1 files changed, 5 insertions, 4 deletions
diff --git a/activesupport/lib/active_support/core_ext/string/inflections.rb b/activesupport/lib/active_support/core_ext/string/inflections.rb
index a943752f17..b2e713077c 100644
--- a/activesupport/lib/active_support/core_ext/string/inflections.rb
+++ b/activesupport/lib/active_support/core_ext/string/inflections.rb
@@ -164,7 +164,7 @@ class String
   #
   #   <%= link_to(@person.name, person_path) %>
   #   # => <a href="/person/1-donald-e-knuth">Donald E. Knuth</a>
-  def parameterize(sep = '-')
+  def parameterize(sep = '-'.freeze)
     ActiveSupport::Inflector.parameterize(self, sep)
   end
 
@@ -172,17 +172,17 @@ class String
   # uses the +pluralize+ method on the last word in the string.
   #
   #   'RawScaledScorer'.tableize # => "raw_scaled_scorers"
-  #   'egg_and_ham'.tableize     # => "egg_and_hams"
+  #   'ham_and_egg'.tableize     # => "ham_and_eggs"
   #   'fancyCategory'.tableize   # => "fancy_categories"
   def tableize
     ActiveSupport::Inflector.tableize(self)
   end
 
-  # Create a class name from a plural table name like Rails does for table names to models.
+  # Creates a class name from a plural table name like Rails does for table names to models.
   # Note that this returns a string and not a class. (To convert to an actual class
   # follow +classify+ with +constantize+.)
   #
-  #   'egg_and_hams'.classify # => "EggAndHam"
+  #   'ham_and_eggs'.classify # => "HamAndEgg"
   #   'posts'.classify        # => "Post"
   def classify
     ActiveSupport::Inflector.classify(self)
@@ -199,6 +199,7 @@ class String
   #   'employee_salary'.humanize              # => "Employee salary"
   #   'author_id'.humanize                    # => "Author"
   #   'author_id'.humanize(capitalize: false) # => "author"
+  #   '_id'.humanize                          # => "Id"
   def humanize(options = {})
     ActiveSupport::Inflector.humanize(self, options)
   end