added indexes

app/models/assignment.rb

@@ -17,12 +17,6 @@ class Assignment < ActiveRecord::Base
   scope :by_current, where('due_date >= ?', Date.today)
   scope :by_grade, lambda { |grade_level_id| where('grade_level_id = ?', grade_level_id) }
   scope :by_subject, lambda { |subject| joins(:subject).where('name = ?', subject) }
-
-  # scope :math, joins(:subject).where("name = ?", 'Math')
-  # scope :ela, joins(:subject).where("name = ?", 'English Language Arts (ELA)')
-  # scope :social_studies, joins(:subject).where("name = ?", 'Social Studies')
-  # scope :science, joins(:subject).where("name = ?", 'Science')
-  # scope :extra_credit, joins(:subject).where("name = ?", 'Extra Credit')
   scope :for_students, joins(:student_assignments)
   scope :completed, for_students.where("student_assignments.completion_time IS NOT NULL")
 

db/migrate/20120817000554_add_indexes_to_student.rb

@@ -0,0 +1,5 @@
+class AddIndexesToStudent < ActiveRecord::Migration
+  def change
+    add_index :students, :afterschool_class_id
+  end
+end

db/migrate/20120817001858_add_index_to_attendance.rb

@@ -0,0 +1,6 @@
+class AddIndexToAttendance < ActiveRecord::Migration
+  def change
+        add_index :attendances, :session_id
+        add_index :attendances, :student_id
+  end
+end

db/migrate/20120817002648_add_index_to_afterschool_class.rb

@@ -0,0 +1,5 @@
+class AddIndexToAfterschoolClass < ActiveRecord::Migration
+  def change
+    add_index :afterschool_classes, :grade_level_id
+  end
+end

db/migrate/20120817002932_add_index_to_assignment.rb

@@ -0,0 +1,6 @@
+class AddIndexToAssignment < ActiveRecord::Migration
+  def change
+    add_index :assignments, :subject_id
+    add_index :assignments, :grade_level_id
+  end
+end

db/migrate/20120817003236_add_index_to_session.rb

@@ -0,0 +1,5 @@
+class AddIndexToSession < ActiveRecord::Migration
+  def change
+    add_index :sessions, :afterschool_class_id
+  end
+end

db/migrate/20120817003613_add_index_to_student_assignment.rb

@@ -0,0 +1,6 @@
+class AddIndexToStudentAssignment < ActiveRecord::Migration
+  def change
+    add_index :student_assignments, :student_id
+    add_index :student_assignments, :assignment_id
+  end
+end

db/migrate/20120817003836_add_index_to_teacher.rb

@@ -0,0 +1,5 @@
+class AddIndexToTeacher < ActiveRecord::Migration
+  def change
+    add_index :teachers, :afterschool_class_id
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20120813173500) do
+ActiveRecord::Schema.define(:version => 20120817003836) do
 
   create_table "admins", :force => true do |t|
     t.string   "email",                  :default => "", :null => false
@@ -37,6 +37,8 @@
     t.datetime "updated_at",     :null => false
   end
 
+  add_index "afterschool_classes", ["grade_level_id"], :name => "index_afterschool_classes_on_grade_level_id"
+
   create_table "assignments", :force => true do |t|
     t.string   "description"
     t.date     "due_date"
@@ -47,6 +49,9 @@
     t.integer  "grade_level_id"
   end
 
+  add_index "assignments", ["grade_level_id"], :name => "index_assignments_on_grade_level_id"
+  add_index "assignments", ["subject_id"], :name => "index_assignments_on_subject_id"
+
   create_table "attendances", :force => true do |t|
     t.integer  "session_id"
     t.integer  "student_id"
@@ -55,6 +60,9 @@
     t.datetime "updated_at", :null => false
   end
 
+  add_index "attendances", ["session_id"], :name => "index_attendances_on_session_id"
+  add_index "attendances", ["student_id"], :name => "index_attendances_on_student_id"
+
   create_table "grade_levels", :force => true do |t|
     t.string   "year"
     t.datetime "created_at", :null => false
@@ -69,6 +77,8 @@
     t.datetime "updated_at",           :null => false
   end
 
+  add_index "sessions", ["afterschool_class_id"], :name => "index_sessions_on_afterschool_class_id"
+
   create_table "student_assignments", :force => true do |t|
     t.datetime "completion_time"
     t.integer  "student_id"
@@ -77,6 +87,9 @@
     t.datetime "updated_at",      :null => false
   end
 
+  add_index "student_assignments", ["assignment_id"], :name => "index_student_assignments_on_assignment_id"
+  add_index "student_assignments", ["student_id"], :name => "index_student_assignments_on_student_id"
+
   create_table "students", :force => true do |t|
     t.string   "first_name"
     t.string   "last_name"
@@ -85,6 +98,8 @@
     t.datetime "updated_at",           :null => false
   end
 
+  add_index "students", ["afterschool_class_id"], :name => "index_students_on_afterschool_class_id"
+
   create_table "subjects", :force => true do |t|
     t.string   "name"
     t.datetime "created_at", :null => false
@@ -100,4 +115,6 @@
     t.string   "salutation"
   end
 
+  add_index "teachers", ["afterschool_class_id"], :name => "index_teachers_on_afterschool_class_id"
+
 end