Gab Social. All are welcome.

app/models/list_account.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+# == Schema Information
+#
+# Table name: list_accounts
+#
+#  id         :bigint(8)        not null, primary key
+#  list_id    :bigint(8)        not null
+#  account_id :bigint(8)        not null
+#  follow_id  :bigint(8)        not null
+#
+
+class ListAccount < ApplicationRecord
+  belongs_to :list
+  belongs_to :account
+  belongs_to :follow
+
+  validates :account_id, uniqueness: { scope: :list_id }
+
+  before_validation :set_follow
+
+  private
+
+  def set_follow
+    self.follow = Follow.find_by(account_id: list.account_id, target_account_id: account.id)
+  end
+end