The first argument to IS_IN_DB must be a DAL object or a Set object -- it
cannot be a function.
Anthony
On Tuesday, June 10, 2014 10:05:21 AM UTC-4, Mandar Vaze wrote:
>
> when using default 'list:reference mytable' all the entries from mytable
> are shown in the dropdown (when using SQLFORM.grid)
> I want to show the list in the drop down after applying some filters
>
> Here is an example :
>
> db.define_table('parent',
> Field('fname', 'string'),
> Field('lname', 'string'),
> format='%(fname)s %(lname)s'
> )
>
> def get_parents(lname):
> return db(db.parent.lname == lname)
>
> db.define_table('child',
> Field('first_name', 'string'),
> Field('last_name', 'string'),
> Field('parents', 'reference parent',
> requires=IS_IN_DB(lambda row: get_parents(row.child.
> last_name), 'parent._format')),
> format='%(fname)s %(lname)s'
> )
>
>
> Here the idea is the when associating an entry from parent table - only
> those values are shown where last name of child matches that of the parent
> Obviously the example is "made up" - real scenario is bit complicated -
> but I am getting following error :
>
> AttributeError: 'function' object has no attribute 'db'
>
>
>
> web2py™ Version 2.9.5-stable+timestamp.2014.03.16.02.35.39
>
> Traceback
>
> Traceback (most recent call last):
> File "/path/to/web2py/gluon/restricted.py", line 220, in restricted
> exec ccode in environment
> File "/path/to/web2py/applications/parents/controllers/appadmin.py"
> <http://127.0.0.1:8080/admin/default/edit/parents/controllers/appadmin.py>,
> line 674, in <module>
> File "/path/to/web2py/gluon/globals.py", line 385, in <lambda>
> self._caller = lambda f: f()
> File "/path/to/web2py/applications/parents/controllers/appadmin.py"
> <http://127.0.0.1:8080/admin/default/edit/parents/controllers/appadmin.py>,
> line 153, in insert
> form = SQLFORM(db[table], ignore_rw=ignore_rw)
> File "/path/to/web2py/gluon/sqlhtml.py", line 1151, in __init__
> inp = self.widgets.options.widget(field, default)
> File "/path/to/web2py/gluon/sqlhtml.py", line 273, in widget
> options = requires[0].options()
> File "/path/to/web2py/gluon/validators.py", line 559, in options
> self.build_set()
> File "/path/to/web2py/gluon/validators.py", line 531, in build_set
> table = self.dbset.db[self.ktable]
> AttributeError: 'function' object has no attribute 'db'
>
> I am OK to use "list:string" with IS_IN_SET() as well - but I am unable to
> use "lambda row: get_parents(row.child.last_name)"
> I get "function is not iterable" error (Off course I will change
> get_parents() function to return list of strings based on my query)
>
> -Mandar
>
>
--
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)
---
You received this message because you are subscribed to the Google Groups
"web2py-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to web2py+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
