web2py-users Google Group

static filename from id

2010-01-06T06:40:36Z

Hello,
I have db table: SQLFIELD( row_id, string), SQLFIELD(image, upload)
how do I make image name look like row_id + ".jpeg"?
I'm now using SQLFORM.

Re: make web2py_ajax.html support A links

2010-01-06T04:42:57Z

I believe this code trap only links inside .ajax loaded page.
At least my plugin works well with this patch.
Thank you for checking this.

Re: What does form.accepts() do?

2010-01-06T04:26:00Z

aha! Good point. This is one of the problems we had to solve when
designing web2py.
When web2py creates a form, it stores two hidden fields into it:
_formname and _formkey. If a form is submitted it contains _formname.
accepts perform validation only in this case. If a field does not pass
validation an error message is generated and inserted in the form

Re: [web2py:38417] What does form.accepts() do?

2010-01-06T04:23:13Z

obviously if the there is no data form.accepts() returns false.
if form.accepts() #returns true<if form validates> or false<if no post
vars or form validation has errors
...
elif form.errors: # there were errors
-Thadeus
On Tue, Jan 5, 2010 at 10:14 PM, Christopher Helck

Re: Book errata and minor bug in clean sessions script

2010-01-06T04:19:34Z

I guess the book needs some cleanup in this respect.
I normally expire sessions in the model iteself. No cron and no
process.

Re: Validation design question

2010-01-06T04:17:37Z

You need both since there is a small (very small) probability that two
users in different threads pass validation of the same new value and
then both of them reach the db.
On Jan 5, 10:04 pm, Christopher Helck <christopher.he...@gmail.com>
wrote:

Re: DAL Question

2010-01-06T04:16:10Z

You are right. sqlite cannot drop columns and this means web2py cannot
change the contraint from unique=False to unique=False. Although it
will change the validator and it will enforce the contraint in forms.
On Jan 5, 9:43 pm, Christopher Helck <christopher.he...@gmail.com>
wrote:

What does form.accepts() do?

2010-01-06T04:14:57Z

I can not understand form.accepts(). I think it's because my intuitive
understanding of web2py is wrong. Here's how I think it works:
A simple controller function ( index() say) can return a string in which
case web2py will simply serve it up as a web page.
The same function can return a dictionary, in whcih case web2py takes the

Re: Facebook Connect for web2py is ready!

2010-01-06T04:12:47Z

My home internet connection is unusable today. I even have difficulty
reading this posts. I look forward to try this tomorrow!

Re: Book errata and minor bug in clean sessions script

2010-01-06T04:08:02Z

I am a bit of a loss though as to why page 121 provides the following
web2py specific web2py/applications/xxx/cron/c rontab entry example for
expiring sessions:
@hourly root *applications/admin/cron/expir e_sessions.py
AND why page 123 provides an example of how to run web2py crontabs
from /etc/crontab (called 'hard cron' by web2py):

Re: searching, entering many-to-many relationships

2010-01-06T04:07:15Z

Download [link]
It contains a plugin_tagging that is reusable. I have a new version in
the working with some minor improvements that you will be able to swap
when done.
Massimo

Validation design question

2010-01-06T04:04:42Z

Is it better to add validation at the DB level through Field level
constraints like 'unique' or to validate at the form? When would it make
sense to validate at the DB level?
Thanks,
C. Helck

Re: [web2py:38326] Re: DAL Question

2010-01-06T03:43:26Z

I'm able to reproduce the problem.
1. Delete all database files.
2. Create table 'foo' without the unique attribute and add the three rows.
No errors because there is no unique constraint.
3. Add 'unique=True' to table foo's definition and add the three rows. No
error. I guess Sqlite can't update existing tables?

Re: [web2py:38410] Re: UliPad as IDE for web2py

2010-01-06T03:28:46Z

80/20 gets in the way sometimes... 50/50 would be a better goal...
providing reasonable defaults, but also a reasonable way to customize
or rewrite base modules. I say 50/50 because there is NO way any
system can provide everything every developer may ever need. Though
django/werkzeug etc follow the 20/80 rule but requires that everything

Re: UliPad as IDE for web2py

2010-01-06T03:21:56Z

No.
web2py does not do "import yourcontroller"
web2py does something like "execfile(yourcontroller) in environment"
on every request.
There are some optimizations having to do with byte compilation.
Because it executes the code on every request there no need to ever
checks the timestamp.
For instances created in models and controller, a new instance is