HTML Helpers - Position Dependency Gotcha
I'm posting this as it might help others and it took me a while to figure
out the cause of some syntax errors I was getting with the HTML helpers.
(In my case the problem surfaced in a much more complex statement so the
underlying problem was somewhat hidden).
I'm not sure if the docs point this out anywhere, but I ran into the
following problem:
(You can easily test this in a Web2py shell - just do 'python web2py.py - S
appname -M' from a console)
This does not work - gets python syntax error
str = DIV( _class='cls', LI('aaa'))
str.xml()
This works as expected:
str = DIV (LI('aaa'), _class='cls')
str.xml()
It appears that the arguments in for HTML helpers are position dependent
and attributes need to be placed at the end. This caught be by surprise as
the with normal html the parameter position does not matter.
I'm not sure if Web2py has any 'troubleshooting' type documentation - but
this type of example could be a useful addition to the manual/docs/other.
Hope this helps someone.
BrendanC
