Make search easier to override and adapt to custom use cases

app/controllers/administrate/application_controller.rb

@@ -5,9 +5,7 @@ class ApplicationController < ActionController::Base
     def index
       authorize_resource(resource_class)
       search_term = params[:search].to_s.strip
-      resources = Administrate::Search.new(scoped_resource,
-                                           dashboard,
-                                           search_term).run
+      resources = filter_resources(scoped_resource, search_term: search_term)
       resources = apply_collection_includes(resources)
       resources = order.apply(resources)
       resources = resources.page(params[:_page]).per(records_per_page)
@@ -81,6 +79,14 @@ def destroy
 
     private
 
+    def filter_resources(resources, search_term:)
+      Administrate::Search.new(
+        resources,
+        dashboard,
+        search_term,
+      ).run
+    end
+
     def after_resource_destroyed_path(_requested_resource)
       { action: :index }
     end

spec/example_app/app/controllers/admin/log_entries_controller.rb

@@ -1,4 +1,30 @@
 module Admin
   class LogEntriesController < Admin::ApplicationController
+    def filter_resources(resources, search_term:)
+      return resources if search_term.blank?
+
+      customer_ids = Customer.where(
+        [
+          "name ILIKE ?",
+          "%#{search_term}%",
+        ],
+      ).pluck(:id)
+      order_ids = Order.joins(:customer).where(
+        [
+          "customers.name ILIKE ?",
+          "%#{search_term}%",
+        ],
+      ).pluck(:id)
+
+      customers_filter = resources.where(
+        logeable_type: "Customer",
+        logeable_id: customer_ids,
+      )
+      orders_filter = resources.where(
+        logeable_type: "Order",
+        logeable_id: order_ids,
+      )
+      customers_filter.or(orders_filter)
+    end
   end
 end

spec/example_app/spec/features/log_search_spec.rb

@@ -0,0 +1,32 @@
+require "rails_helper"
+
+RSpec.feature "Log search", type: :feature do
+  it "filters logs related to a customer name", :js do
+    c1 = create(:customer, name: "John Petrucci")
+    c2 = create(:customer, name: "John Myung")
+    c3 = create(:customer, name: "James LaBrie")
+    o1a = create(:order, customer: c1)
+    o2 = create(:order, customer: c2)
+    o3 = create(:order, customer: c3)
+    o1b = create(:order, customer: c1)
+
+    [c1, c2, o1a, c3, o2, o3, o1b].each do |record|
+      create(:log_entry, logeable: record)
+    end
+
+    visit admin_log_entries_path
+    expect(page).to have_records_table(rows: 7)
+
+    fill_in :search, with: "John"
+    submit_search
+    expect(page).to have_records_table(rows: 5)
+  end
+
+  def have_records_table(rows:)
+    have_css("[role=main] table tr[data-url]", count: rows)
+  end
+
+  def submit_search
+    page.execute_script("$('.search').submit()")
+  end
+end