db.define_table(
'sale',
Field('user_id', db.auth_user),
Field('start_date', 'date', requires=IS_DATE()),
Field('end_date', 'date', requires=IS_DATE()),
Field('start_time', 'time', requires = IS_TIME()),
Field('end_time', 'time', requires = IS_TIME()))
db.sale.user_id.requires = IS_IN_DB(db, 'auth_user.id')
db.define_table(
'product',
Field('sale_id', db.sale),
Field('name', requires = IS_NOT_EMPTY()),
Field('price'),
Field('description','text'),
Field('image', 'upload', default=''),
format = '%(name)s %(price)s')
db.product.sale_id.requires = IS_IN_DB(db, 'sale.id')
Thanks Cliff,
This is an improvement on what I had. But I am not sure if I applied the
code correctly because the 'user_id' and 'sale_id' have been converted into
a drop-down list, as opposed to being automatically populated.
On Wednesday, October 16, 2013 4:18:52 PM UTC-5, Cliff Kachinske wrote:
>
> This is a problem:
>
> db.define_table(
> 'sale',
> Field('id', db.auth_user, default=auth.user_id),
>
> How about this instead:
> db.define_table(
> 'sale',
> Field('user_id', db.auth_user, requires=IS_IN_DB( # See "Forms and
> Validators in the Fine Manual
>
> Also do this:
> db.define_table(
> 'product',
> Field('sale_id', db.sale, requires=IS_IN_DB( # See "Forms and
> Validators in the Fine Manual
>
> Also I would not use the double data type for currency. Use instead Python
> decimal which works as you expect decimal numbers to work. Or you could
> store the, for example, US currency as pennies and put in the decimal
> marker when you display the value and strip it out when you work with it on
> the back end.
>
> Whatever comes in on request.post_vars and ends up in form.vars is a
> string. Your database adapter takes care of conversions.
>
>
>
>
> On Wednesday, October 16, 2013 1:36:53 PM UTC-4, raferbop wrote:
>>
>> Thanks Stifan,
>>
>> But that doesn't work either, because the product_id now displays in the
>> sale form. I need to generate the sale_id first, and then have sow in the
>> product table/form. Right now, it just shows up blank.
>>
>> On Wednesday, October 16, 2013 11:08:58 AM UTC-5, 黄祥 wrote:
>>>
>>> yeah, my pov is because your product never save the sale id. imho, i
>>> think your code should be :
>>> db.define_table(
>>> 'sale',
>>> Field('product_id', 'reference product'),
>>> Field('user_id', db.auth_user, default=auth.user_id),
>>> Field('start_date', 'date', requires=IS_DATE()),
>>> Field('end_date', 'date', requires=IS_DATE()),
>>> Field('start_time', 'time', requires = IS_TIME()),
>>> Field('end_time', 'time', requires = IS_TIME()))
>>>
>>> db.define_table(
>>> 'product',
>>> Field('name', requires = IS_NOT_EMPTY()),
>>> Field('price', 'double', default=0.00),
>>> Field('description','text'),
>>> Field('image', 'upload', default=''),
>>> format = '%(name)s %(price)s')
>>>
>>> because 1 sale has many product and each product belongs to sale, isn't
>>> it?
>>> 1 more thing please don't use id as your field name, because by default
>>> web2py use it as a primary key.
>>> taken from book :
>>>
>>> - Each table must have a unique auto-increment integer field called
>>> "id"
>>> - Records must be referenced exclusively using the "id" field.
>>>
>>> ref:
>>>
>>> http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#Legacy-databases-and-keyed-tables
>>>
>>> best regards,
>>> stifan
>>>
>>
--
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