Admin option to add banners and show banners

app/controllers/admin/banners_controller.rb

@@ -0,0 +1,56 @@
+class Admin::BannersController < Admin::BaseController
+
+  has_filters %w{all with_active with_inactive}, only: :index
+
+  before_action :find_banner, only: [:edit, :update, :destroy]
+  before_action :banner_styles, only: [:edit, :new, :create, :update]
+  before_action :banner_imgs, only: [:edit, :new, :create, :update]
+
+  respond_to :html, :js
+
+  load_and_authorize_resource
+
+  def index
+    @banners = Banner.send(@current_filter).page(params[:page])
+  end
+
+  def create
+    @banner = Banner.new(banner_params)
+    if @banner.save
+      redirect_to admin_banners_path
+    else
+      render :new
+    end
+  end
+
+  def update
+    @banner.assign_attributes(banner_params)
+    if @banner.update(banner_params)
+      redirect_to admin_banners_path
+    else
+      render :edit
+    end
+  end
+
+  def destroy
+    @banner.destroy
+    redirect_to admin_banners_path
+  end
+
+  private
+    def banner_params
+      params.require(:banner).permit(:title, :description, :target_url, :style, :image, :post_started_at, :post_ended_at)
+    end
+
+    def find_banner
+      @banner = Banner.find(params[:id])
+    end
+
+    def banner_styles
+      @banner_styles = Setting.all.banner_style.map { |banner_style| [banner_style.value, banner_style.key.split('.')[1]] }
+    end
+
+    def banner_imgs
+      @banner_imgs = Setting.all.banner_img.map { |banner_img| [banner_img.value, banner_img.key.split('.')[1]] }
+    end
+end