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Adding polymorphic emoji reactions to any model in Ruby on Rails

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                  class Reaction < ApplicationRecord
  belongs_to :reactable, polymorphic: true
  validates :emoji, presence: true, format: { with: /\p{Emoji}/, message: "must be a valid emoji" }
end

                  class Post < ApplicationRecord
  has_many :reactions, as: :reactable, dependent: :destroy
end

                  class CreateReactions < ActiveRecord::Migration[7.0]
  def change
    create_table :reactions do |t|
      t.references :reactable, polymorphic: true, null: false
      t.string :emoji, null: false
      t.timestamps
    end
  end
end

This snippet introduces a polymorphic emoji reaction system in Rails, allowing models like Post (or any other) to receive emoji reactions. The Reaction model supports different reactable types via polymorphic: true. A simple emoji regex ensures valid reactions. This setup makes it easy to add likes, claps, fire emojis, or even 🦄 reactions to any model in your app!

Martin Sojka

More from Martin Sojka

Adding polymorphic emoji reactions to any model in Ruby on Rails

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More from Martin Sojka