Here is an example of what I'm trying to do...
Don't forget to install the plugins....
*IN CONTROLLER*
def index():
form = SQLFORM(db.product)
if form.accepts(request.vars, session):
session.flash = 'submitted %s' % form.vars
redirect(URL('index'))
return dict(form=form,
categories=SQLTABLE(db().select(db.category.ALL)),
colors=SQLTABLE(db(db.color.id > 0)(db.color.category ==
db.category.id
).select(db.color.id, db.category.name,
db.color.name)))
*IN MODEL*
from plugin_lazy_options_widget import lazy_options_widget
from plugin_suggest_widget import suggest_widget
db = DAL('sqlite:memory:')
db.define_table('category', Field('name'))
db.define_table('color', Field('category', db.category), Field('name'))
db.define_table('hue', Field('color', db.color), Field('name'))
db.define_table('product',
Field('category', db.category, comment='<- type "A" or "B"'),
Field('color', db.color,
requires=IS_EMPTY_OR(IS_IN_DB(db(db.color.id > 0), 'color.id',
'color.name', zero='---')),
comment='<- select category first'),
Field('hue', db.hue,
requires=IS_EMPTY_OR(IS_IN_DB(db(db.hue.id > 0), 'hue.id',
'hue.name', zero='---')),
comment='<- select color first'),)
db.category.bulk_insert([{'name':'A'}, {'name':'B'}])
for category in db(db.category.id > 0).select():
_id = category.id
if category.name == 'A':
db.color.bulk_insert([{'category': _id, 'name':'red'}, {'category':
_id, 'name':'blue'}])
elif category.name == 'B':
db.color.bulk_insert([{'category': _id, 'name':'green'}])
for color in db(db.color.id > 0).select():
_id = color.id
if color.name == 'red':
db.hue.bulk_insert([{'color': _id, 'name' : 'shiny'},{'color': _id,
'name': 'dull'}])
elif color.name == 'blue':
db.hue.bulk_insert([{'color': _id, 'name' : 'glossy'},{'color':
_id, 'name': 'dark'}])
elif color.name == 'green':
db.hue.bulk_insert([{'color': _id, 'name' : 'opaque'},{'color':
_id, 'name': 'light'}])
db.product.category.widget = suggest_widget(db.category.name,
id_field=db.category.id,
limitby=(0, 10), min_length=1)
################################ The core
######################################
# The lazy_options_widget receives js events
# called "product_category__selected" and "product_category__unselected"
# which will be triggered by the above suggest_widget.]
# You can also pass user_signature and hmac_key arguments for authorization
in ajax
db.product.color.widget = lazy_options_widget(
'product_category__selected',
'product_category__unselected',
lambda category_id: (db.color.category == category_id),
request.vars.category,
orderby=db.color.id,
# If you want to process ajax requests at the time of the
object construction (not at the form rendered),
# specify your target field in the following:
field=db.product.color,
)
################################################################################
db.product.hue.widget = lazy_options_widget(
'product_color__selected', 'product_color__unselected',
lambda color_id: (db.hue.color == color_id),
request.vars.color,
orderby=db.hue.id,
# If you want to process ajax requests at the time of the
object construction (not at the form rendered),
# specify your target field in the following:
field=db.product.hue,
)
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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