added subject migration

db/migrate/20250116145738_change_title_to_text_in_subjects.rb

@@ -0,0 +1,6 @@
+class ChangeTitleToTextInSubjects < ActiveRecord::Migration[7.2]
+  def change
+    # Change the column from string to text
+    change_column :subjects, :title, :text
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2024_11_03_215851) do
+ActiveRecord::Schema[7.2].define(version: 2025_01_16_145738) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -173,7 +173,7 @@
   end
 
   create_table "subjects", id: :serial, force: :cascade do |t|
-    t.string "title", limit: 30
+    t.text "title"
     t.datetime "created_at", precision: nil
     t.datetime "updated_at", precision: nil
     t.index ["title"], name: "index_subjects_title", unique: true