Annotate on_delete/on_update foreign key constraints

.rubocop_todo.yml

@@ -105,7 +105,7 @@ Metrics/MethodLength:
 # Offense count: 2
 # Configuration parameters: CountComments.
 Metrics/ModuleLength:
-  Max: 507
+  Max: 513
 
 # Offense count: 7
 Metrics/PerceivedComplexity:

lib/annotate/annotate_models.rb

@@ -330,10 +330,14 @@ def get_foreign_key_info(klass, options={})
       max_size = foreign_keys.collect{|fk| fk.name.size}.max + 1
       foreign_keys.sort_by(&:name).each do |fk|
         ref_info = "#{fk.column} => #{fk.to_table}.#{fk.primary_key}"
+        constraints_info = ''
+        constraints_info += "ON DELETE => #{fk.on_delete} " if fk.on_delete
+        constraints_info += "ON UPDATE => #{fk.on_update} " if fk.on_update
+        constraints_info.strip!
         if options[:format_markdown]
-          fk_info << sprintf("# * `%s`:\n#     * **`%s`**\n", fk.name, ref_info)
+          fk_info << sprintf("# * `%s`%s:\n#     * **`%s`**\n", fk.name, constraints_info.blank? ? '' : " (_#{constraints_info}_)", ref_info)
         else
-          fk_info << sprintf("#  %-#{max_size}.#{max_size}s %s", fk.name, "(#{ref_info})").rstrip + "\n"
+          fk_info << sprintf("#  %-#{max_size}.#{max_size}s %s %s", fk.name, "(#{ref_info})", constraints_info).rstrip + "\n"
         end
       end
 

spec/annotate/annotate_models_spec.rb

@@ -5,12 +5,14 @@
 require 'active_support/core_ext/string'
 
 describe AnnotateModels do
-  def mock_foreign_key(name, from_column, to_table, to_column = 'id')
+  def mock_foreign_key(name, from_column, to_table, to_column = 'id', constraints = {})
     double("ForeignKeyDefinition",
            :name         => name,
            :column       => from_column,
            :to_table     => to_table,
            :primary_key  => to_column,
+           :on_delete    => constraints[:on_delete],
+           :on_update    => constraints[:on_update]
     )
   end
 
@@ -197,6 +199,36 @@ def mock_column(name, type, options={})
 EOS
   end
 
+  it "should get foreign key info if on_delete/on_update options present" do
+    klass = mock_class(:users, :id, [
+       mock_column(:id, :integer),
+       mock_column(:foreign_thing_id, :integer),
+     ],
+                       [
+                         mock_foreign_key(
+                           'fk_rails_02e851e3b7',
+                           'foreign_thing_id',
+                           'foreign_things',
+                           'id',
+                           on_delete: 'on_delete_value',
+                           on_update: 'on_update_value'
+                         )
+                       ])
+    expect(AnnotateModels.get_schema_info(klass, "Schema Info", :show_foreign_keys => true)).to eql(<<-EOS)
+# Schema Info
+#
+# Table name: users
+#
+#  id               :integer          not null, primary key
+#  foreign_thing_id :integer          not null
+#
+# Foreign Keys
+#
+#  fk_rails_02e851e3b7  (foreign_thing_id => foreign_things.id) ON DELETE => on_delete_value ON UPDATE => on_update_value
+#
+EOS
+  end
+
   it "should get schema info as RDoc" do
     klass = mock_class(:users, :id, [
                                      mock_column(:id, :integer),
@@ -261,7 +293,7 @@ def self.when_called_with(options = {})
       #  notes  :text(55)         not null
       #
     EOS
-    
+
     when_called_with hide_limit_column_types: 'integer,boolean,string,text', returns:
       <<-EOS.strip_heredoc
       # Schema Info