[web2py] Re: Bug in database administration
This is not a bug but a limitation in syntax:
You cannot do:
db.define_table('cgc_schedule',
...
format='%(training.short_title)s (%(training_date)s)')
because only fields of the table itself can be used in the representation
of a record. In order to retrieve training.short_title for a record of
table cgc_schedule, web2py would have to go a recursive select and we do
not want to do that silently because can be expensive. There is another
notation:
db.define_table('cgc_schedule',
...
format=lambda row: '%s %s' % (row.training.short_title,
row.training_date))
and this will do what you ask since it is more explicit.
On Thursday, 7 February 2013 09:31:56 UTC-6, Calycé wrote:
Hi all,
I have an error in the database administration when using the following
code in db.py:
db.define_table('cgc_service_categories',
Field('category', 'string', required=True),
Field('description', 'text', required=True),
Field('image', 'upload', required=True),
Field('display_order', 'integer'),
Field('link', 'string'),
format='%(category)s')
db.define_table('cgc_trainings',
Field('category', db.cgc_service_categories),
Field('disporder', 'integer'),
Field('title', 'string', required=True),
Field('short_title', 'string', required=True),
Field('duration', 'string', required=True),
Field('planning', 'text', required=True),
Field('typical', 'text'),
Field('price', 'integer'),
Field('training_checks', 'boolean'),
Field('image', 'upload'),
format='%(short_title)s')
db.define_table('cgc_schedule',
Field('training', db.cgc_trainings),
Field('location', 'string'),
Field('training_date', 'date'),
Field('vacancies', 'integer'),
format='%(training.short_title)s (%(training_date)s)')
db.define_table('cgc_booking',
Field('training_date', db.cgc_schedule),
Field('company', 'string'),
Field('first_name', 'string'),
Field('last_name', 'string'),
Field('phone', 'string'),
Field('email', 'string'),
Field('seats', 'integer'))
It works when I browse the existing records, but if I try to edit a record
or insert a new one with the database administration in the cgc_booking
table, I receive the following error:
type 'exceptions.AttributeError' 'Table' object has no attribute
'training.short_title'
If I change the format for the cgc_schedule table to %(training)s
(%(training_date)s) it works but having only the id is useless in this
case.
Is it a bug in the database administration or am I doing something wrong ?
BTW, I'm using 2.3.2.
Thanks for your help.
Calycé
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[web2py] Re: Bug in database administration
I found a solution/workaround.
For the records, I changed the format for the table cgc_schedule.
Old one:
format='%(training.short_title)s (%(training_date)s)'
New one:
format=lambda row: row.training.short_title + ' (' + row.training_date.
strftime('%d-%m-%Y') + ')'
With that new format, it works.
I'm still wondering why I need to use a lambda to have it working. If
someone has a clue I'm all ears ;-)
On Thursday, February 7, 2013 4:31:56 PM UTC+1, Calycé wrote:
Hi all,
I have an error in the database administration when using the following
code in db.py:
db.define_table('cgc_service_categories',
Field('category', 'string', required=True),
Field('description', 'text', required=True),
Field('image', 'upload', required=True),
Field('display_order', 'integer'),
Field('link', 'string'),
format='%(category)s')
db.define_table('cgc_trainings',
Field('category', db.cgc_service_categories),
Field('disporder', 'integer'),
Field('title', 'string', required=True),
Field('short_title', 'string', required=True),
Field('duration', 'string', required=True),
Field('planning', 'text', required=True),
Field('typical', 'text'),
Field('price', 'integer'),
Field('training_checks', 'boolean'),
Field('image', 'upload'),
format='%(short_title)s')
db.define_table('cgc_schedule',
Field('training', db.cgc_trainings),
Field('location', 'string'),
Field('training_date', 'date'),
Field('vacancies', 'integer'),
format='%(training.short_title)s (%(training_date)s)')
db.define_table('cgc_booking',
Field('training_date', db.cgc_schedule),
Field('company', 'string'),
Field('first_name', 'string'),
Field('last_name', 'string'),
Field('phone', 'string'),
Field('email', 'string'),
Field('seats', 'integer'))
It works when I browse the existing records, but if I try to edit a record
or insert a new one with the database administration in the cgc_booking
table, I receive the following error:
type 'exceptions.AttributeError' 'Table' object has no attribute
'training.short_title'
If I change the format for the cgc_schedule table to %(training)s
(%(training_date)s) it works but having only the id is useless in this
case.
Is it a bug in the database administration or am I doing something wrong ?
BTW, I'm using 2.3.2.
Thanks for your help.
Calycé
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[web2py] Re: Bug in database administration
oops, looks like you were faster than me ;-)
Anyway thanks for your help.
On Thursday, February 7, 2013 5:39:24 PM UTC+1, Massimo Di Pierro wrote:
This is not a bug but a limitation in syntax:
You cannot do:
db.define_table('cgc_schedule',
...
format='%(training.short_title)s (%(training_date)s)')
because only fields of the table itself can be used in the representation
of a record. In order to retrieve training.short_title for a record of
table cgc_schedule, web2py would have to go a recursive select and we do
not want to do that silently because can be expensive. There is another
notation:
db.define_table('cgc_schedule',
...
format=lambda row: '%s %s' % (row.training.short_title,
row.training_date))
and this will do what you ask since it is more explicit.
On Thursday, 7 February 2013 09:31:56 UTC-6, Calycé wrote:
Hi all,
I have an error in the database administration when using the following
code in db.py:
db.define_table('cgc_service_categories',
Field('category', 'string', required=True),
Field('description', 'text', required=True),
Field('image', 'upload', required=True),
Field('display_order', 'integer'),
Field('link', 'string'),
format='%(category)s')
db.define_table('cgc_trainings',
Field('category', db.cgc_service_categories),
Field('disporder', 'integer'),
Field('title', 'string', required=True),
Field('short_title', 'string', required=True),
Field('duration', 'string', required=True),
Field('planning', 'text', required=True),
Field('typical', 'text'),
Field('price', 'integer'),
Field('training_checks', 'boolean'),
Field('image', 'upload'),
format='%(short_title)s')
db.define_table('cgc_schedule',
Field('training', db.cgc_trainings),
Field('location', 'string'),
Field('training_date', 'date'),
Field('vacancies', 'integer'),
format='%(training.short_title)s (%(training_date)s)')
db.define_table('cgc_booking',
Field('training_date', db.cgc_schedule),
Field('company', 'string'),
Field('first_name', 'string'),
Field('last_name', 'string'),
Field('phone', 'string'),
Field('email', 'string'),
Field('seats', 'integer'))
It works when I browse the existing records, but if I try to edit a
record or insert a new one with the database administration in the
cgc_booking table, I receive the following error:
type 'exceptions.AttributeError' 'Table' object has no attribute
'training.short_title'
If I change the format for the cgc_schedule table to %(training)s
(%(training_date)s) it works but having only the id is useless in this
case.
Is it a bug in the database administration or am I doing something wrong ?
BTW, I'm using 2.3.2.
Thanks for your help.
Calycé
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