per line comments display

app/assets/stylesheets/projects.css.scss

@@ -693,3 +693,31 @@ a.project-update.titled {
     top: 0;
   }
 }
+
+tr.line_notes_row { 
+  &:hover { 
+    background:none;
+  }
+  td { 
+    margin:0px;
+    padding:0px;
+    border-bottom:1px solid #DEE2E3;
+    
+
+    ul {
+      display:block;
+      list-style:none;
+      margin:0px;
+      padding:0px;
+
+      li { 
+        border-top:1px solid #DEE2E3;
+        padding:10px;
+
+        .delete-note { 
+          display:none; 
+        }
+      }
+    }
+  }
+}

app/controllers/commits_controller.rb

@@ -27,6 +27,8 @@ class CommitsController < ApplicationController
     @notes = project.commit_notes(@commit).fresh.limit(20)
     @note = @project.build_commit_note(@commit)
 
+    @line_notes = project.commit_line_notes(@commit)
+
     respond_to do |format|
       format.html
       format.js { respond_with_notes }

app/models/note.rb

@@ -53,6 +53,23 @@ class Note < ActiveRecord::Base
       noteable
     end
   end
+
+  def line_file_id
+    @line_file_id ||= line_code.split("_")[1].to_i if line_code
+  end
+
+  def line_type_id
+    @line_type_id ||= line_code.split("_").first if line_code
+  end
+
+  def line_number 
+    @line_number ||= line_code.split("_").last.to_i if line_code
+  end
+
+  def for_line?(file_id, old_line, new_line)
+    line_file_id == file_id && 
+      ((line_type_id == "NEW" && line_number == new_line) || (line_type_id == "OLD" && line_number == old_line ))
+  end
 end
 # == Schema Information
 #

app/models/project.rb

@@ -166,7 +166,11 @@ class Project < ActiveRecord::Base
   end
 
   def commit_notes(commit)
-    notes.where(:noteable_id => commit.id, :noteable_type => "Commit")
+    notes.where(:noteable_id => commit.id, :noteable_type => "Commit", :line_code => nil)
+  end
+
+  def commit_line_notes(commit)
+    notes.where(:noteable_id => commit.id, :noteable_type => "Commit").where("line_code not null")
   end
 
   def has_commits?

app/views/commits/_text_file.html.haml

@@ -19,6 +19,13 @@
       %td.new_line
         = link_to raw(diff_line_class(line) == "old" ? " " : line_new) , "#NEW#{index}-#{line_new}", :id => "NEW#{index}-#{line_new}"
       %td.line_content{:class => diff_line_class(full_line)}= raw "#{full_line}  "
+    - comments = @line_notes.select { |n| n.for_line?(index, line_old, line_new) }.sort_by(&:created_at).reverse
+    - unless comments.empty?
+      %tr.line_notes_row
+        %td{:colspan => 3} 
+          %ul
+            - comments.each do |note|
+              = render :partial => "notes/show", :locals => {:note => note}
     - if line[0] == "+"
       - line_new += 1
     - elsif line[0] == "-"

db/migrate/20120110180749_add_line_number_to_note.rb

+class AddLineNumberToNote < ActiveRecord::Migration
+  def change
+    add_column :notes, :line_code, :string, :null => true
+  end
+end

db/schema.rb

@@ -11,7 +11,19 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20111220190817) do
+ActiveRecord::Schema.define(:version => 20120110180749) do
+
+  create_table "features", :force => true do |t|
+    t.string   "name"
+    t.string   "branch_name"
+    t.integer  "assignee_id"
+    t.integer  "author_id"
+    t.integer  "project_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.string   "version"
+    t.integer  "status",      :default => 0, :null => false
+  end
 
   create_table "issues", :force => true do |t|
     t.string   "title"
@@ -56,6 +68,7 @@ ActiveRecord::Schema.define(:version => 20111220190817) do
     t.datetime "updated_at"
     t.integer  "project_id"
     t.string   "attachment"
+    t.string   "line_code"
   end
 
   create_table "projects", :force => true do |t|