Thanks for the quick reply Michael. I would love to hear what you can find
out about it.
I have what I think is a pretty horrible and dirty “solution”. But it
*seems* to work. What I’ve done is to assign the key attribute of columns
like this:
from collections import namedtuple
MyBundleAttr = namedtuple('MyBundleAttr', ['attr', 'key'])
class MyBundle(Bundle):
def __init__(self, name, *exprs, **kw):
new_exprs = []
for expr in exprs:
# Support custom Bundle attr keys. I don't know the side-effects...
if isinstance(expr, MyBundleAttr):
new_expr = expr.attr
new_expr.key = expr.key
else:
new_expr = expr
new_exprs.append(new_expr)
super().__init__(name, *new_exprs, **kw)
And then I use the newly created MyBundleAttr like this:
primate_bundle = MyBundle(
'primate',
Primate.name,
MyBundle('wooden_tool', *[
WoodenTool.id,
WoodenTool.name,
MyBundleAttr(WoodenToolCategory.name, 'category'),
]),
MyBundle('solid_tool', *[
SolidTool.id,
SolidTool.name,
MyBundleAttr(SolidToolCategory.name, 'category'),
]),
single_entity=True,
)
I’m guessing this could cause all kinds of side-effects… Right?
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