data modeling

Author: jaspermayone

app/models/academic_class.rb

@@ -0,0 +1,13 @@
+class AcademicClass < ApplicationRecord
+  belongs_to :term
+
+  has_and_belongs_to_many :faculties
+  has_many :meeting_times, dependent: :destroy
+  has_many :rooms, through: :meeting_times
+
+  enum :schedule_type, {
+    lecture: 1, # LEC
+    laboratory: 2 # LAB
+  }
+
+end

app/models/application_record.rb

@@ -1,3 +1,4 @@
 class ApplicationRecord < ActiveRecord::Base
   primary_abstract_class
+  has_paper_trail
 end

app/models/building.rb

@@ -0,0 +1,3 @@
+class Building < ApplicationRecord
+  has_many :rooms
+end

app/models/faculty.rb

@@ -0,0 +1,24 @@
+class Faculty < ApplicationRecord
+  has_and_belongs_to_many :academic_classes
+
+  def full_name
+    "#{first_name} #{last_name}"
+  end
+
+  def initials
+    "#{first_name[0]}#{last_name[0]}"
+  end
+
+  def u_name
+    def fwd
+      "#{first_name[0]}. #{last_name}"
+    end
+
+    def rev
+      "#{last_name}, #{first_name[0]}."
+    end
+  end
+
+
+
+end

app/models/meeting_time.rb

@@ -0,0 +1,15 @@
+class MeetingTime < ApplicationRecord
+  belongs_to :academic_class
+  belongs_to :room
+  has_one :building, through: :room
+
+  enum :meeting_schedule_type, {
+    lecture: 1, # LEC
+    laboratory: 2 # LAB
+  }
+
+  enum :meeting_type, {
+    class_meeting: 1 # CLAS
+  }
+
+end

app/models/room.rb

@@ -0,0 +1,9 @@
+class Room < ApplicationRecord
+  belongs_to :building
+
+  def floor
+    # get first digit of room number
+    number.to_s[0].to_i
+  end
+
+end

app/models/term.rb

@@ -0,0 +1,23 @@
+class Term < ApplicationRecord
+  before_create :check_term_validity
+  has_many :academic_classes, dependent: :destroy
+
+  enum :semester, {
+    spring: 1,
+    fall: 2,
+    summer: 3
+  }
+
+  def name
+    "#{semester.to_s.capitalize} #{year}"
+  end
+
+  private
+
+  def check_term_validity
+    unless [ 1, 2, 3 ].include?(semester)
+      errors.add(:semester, "must be 1 (Spring), 2 (Fall), or 3 (Summer)")
+    end
+  end
+
+end

app/models/user.rb

@@ -3,4 +3,19 @@ class User < ApplicationRecord
   # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
   devise :database_authenticatable, :registerable,
          :recoverable, :rememberable, :validatable
+
+  before_create :check_access_level
+
+  private
+
+  def full_name
+    "#{first_name} #{last_name}"
+  end
+
+  def check_access_level
+    unless [0, 1, 2].include?(access_level)
+      errors.add(:access_level, "must be 0 (Student), 1 (Admin), or 2 (Owner)")
+    end
+  end
+
 end

db/migrate/20251024221509_add_fields_to_users.rb

@@ -1,7 +1,5 @@
 class AddFieldsToUsers < ActiveRecord::Migration[8.0]
   def change
-    add_column :users, :first_name, :string
-    add_column :users, :last_name, :string
     add_column :users, :access_level, :integer, default: 0, null: false
   end
 end

db/migrate/20251026190940_create_terms.rb

@@ -0,0 +1,15 @@
+class CreateTerms < ActiveRecord::Migration[8.0]
+  def change
+    create_table :terms do |t|
+
+      t.string :uid, null: false # e.g., "202610 (Fall 2025) or 202620 (202620)"
+      t.integer :year, null: false # e.g., 2024
+      t.integer :semester, null: false # e.g., 1 for Spring, 2 for Fall, 3 for Summer
+
+      t.timestamps
+    end
+
+    add_index :terms, [:year, :semester], unique: true
+
+  end
+end