Hi,
I am trying to populate a drop down box so that a user may choose a
"featured Image" from a collection of images. There are multiple
collections, so I need to filter out the other images that are in the
different collections. The code I have is shown below:
db.geo_collection.f_featured_img.requires=IS_IN_DB(db,
(db.geo_item.f_collection_id == db.geo_collection.id),lambda row: '%s' %
row.id + " - " + row.f_name)
What I had in mind is that the program would go through every item in the
database, and compare its collection id with the collection's id that we
are currently looking at. If the item passes this boolean statement, then
it is added to the dropdown box.
When I do this, it states that there are too many values to unpack.
Traceback below:
Traceback (most recent call last):
File "/home/SIRI/web2py/gluon/restricted.py", line 217, in restricted
exec ccode in environment
File "/home/SIRI/web2py/applications/mqr/models/db_wizard.py"
<https://siri.pythonanywhere.com/admin/default/edit/mqr/models/db_wizard.py>,
line 149, in <module>
db.geo_collection.f_featured_img.requires=IS_IN_DB(db,
(db.geo_item.f_collection_id == db.geo_collection.id),lambda row: '%s' % row.id
+ " - " + row.f_name)
File "/home/SIRI/web2py/gluon/validators.py", line 497, in __init__
(ktable, kfield) = str(field).split('.')
ValueError: too many values to unpack
I thought that using the 'IS_IN_DB' command might be messing with this, so
I changed it to 'IS_IN_SET'. I got this error instead:
Traceback (most recent call last):
File "/home/SIRI/web2py/gluon/restricted.py", line 217, in restricted
exec ccode in environment
File "/home/SIRI/web2py/applications/mqr/controllers/cms.py"
<https://siri.pythonanywhere.com/admin/default/edit/mqr/controllers/cms.py>,
line 478, in <module>
File "/home/SIRI/web2py/gluon/globals.py", line 372, in <lambda>
self._caller = lambda f: f()
File "/home/SIRI/web2py/gluon/tools.py", line 3239, in f
return action(*a, **b)
File "/home/SIRI/web2py/applications/mqr/controllers/cms.py"
<https://siri.pythonanywhere.com/admin/default/edit/mqr/controllers/cms.py>,
line 26, in display_manage
oncreate=coll_create,onupdate=coll_create)
File "/home/SIRI/web2py/gluon/sqlhtml.py", line 2764, in smartgrid
user_signature=user_signature, **kwargs)
File "/home/SIRI/web2py/gluon/sqlhtml.py", line 2093, in grid
update_form = SQLFORM(table, record, **sqlformargs)
File "/home/SIRI/web2py/gluon/sqlhtml.py", line 1145, in __init__
inp = self.widgets.options.widget(field, default)
File "/home/SIRI/web2py/gluon/sqlhtml.py", line 270, in widget
options = requires[0].options()
File "/home/SIRI/web2py/gluon/validators.py", line 428, in options
items = [(k, self.labels[i]) for (i, k) in enumerate(self.theset)]
TypeError: 'Query' object does not support indexing
Any ideas on how I could do this? I feel like it's a really simple tweak,
but I'm just not seeing it. Any help would be fantastic.
--
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