I have a database with three tables, switch, hba and port. The latter
is defined as:
db.define_table('port',
SQLField('switch', db.switch),
SQLField('name', 'string'),
SQLField('hba', db.hba),
)
db.port.name.requires = IS_NOT_EMPTY()
db.port.hba.requires = IS_IN_DB(db, 'hba.name')
db.port.switch.requires = IS_IN_DB(db, 'switch.name')
Perhaps foolishly, I want to use the same page to display all of the
ports for a given switch or for a given hba, so I added 'subset' and
'subset_id' to my request:
http://127.0.0.1:8000/env_layout/default/ports?subset=switch&subset_id=1
Here's the code from my controller:
def ports():
subset, subset_id = request.vars.subset, request.vars.subset_id
if request.vars.subset:
ports = db().select(db.port[subset] == subset_id,
orderby=db.port.name)
else:
ports = db().select(db.port.ALL, orderby=db.port.name)
return dict(records=ports, subset=subset, subset_id=subset_id)
And here's my ports.html:
{{extend "layout.html"}}
<h1>Select a port...</h1>
<table>
<tr>
{{for field in ['name', 'switch', 'hba']:}}
{{if field != subset:}}
<th>{{=field}}</th>
{{pass}}
{{pass}}
</tr>
{{for port in records:}}
<tr>
{{for field in ['name', 'switch', 'hba']:}}
{{if field == "name":}}
<td>{{=A(port[field], _href=URL(r=request, f="port?id=%s" %
port.id))}}</td>
{{elif field != subset:}}
<td>{{=port[field]}}</td>
{{pass}}
{{pass}}
</tr>
{{pass}}
</table><br><br>
{{=A("Add a new port", _href=URL(r=request, f="new_port"))}}
This query works OK: http://127.0.0.1:8000/env_layout/default/ports
But this one generates a error:
http://127.0.0.1:8000/env_layout/default/ports?subset=switch&subset_id=1
Traceback (most recent call last):
File "gluon/restricted.py", line 107, in restricted
File "C:\Program Files\web2py\applications\env_layout/views/default/
ports.html", line 40, in <module>
File "gluon/sql.py", line 2363, in __iter__
File "gluon/sql.py", line 2271, in __getitem__
File "gluon/sql.py", line 1192, in __getitem__
KeyError: 'switch=1'
response.write('</div>\r\n \r\n<h1>Select a port...</h1>\r
\n<table>\r\n<tr>\r\n',escape=False)
for field in ['name', 'hba', 'switch']:
response.write('\r\n',escape=False)
if field != subset:
response.write('\r\n<th>',escape=False)
response.write(field)
response.write('</th>\r\n',escape=False)
pass
response.write('\r\n',escape=False)
pass
response.write('\r\n</tr>\r\n',escape=False)
for port in records: ### this is line 40 ###
response.write('\r\n<tr>\r\n',escape=False)
for field in ['name', 'hba', 'switch']:
response.write('\r\n',escape=False)
if field == "name":
response.write('\r\n<td>',escape=False)
response.write(A(port[field], _href=URL(r=request, f="port?
id=%s" % port.id)))
response.write('</td>\r\n',escape=False)
elif field != subset:
response.write('\r\n<td>',escape=False)
response.write(port[field])
response.write('</td>\r\n',escape=False)
pass
response.write('\r\n',escape=False)
pass
response.write('\r\n</tr>\r\n',escape=False)
pass
response.write('\r\n</table><br><br>\r\n',escape=False)
Any idea what's going on? Or am I doing this all wrong and should be
taking a different approach?
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