It can be done. we do it for GAE-SQL and for heroku but it leads to bigger
problems.
On Friday, 14 December 2012 09:53:25 UTC-6, VP wrote:
>
> In the a common mistake in migrations or simply moving things around is
> moving the database but not the metadata itself.
>
> I am wondering if it is better to keep the metadata (.tables files) IN the
> database itself instead of on the filesystem?
>
>
>
> On Wednesday, December 12, 2012 9:41:22 PM UTC-6, Massimo Di Pierro wrote:
>>
>> Good catch. Yet, default values are not validated (for speed reasons)
>> unless they go through a form.
>>
>> On Wednesday, 12 December 2012 21:34:12 UTC-6, David Tucker wrote:
>>>
>>> Finally, I figured out the issue! In order to store a time() from epoch,
>>> your db type cannot be 'time' but instead must be 'float'
>>> The crud.create form I was generating let the erroneous value thru, and
>>> the db wasn't liking it; however, the form within appadmin caught the issue
>>> saying it needed hh:mm:ss. I imagine what happened was I set the default
>>> value for the field to time() and the type to 'time' and it tried to unpack
>>> a datetime.time from the float only finding 2 values (left & right of
>>> decimal). In my prior post, the default value was 0, hence need more than 1
>>> value to unpack. not sure this is relevant to the originally posted
>>> problem, but hopefully it'll help someone in the future.
>>>
>>> what a noob...
>>>
>>>
>>> On Wednesday, December 12, 2012 12:57:35 PM UTC-8, David Tucker wrote:
>>>>
>>>> I've narrowed down the problem. I dropped the table then added it again
>>>> and started removing fields and doing the create. My problem is a field
>>>> called 'expiration' that I want to set automatically for the user. My
>>>> model
>>>> includes 3 tables: tiers, groups, and accounts. Each account references
>>>> the
>>>> group it's in (every account is in a group), and each group references a
>>>> tier. When an account is created, I want the expiration field of the
>>>> account to be:
>>>>
>>>> (time since epoch in seconds)+(the new account's assigned group's
>>>> tier's TTL [days] in seconds) which I have tried to achieve like so:
>>>>
>>>>
>>>> Field('expiration', 'time',
>>>>
>>>> required=True,
>>>>
>>>> notnull=True,
>>>>
>>>> default=time(),
>>>>
>>>> writable=False,
>>>>
>>>> represent=lambda expiration, row:
>>>> datetime.datetime.fromtimestamp(int(expiration)),
>>>>
>>>> compute=lambda row: time()+row.batch.tier.ttl*24*60*60)
>>>>
>>>>
>>>> note that row.batch is the account's reference to a group (but it can't
>>>> be called group since that is a reserved word)
>>>>
>>>> This produced problems with compute, so I circumvented by commenting it
>>>> out and adding this to the creation/insert controller:
>>>>
>>>>
>>>> group = __get_group()
>>>>
>>>> db.accounts.batch.default = group.id
>>>>
>>>> db.accounts.expiration.default = time()+(group.tier.ttl*24*60*60)
>>>>
>>>> form = crud.create(db.accounts, message='Account Created', next=URL(
>>>> 'accounts','review')+'/[id]')
>>>>
>>>>
>>>> I am missing something... because now i'm getting:
>>>> <type 'exceptions.ValueError'> need more than 2 values to unpack
>>>>
>>>> ...stumped.
>>>>
>>>>
>>>> On Wednesday, December 12, 2012 12:18:58 PM UTC-8, David Tucker wrote:
>>>>>
>>>>> I am having a similar problem. I did an insert using crud.create and
>>>>> it went through, but now I get the error described above whenever I do
>>>>> anything related to tht table... I tried this, but my notnull constraint
>>>>> got in the way so I tried:
>>>>>
>>>>> db(db.youtable.id
>>>>> >0).update(thedatetimefield=datetime.datetime.utcnow())
>>>>>
>>>>> and now I'm getting this traceback:
>>>>>
>>>>> Traceback (most recent call last):
>>>>> File "gluon/main.py", line 564, in wsgibase
>>>>> File "gluon/dal.py", line 529, in close_all_instances
>>>>> File "gluon/dal.py", line 509, in close
>>>>> File "gluon/dal.py", line 1652, in commit
>>>>> OperationalError: SQL logic error or missing database
>>>>>
>>>>>
>>>>> Any idea what's going on?
>>>>>
>>>>>
>>>>> On Sunday, April 5, 2009 10:01:13 PM UTC-7, mdipierro wrote:
>>>>>>
>>>>>> Let me guess... you changed a field from 'string' to 'datetime' using
>>>>>> sqlite? sqlite does not enforces field types hence it let you do the
>>>>>> migration even if there was data in there that is not of type
>>>>>> 'datetime'. You need to clean up that column.
>>>>>>
>>>>>> In your model do this
>>>>>>
>>>>>> db(db.youtable.id>0).update(thedatetimefield=None)
>>>>>>
>>>>>> run appadmin once than remove the above line.
>>>>>>
>>>>>> Massimo
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Apr 5, 9:10 pm, "web2py <<<at>>> technicalbloke.com"
>>>>>> <technicalbl...@googlemail.com> wrote:
>>>>>> > Hi,
>>>>>> >
>>>>>> > Somehow (don't ask me how!) I've managed to bork my database :-/
>>>>>> > Appadmin let's me see all my tables except one, when I click on
>>>>>> it's
>>>>>> > name it spews the message below. I don't care about the data
>>>>>> inside,
>>>>>> > I'd just like to have my database rebuilt from the model so what's
>>>>>> the
>>>>>> > best way to do that?
>>>>>> >
>>>>>> > db.my_table.truncate?
>>>>>> > db.my_table.drop?
>>>>>> > delete the contents of the 'databases' folder?
>>>>>> >
>>>>>> > Traceback (most recent call last):
>>>>>> > File "/rahrahrah/web2py/gluon/restricted.py", line 98, in
>>>>>> restricted
>>>>>> > exec ccode in environment
>>>>>> > File "/rahrahrah/web2py/applications/tcrm/views/appadmin.html",
>>>>>> line
>>>>>> > 102, in <module>
>>>>>> > File "/rahrahrah/web2py/gluon/sqlhtml.py", line 605, in __init__
>>>>>> > for (rc, record) in enumerate(sqlrows):
>>>>>> > File "/rahrahrah/web2py/gluon/sql.py", line 2127, in __iter__
>>>>>> > yield self[i]
>>>>>> > File "/rahrahrah/web2py/gluon/sql.py", line 2082, in __getitem__
>>>>>> > str(value)[:10].strip().split('-')]
>>>>>> > ValueError: need more than 1 value to unpack
>>>>>> >
>>>>>> > Cheers,
>>>>>> >
>>>>>> > Roger.
>>>>>
>>>>>
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