On 5/8/07, Adam <[EMAIL PROTECTED]> wrote:
> keeping logic out of templates. I'm fine with that, so my next
> thought was to build a dictionary of every attribute of a product and
> reference that, but {{ object.attributes["brightness"] }} gets me a
> "Could not parse the remainder" error.
Remember that templates do not use Python code -- dictionary or list
access with [] and method calls with () do not work (and produce the
"I can't parse what you just gave me" error you're seeing). Instead,
the template system uses the dot separator to access everything. It
will try several different techniques to resolve, including dictionary
lookup and method call, and will return the first one that worked.
So:
{{ object.attributes["brightness"] }} does not work.
{{ object.attributes.brightness }} does work -- when the template
system tries dictionary lookup it will find the key "brightness" and
return the correct value.
Quick summary for reference, though this is covered in the template
documentation:
When trying to resolve {{ foo.bar }}, the template system goes through
the following steps in order to figure out what to do with the "bar"
part::
1. Try to treat it as a dictionary and do foo["bar"].
2. If that doesn't work, try to access it as a normal Python attribute.
3. If that doesn't work, try to call it: foo.bar().
4. If that doesn't work, cast to integer and try it as a list index:
foo[int(bar)].
5. If all else fails, return the value of settings.TEMPLATE_STRING_IF_INVALID.
(though note that in step 3, it can short-circuit -- if "bar" does
resolve to a method, but the method requires arguments to call, the
template system will bail out and return TEMPLATE_STRING_IF_INVALID)
--
"Bureaucrat Conrad, you are technically correct -- the best kind of correct."
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