class CreateAnnotations < ActiveRecord::Migration[6.1]
  def change
    create_table :annotations do |t|
      t.references :doctrine, null: false
      t.references :document, null: false, polymorphic: true
      t.references :annomark, null: false
      t.string     :phil_rep, null: false, default: ""
      t.text       :editor_notes, null: false, default: ""
      t.integer    :rank, null: false, default: 1

      t.timestamps
    end

    add_index :annotations, 
              %i[doctrine_id annomark_id document_id document_type phil_rep],
              name: "index_annotation_uniqueness",
              unique: true
  end
end