R – How to modify attributes of forms generated by webapp (Google App Engine)

formsgoogle-app-engineweb-applications

Here are model and form classes from example:

http://code.google.com/appengine/articles/djangoforms.html

class Item(db.Model):
  name = db.StringProperty()
  quantity = db.IntegerProperty(default=1)
  target_price = db.FloatProperty()
  priority = db.StringProperty(default='Medium',choices=[
    'High', 'Medium', 'Low'])
  entry_time = db.DateTimeProperty(auto_now_add=True)
  added_by = db.UserProperty()

class ItemForm(djangoforms.ModelForm):
  class Meta:
    model = Item
    exclude = ['added_by']

It will be rendered as table rows.

Can I change how they will be rendered (change width or make it to be list instead of table row or anything…)?

Best Solution

Take a look at the Django forms docs, here. The docs are for 1.0, but most of it applies to the 0.91 version bundled with App Engine, too.

The short answer to your question: form.as_p will generate an HTML representation of the form as a series of <p> tags, while form.as_ul will generate a series of <ul> tags and form.as_table will generate a table.

Boilerplate files

These hardly vary between projects
app.yaml: direct all non-static requests to main.py
main.py: initialize app and send it all requests

Project lay-out

static/*: static files; served directly by App Engine
myapp/*.py: app-specific python code
- views.py, models.py, tests.py, __init__.py, and more
templates/*.html: templates (or myapp/templates/*.html)

Here are some code examples that may help as well:

main.py

import wsgiref.handlers

from google.appengine.ext import webapp
from myapp.views import *

application = webapp.WSGIApplication([
  ('/', IndexHandler),
  ('/foo', FooHandler)
], debug=True)

def main():
  wsgiref.handlers.CGIHandler().run(application)

myapp/views.py

import os
import datetime
import logging
import time

from google.appengine.api import urlfetch
from google.appengine.ext.webapp import template
from google.appengine.api import users
from google.appengine.ext import webapp
from models import *

class IndexHandler(webapp.RequestHandler):
  def get(self):
    date = "foo"
    # Do some processing        
    template_values = {'data': data }
    path = os.path.join(os.path.dirname(__file__) + '/../templates/', 'main.html')
    self.response.out.write(template.render(path, template_values))

class FooHandler(webapp.RequestHandler):
  def get(self):
    #logging.debug("start of handler")

myapp/models.py

from google.appengine.ext import db

class SampleModel(db.Model):

I think this layout works great for new and relatively small to medium projects. For larger projects I would suggest breaking up the views and models to have their own sub-folders with something like:

Project lay-out

static/: static files; served directly by App Engine
- js/*.js
- images/*.gif|png|jpg
- css/*.css
myapp/: app structure
- models/*.py
- views/*.py
- tests/*.py
- templates/*.html: templates

Best Solution

Related Solutions

Google-app-engine – Deleting a Google App Engine application

Python – Project structure for Google App Engine

Boilerplate files

Project lay-out

main.py

myapp/views.py

myapp/models.py

Project lay-out

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