ransack ok

app/controllers/scores_controller.rb

@@ -5,7 +5,7 @@ class ScoresController < ApplicationController
   before_action :set_score, only: %i[show edit update destroy]
 
   def index
-    @q = Score.all.ransack
+    @q = Score.all.ransack(q_params)
     @pagy, @scores = pagy(@q.result)
   end
 
@@ -47,4 +47,5 @@ class ScoresController < ApplicationController
 
   def set_score = @score = Score.find(params[:id])
   def score_params = params.require(:score).permit(:name, :grade)
+  def q_params = params.fetch(:q, {}).permit!
 end

app/models/score.rb

@@ -2,4 +2,6 @@
 class Score < ApplicationRecord
   validates :name, presence: true
   validates :grade, presence: true
+
+  def self.ransackable_attributes(_ = nil) = authorizable_ransackable_attributes
 end