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| author | Pratik Naik <pratiknaik@gmail.com> | 2008-03-26 12:27:52 +0000 |
|---|---|---|
| committer | Pratik Naik <pratiknaik@gmail.com> | 2008-03-26 12:27:52 +0000 |
| commit | ca9413674ea70dc67ab517734af2e40dac21beef (patch) | |
| tree | 86cbf305a2b1b4688a5b6f7cfbce8a9aa505c5f7 /activesupport/lib/active_support/whiny_nil.rb | |
| parent | 5c47ceb30b940a8cd8eb681a898895bce46f79dd (diff) | |
| download | rails-ca9413674ea70dc67ab517734af2e40dac21beef.tar.gz rails-ca9413674ea70dc67ab517734af2e40dac21beef.tar.bz2 rails-ca9413674ea70dc67ab517734af2e40dac21beef.zip | |
Improve documentation.
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9093 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'activesupport/lib/active_support/whiny_nil.rb')
| -rw-r--r-- | activesupport/lib/active_support/whiny_nil.rb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/whiny_nil.rb b/activesupport/lib/active_support/whiny_nil.rb index f614b41fc7..983a14fd42 100644 --- a/activesupport/lib/active_support/whiny_nil.rb +++ b/activesupport/lib/active_support/whiny_nil.rb @@ -18,6 +18,7 @@ class NilClass methods.each { |method| @@method_class_map[method.to_sym] = class_name } end + # Raises a RuntimeError when you attempt to call id on nil or a nil object. def id raise RuntimeError, "Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id", caller end @@ -27,6 +28,7 @@ class NilClass raise_nil_warning_for @@method_class_map[method], method, caller end + # Raises a NoMethodError when you attempt to call a method on nil, or a nil object. def raise_nil_warning_for(class_name = nil, selector = nil, with_caller = nil) message = "You have a nil object when you didn't expect it!" message << "\nYou might have expected an instance of #{class_name}." if class_name |