance._meta.object_name,  'model' : model_instance._meta.object_name.lower()} )
            f.close()

保存，然后运行：

$ python manage.py groundwork depot Product

 不用再做任何修改，操作。启动服务器：

$ python manage.py runserver

 在浏览器地址栏输入：

localhost:8000/depot/product/list

您会看到如下效果图：

 点击 Add New，进入create页面

 最后为了方便大家使用，我Fork了原来的django-groundwork到我的Github，并做了相应的修改。祝使用愉快！