similar to: handling specific database exceptions

Is there an agreed upon method for handling exceptions thrown by something outside of Merb? For example, DataMapper now throws a DataMapper::ObjectNotFoundError when a record isn''t found in the db. I''d like to catch these exceptions and raise a C:E:NotFound exception instead, but without having to wrap a lot of code in begin/rescue/end blocks. Thanks, Mike Irwin

Is there any general way, other than putting in "rescue" catch sections, to capture exceptions thrown when an unexpected exception is thrown? Thanks in advance, James -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060116/6c2f4bb9/attachment.html

I''ve been playing around with the idea of using the database for model validation where possible (instead of duplicating that validation in rails). My first approach to this was to catch exceptions from save/ create and parse the errors, in my case from postgres, to turn them into something friendlier. Something like: def update create end def create begin super

Hi, I''m writing some scripts on the command line using ActiveRecord, and some interesting (read: confusing) things are happening with the way exceptions are caught and re-raised. In AbstractAdapter.log (connection_adapters/abstract_adapter.rb:144), Exception is rescued and reraised as an ActiveRecord::StatementInvalid exception. While in most cases I''m sure this is fine,

[Rails] Validation problems: ActiveRecord::AssociationTypeMismatch Hi everyone, I''m starting on my first rails project and I have a problem that I''m sure has a simple solution. I have two models, an address model and a state model. The address belongs_to :state, foreign_key=>"state" and validate_associated :state I have new & edit controllers for address

Hi, I''m currently putting together a program that allows a user to cancel a current file upload while it''s happening. When I cancel the upload in the browser, I get a " Error reading HTTP body: #<RuntimeError: Socket read returned insufficient data: 4139>" exception. That''s all fine, and understandable, given the browser just closes the connection

Hello! I was wondering, sometimes I raise an exception in my Rails apps, e.g.: raise SecurityError unless @post.user == logged_in_user Now: is there any way to catch that SecurityError exception somewhere and render a custom template? E.g., I want to render ''app/views/content/security_error.rhtml'' Does anyone know how to do this? Thanks a bunch, Rob

Is there a convention for handling exceptions within BackgrounDRb workers? For example, I have a worker which does some asynchronous data processing (*not* a scheduled worker) based on some things in the database. However, if an exception is raised within that worker, then the process for that worker is killed off. Ideally I would want that worker to just silently fail and be optimistic that it

I''ve got a block of code that''s turning out.. well - just plain ugly. So i know I must not be doing it the Ruby way. The main problem I''m having is in dealing with handling errors - and just not finding much Rails documentation that gives a deeper understanding of how to handle errors in Rails (outside of several docs on the catch-all''s) the main method

On Nov 28, 2010, at 9:50 AM, Duncan Sands wrote: >>> In Ada you can throw and exception inside a destructor and it does not lead >>> to program termination. >> >> Interesting. I assume that the personality still sees these as just cleanups, >> so this must be implemented by running the destructor in a handler which >> aborts both unwinds and throws the

Hi John, >> I'm pointing out that if the invoke instruction >> is removed and catch information is attached to entire basic blocks, then if no >> care is taken then it is perfectly possible to use %x before it is defined as >> explained in my previous email, blowing up the entire LLVM system. Clearly the >> solution is to not allow this by not allowing values

On 26 September 2010 13:08, Eugene Toder <eltoder at gmail.com> wrote: >  %s = invoke i32 @v(i32 %o) to label %ok >                   unwind %x to label %catch > ok: >  ret i32 %s > > catch: >  %type = call i32 @exception_type(i8* %x) >  %r = icmp eq i32 %type, 255 ; 255 is DivisionByZeroException type >  br i1 %r, label %bad, label %worse > > bad: >  ret

Hi, I am wondering if there is a way of catching exceptions that are thrown within rubyzip.rb. For example: in rubyzip line 583, private def set_time(binaryDosDate, binaryDosTime) @time = Time.parse_binary_dos_format(binaryDosDate, binaryDosTime) rescue ArgumentError puts "Invalid date/time in zip entry" end I need to be able to ''catch'' the

Hi everyone, I''m starting on my first rails project and I have a problem that I''m sure has a simple solution. I have two models, an address model and a state model. The address belongs_to :state, foreign_key=>"state" and validate_associated :state I have new & edit controllers for address which contain a drop down list for the state choice. My list was

Hi all I tried and tried and tried, but I still fail in creating a form with proper validation and stuff for foreign keys... So I''d really like to get some help here. I''m creating a booking site for DJ''s, and for every booking one can choose one of different countries: class Booking < ActiveRecord::Base validates_presence_of :country_id

Hi begin ActiveRecord::Base.transaction do pb_status_history = ProblemStatusHistory.new pb_status_history.problem_id = @problem.id pb_status_history.problem_status_id = @problem.problem_status_id pb_status_history.save! ret_val=@problem.update_attribute("problem_status_id",''ab'') if ret_val==false

Hi Renato, > On 25 November 2010 13:31, Duncan Sands<baldrick at free.fr> wrote: >> In short, all destructors are run, and if any >> throw >> exceptions then that fact is noted somewhere (and the exception is not >> allowed >> to propagate) and once all destructors have had a chance to run then one >> instance of Program_Error is thrown at the point

Hi all, I have the following code: [use llvm to generate ir_func() ] in side the ir_func() there's a call to a native cpp function that throws an exception. (Just imagine changing the fibonacci example and calling a native c++ func that throws inside the fibonacci body) I can't seem to catch "foreign" exception or any exception using the following pseudo code: try { // cast

I''ve got a really strange problem using belongs_to. I apologize in advance for the length... this is going to take a while to explain. Basic idea: Creating a User requires that the user enter an email address and activation key that matches an existing PendingUser. After creating the user successfully, that pending user should be marked as "used". The problem: When I

On Nov 24, 2010, at 2:59 AM, Renato Golin wrote: > Hi Bill, > > First, I like the idea of being more expressive in IR, since the old > exception handling style didn't quite express exception handling, but > alternate paths (resume/unwind). That made DwarfException.cpp a big > hack. ;) > > It also makes the front-end engineer's life a lot easier, since there >