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-rw-r--r--activesupport/CHANGELOG.md16
-rw-r--r--activesupport/lib/active_support/rescuable.rb4
-rw-r--r--activesupport/test/rescuable_test.rb29
3 files changed, 45 insertions, 4 deletions
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index 912b0287af..3f340958ea 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,19 @@
+* Added support for error dispatcher classes in ActiveSupport::Rescuable. Now it acts closer to Ruby's rescue.
+
+ class BaseController < ApplicationController
+ module ErrorDispatcher
+ def self.===(other)
+ Exception === other && other.respond_to?(:status)
+ end
+ end
+
+ rescue_from ErrorDispatcher do |error|
+ render status: error.status, json: { error: error.to_s }
+ end
+ end
+
+ *Genadi Samokovarov*
+
* Added `#verified` and `#valid_message?` methods to `ActiveSupport::MessageVerifier`
Previously, the only way to decode a message with `ActiveSupport::MessageVerifier` was to use `#verify`, which would raise an exception on invalid messages. Now `#verified` can also be used, which returns `nil` on messages that cannot be decoded.
diff --git a/activesupport/lib/active_support/rescuable.rb b/activesupport/lib/active_support/rescuable.rb
index a7eba91ac5..1a02acd5b1 100644
--- a/activesupport/lib/active_support/rescuable.rb
+++ b/activesupport/lib/active_support/rescuable.rb
@@ -60,7 +60,7 @@ module ActiveSupport
end
klasses.each do |klass|
- key = if klass.is_a?(Class) && klass <= Exception
+ key = if klass.is_a?(Module) && klass.respond_to?(:===)
klass.name
elsif klass.is_a?(String)
klass
@@ -101,7 +101,7 @@ module ActiveSupport
# itself when rescue_from CONSTANT is executed.
klass = self.class.const_get(klass_name) rescue nil
klass ||= klass_name.constantize rescue nil
- exception.is_a?(klass) if klass
+ klass === exception if klass
end
case rescuer
diff --git a/activesupport/test/rescuable_test.rb b/activesupport/test/rescuable_test.rb
index b8af888f7c..bd43ad0797 100644
--- a/activesupport/test/rescuable_test.rb
+++ b/activesupport/test/rescuable_test.rb
@@ -12,6 +12,12 @@ end
class CoolError < StandardError
end
+module WeirdError
+ def self.===(other)
+ Exception === other && other.respond_to?(:weird?)
+ end
+end
+
class Stargate
attr_accessor :result
@@ -29,6 +35,10 @@ class Stargate
@result = e.message
end
+ rescue_from WeirdError do
+ @result = 'weird'
+ end
+
def dispatch(method)
send(method)
rescue Exception => e
@@ -47,6 +57,16 @@ class Stargate
raise MadRonon.new("dex")
end
+ def weird
+ StandardError.new.tap do |exc|
+ def exc.weird?
+ true
+ end
+
+ raise exc
+ end
+ end
+
def sos
@result = 'killed'
end
@@ -91,14 +111,19 @@ class RescuableTest < ActiveSupport::TestCase
assert_equal 'dex', @stargate.result
end
+ def test_rescue_from_error_dispatchers_with_case_operator
+ @stargate.dispatch :weird
+ assert_equal 'weird', @stargate.result
+ end
+
def test_rescues_defined_later_are_added_at_end_of_the_rescue_handlers_array
- expected = ["WraithAttack", "WraithAttack", "NuclearExplosion", "MadRonon"]
+ expected = ["WraithAttack", "WraithAttack", "NuclearExplosion", "MadRonon", "WeirdError"]
result = @stargate.send(:rescue_handlers).collect(&:first)
assert_equal expected, result
end
def test_children_should_inherit_rescue_definitions_from_parents_and_child_rescue_should_be_appended
- expected = ["WraithAttack", "WraithAttack", "NuclearExplosion", "MadRonon", "CoolError"]
+ expected = ["WraithAttack", "WraithAttack", "NuclearExplosion", "MadRonon", "WeirdError", "CoolError"]
result = @cool_stargate.send(:rescue_handlers).collect(&:first)
assert_equal expected, result
end