How to extract meaningfull data from an error message when creating an event

[GigaTools]

Hey.
I've got a form that posts Facebook Events on a user's behalf. The
form is working fine but i'm trying to improve it and extract some
meaning full data from the response rather than the generic 'Fail'
error im showing now..

I'm using code like this (trimmed for clarity):


begin
@success = @fb.post(@fb.me.id, :type => :events, :params =>
{ etc })
rescue
StandardError
flash[:notice] = 'Facebook rejected your event, please try again.'
redirect_to whatever
end

flash[:notice] = 'Success.'
redirect_to whatever

if @success is successfull, i can extract the URL of the Facebook
event out of that..
If its not, i cant seem to get my hands on anything usefull to display
to the user..

IF i enable
MiniFB.enable_logging

The MiniFB Log gives me a good meaningfull error. but icant seem to
access it.. anyone have any ideas?

EG:
400
ex.http_body={"error":{"type":"OAuthException","message":"(#100) Param
event_info-city must be a valid city"}}

thnks!

[Travis Reeder]

Is that bottom json what Facebook returns?  Maybe they changed that at some point, we currently raise a MiniFB::FaceBookError which includes "error_code" and "error_msg". 

[GigaTools]

So i should try and grab:

MiniFB::FaceBookError.error_msg

?

thanks

[Travis Reeder]

Did you try ex.message like a normal exception?  

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[GigaTools]

No I'm new to Error catching in Rails.
Do you think you could show me how to access the error or this
ex.message in the controller?
that would be awesome if you could.
thanks!

[GigaTools]

Nevermind.. found it

rescue MiniFB::FaceBookError => exc

exc.message

:-)

[Travis Reeder]

You should probably do some reading so you understand what you are doing: http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_exceptions.html

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