Module: Sinatra::API::ErrorHandler

Defined in:
lib/sinatra/api/error_handler.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/sinatra/api/error_handler.rb', line 44

def self.included(base)
  base.error 400 do
    handle_api_error if api_call?
  end

  base.error 404 do
    handle_api_error if api_call?
  end
end

Instance Method Details

#format_api_error(message) ⇒ Object 



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# File 'lib/sinatra/api/error_handler.rb', line 3

def format_api_error(message)
  field_errors = {}

  message = case
  when message.is_a?(String)
    [ message ]
  when message.is_a?(Array)
    message
  when message.is_a?(Hash)
    field_errors = message
    message.collect { |k,v| v }
  when message.is_a?(DataMapper::Validations::ValidationErrors)
    field_errors = message.to_hash
    message.to_hash.collect { |k,v| v }.flatten
  else
    [ "unexpected response: #{message.class} -> #{message}" ]
  end

  [ field_errors, message ]
end

#handle_api_error(message = response.body) ⇒ Object 



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# File 'lib/sinatra/api/error_handler.rb', line 24

def handle_api_error(message = response.body)
  # Support for CORS pre-flight requests
  if request.request_method == 'OPTIONS'
    content_type :text
    halt response.status
  end

  status response.status
  content_type :json

  field_errors, message = *format_api_error(message)

  {
    code: response.status,
    status: 'error',
    messages: message,
    field_errors: field_errors
  }.to_json
end