My aim is to build a TG1.0.4.4 application which can be extended by
independently developed small TG applications.
For that, i have to split my controllers,models,templates,static
files
etc into multiple directories.
Everything works fine except the model part.
I have done it as described below
*)Created a 'models' directory
*)Within that created two model files eg: a.py and b.py
*)Created an __init__.py file within the models directory with
contents
from turbogears.database import PackageHub
__connection__ = hub = PackageHub('projectname')
from projectname.models.a import *
from projectname.models.b import *
I could run the application without any problems.
But, when I added values into a SingleSelectField widget, the
problems
began to arise
*)I created a form widget with a SingleSelectField as shown below:
class FormFields(widgets.WidgetsList):
txnType=categories =
widgets.SingleSelectField(options=getValuesFromA())
Here getValuesFromA() is a callable which returns a list of tuples
required for the SingleSelectField as shown below:
def getValuesFromA():
vals = [(A.field1, A.field2)
for item in A.select()]
return vals
Here 'A' is a model class in a.py
When trying to run the application, the following error occurs.
KeyError: 'No database configuration found!'
After this i changed something to get it work.
*)I moved the form widget code to a controller definition (URLrequest
handler) as shown below
class ControllerClass(controllers.Controller)
....
...
@...(...)
def RequestHandlerA(self,*args,**kwargs)
class FormFields(widgets.WidgetsList):
txnType=widgets.SingleSelectField(options=[(entry.field1,entry.field2)
for entry in A.select()])
...rest of code....
Now it worked!!!
That is the 'database configuration' can be 'found' at run time only.
But this is not the actual result for me.
I want to specify the widget form outside my controller functions.
Can anybody help me in this regard.
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