if statements with ternary operators

[Brewster]

i have been struggling with using an if statement in my haml markup.

in my layout i have:

-if controller.action_name == 'index'
= controller.action_name.titleize

however, i wanted to implement that inline in my title

%title= controller.action_name == 'index' ?
controller.action_name.titleize

the latter does not work, and i have tried a variety of different
syntaxes, but i am just not having any success. i am releatively new
to ruby, and a noob with haml, so hoepfully there is something obvious
i am overlooking.

thanks!

[Nathan Weizenbaum]

A ternary operator has three components (hence the name): it's of the form "condition ? value1 : value2", where value1 is used if condition is true, and value2 is used otherwise. In your example, you're missing value2.

If you only have one value, you can do this: "%title= value if condition".

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[Brewster]

right, i intended to include the 3rd value but it was a bit of a rush
post.
what would the proper syntax for "condition ? val1 : val2" be in haml?

> > haml+uns...@googlegroups.com <haml%2Bunsu...@googlegroups.com>.

[Chris Eppstein]

%title= condition ? val1 : val2

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[Brewster]

hmm ok. i tried applying that format to append the existing text in
the title, with no success.

%title= 'Site Name :: ' + controller.action_name == 'index' ?
controller.action_name.titleize

> > haml%2Bunsu...@googlegroups.com<haml%252Buns...@googlegroups.com>

[Alex Wallace]

That ternary statement is incorrect formed. You'll also need to add parentheses around the statement; otherwise Haml will start by trying to concatenate true/false onto the title, resulting in a TypeError.

A correct version might be:

%title= 'Site Name :: ' + (action_name == "index" ? "Index" : "") 

The titleized form of "index" will always be "Index", so I'm not sure why that just isn't written explicitly... maybe you just want something like:

%title~ "Site Name :: #{action_name.titleize}"

Either way it doesn't make much sense to me, but you'll need parentheses and the third part of the ternary operator (the "else" clause)

Best,

Alex

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