Craig Russell wrote on 1/25/18 8:48 PM:
>
>> On Jan 25, 2018, at 8:44 AM, Sam Ruby <[email protected]> wrote:
...snip...
>> Looks to me like the redirect worked, but the if check did not do what
>> you expected. @phase is neither 'discuss' nor 'vote'. Just a guess,
>> but perhaps what you want is @progress['phase'] as this data was read
>> from JSON so the hash indexes are likely to be strings.
>
> This was totally unexpected. I thought Ruby was supposed to be user friendly.
> :)
Debug printouts and stackoverflow are your friend - even when you've
been writing code for a while. 8-)
> @progress['phase'] is different from @progress[:phase]
Yes, also depending on *where* @progress[] came from - i.e. is it a hash
you built in memory, or a hash you read from some JSON/YAML file? I
just got bit by this one too recently.
Symbols (a name with a colon in :front or sometimes after:) are not
Strings, as much as they sometimes look like them.
- Hashes created in memory (or passed around a program) using :symbols
will work great (and are fast).
- Hashes with symbols for keys written out to disk are converted into
strings. When you read the Hash back from disk, it's now *string* keys.
- Symbols also have a different way to write: when defining a {} value:
ShaneMac:wdev curcuru$ irb
irb(main):001:0> h = {'string_key' => 'value', :symbol_key => 'other
value', symbol_special: 'short form' }
=> {"string_key"=>"value", :symbol_key=>"other value",
:symbol_special=>"short form"}
irb(main):002:0> h[:symbol_special]
=> "short form"
irb(main):003:0> h[:new_symbol] = 'extra value'
=> "extra value"
irb(main):004:0> h
=> {"string_key"=>"value", :symbol_key=>"other value",
:symbol_special=>"short form", :new_symbol=>"extra value"}
But - if you read the hash in from disk, all the keys will be strings.
Make more sense now?
>
> I just learnt about :phase the symbol recently, and now I have to learn more?
> :(
>
> Anyway, prob solved.
>
> THANKS!
>
> Craig
>
> P.S. Who knew this was so complicated? ;-)
--
- Shane
https://www.apache.org/foundation/marks/resources
