feat: add timestamp_columns config option

lib/annotate_rb/model_annotator/model_wrapper.rb

@@ -6,6 +6,8 @@ class ModelWrapper
       # Should be the wrapper for an ActiveRecord model that serves as the source of truth of the model
       # of the model that we're annotating
 
+      DEFAULT_TIMESTAMP_COLUMNS = %w[created_at updated_at]
+
       def initialize(klass, options)
         @klass = klass
         @options = options
@@ -143,18 +145,24 @@ def classified_sort(cols)
         associations = []
         id = nil
 
+        # specs don't load defaults, so ensure we have defaults here
+        timestamp_columns = @options[:timestamp_columns] || DEFAULT_TIMESTAMP_COLUMNS
+
         cols.each do |c|
           if c.name.eql?("id")
             id = c
-          elsif c.name.eql?("created_at") || c.name.eql?("updated_at")
+          elsif timestamp_columns.include?(c.name)
             timestamps << c
           elsif c.name[-3, 3].eql?("_id")
             associations << c
           else
             rest_cols << c
           end
         end
-        [rest_cols, timestamps, associations].each { |a| a.sort_by!(&:name) }
+
+        timestamp_order = timestamp_columns.each_with_index.to_h
+        timestamps.sort_by! { |col| timestamp_order[col.name] }
+        [rest_cols, associations].each { |a| a.sort_by!(&:name) }
 
         ([id] << rest_cols << timestamps << associations).flatten.compact
       end

lib/annotate_rb/options.rb

@@ -69,6 +69,9 @@ def from(options = {}, state = {})
       # ModelAnnotator
       hide_limit_column_types: "",
 
+      # ModelAnnotator
+      timestamp_columns: ModelAnnotator::ModelWrapper::DEFAULT_TIMESTAMP_COLUMNS,
+
       ignore_columns: nil, # ModelAnnotator
       ignore_routes: nil, # RouteAnnotator
       ignore_unknown_models: false, # ModelAnnotator
@@ -130,6 +133,7 @@ def from(options = {}, state = {})
       :debug,
       :hide_default_column_types,
       :hide_limit_column_types,
+      :timestamp_columns,
       :ignore_columns,
       :ignore_routes,
       :ignore_unknown_models,

spec/lib/annotate_rb/model_annotator/annotation/annotation_builder_spec.rb

@@ -182,6 +182,60 @@
       it 'works with option "classified_sort"' do
         is_expected.to eq expected_result
       end
+
+      context "when default timestamps are included" do
+        let(:columns) do
+          [
+            mock_column("parent_id", :integer),
+            mock_column("updated_at", :datetime),
+            mock_column("name", :string),
+            mock_column("id", :integer),
+            mock_column("deleted_at", :datetime),
+            mock_column("created_at", :datetime)
+          ]
+        end
+
+        it "sorts default timestamps second last before associations" do
+          is_expected.to eq <<~EOS
+            # == Schema Information
+            #
+            # Table name: users
+            #
+            #  id         :integer          not null, primary key
+            #  deleted_at :datetime         not null
+            #  name       :string           not null
+            #  created_at :datetime         not null
+            #  updated_at :datetime         not null
+            #  parent_id  :integer          not null
+            #
+          EOS
+        end
+
+        context "when timestamps_column option is set" do
+          let(:options) do
+            AnnotateRb::Options.new(
+              classified_sort: true,
+              timestamp_columns: %w[created_at updated_at deleted_at]
+            )
+          end
+
+          it "sorts configured timestamps into config order" do
+            is_expected.to eq <<~EOS
+              # == Schema Information
+              #
+              # Table name: users
+              #
+              #  id         :integer          not null, primary key
+              #  name       :string           not null
+              #  created_at :datetime         not null
+              #  updated_at :datetime         not null
+              #  deleted_at :datetime         not null
+              #  parent_id  :integer          not null
+              #
+            EOS
+          end
+        end
+      end
     end
 
     context "when geometry columns are included" do

spec/lib/annotate_rb/options_spec.rb

@@ -56,11 +56,11 @@
   describe ".load_defaults" do
     subject { described_class.new(options, state).load_defaults }
 
+    let(:options) { {} }
     let(:state) { {} }
 
     context 'when default value of "show_complete_foreign_keys" is not set' do
       let(:key) { :show_complete_foreign_keys }
-      let(:options) { {} }
 
       it "returns false" do
         expect(subject[key]).to eq(false)
@@ -76,10 +76,14 @@
       end
     end
 
+    describe "default timestamp_columns" do
+      it "sets defaults matching Rails' convention" do
+        expect(subject[:timestamp_columns]).to match_array(%w[created_at updated_at])
+      end
+    end
+
     describe "comment options" do
       context "when using defaults" do
-        let(:options) { {} }
-
         it "uses the defaults" do
           expect(subject[:with_comment]).to eq(true)
           expect(subject[:with_column_comments]).to eq(true)