Refactor code

app/controllers/products_controller.rb

@@ -2,7 +2,7 @@ class ProductsController < ApplicationController
   before_action :authenticate_user!, only: [:new, :edit, :create, :update, :destroy]
   before_action :set_product, only: :show
   before_action :user_can_edit_product, only: [:edit, :update, :destroy]
-  before_action :set_search, only: [:create, :update, :destroy]
+  before_action :set_solr, only: [:create, :update, :destroy]
 
   # GET /products/new
   def new
@@ -13,7 +13,7 @@ class ProductsController < ApplicationController
   def create
     @product = Product.new(product_params.merge(user_id: current_user.id))
     if @product.save
-      @search.add_product(@product)
+      @solr.add_product_index(@product)
       redirect_to root_url, flash: { success: "Product #{@product.title} is sucessfully created" }
     else
       render 'new'
@@ -23,7 +23,7 @@ class ProductsController < ApplicationController
   # PATCH/PUT /products/1
   def update
     if @product.update(product_params)
-      @search.update_product(@product)
+      @solr.update_product_index(@product)
       redirect_to root_url, flash: { success: "Product #{@product.title} is sucessfully updated" }
     else
       render 'edit'
@@ -34,7 +34,7 @@ class ProductsController < ApplicationController
   def destroy
     if @product.destroy
       flash[:success] = "Product #{@product.title} deleted"
-      @search.delete_product(@product)
+      @solr.delete_product_index(@product)
     else
       flash[:alert] = "Product #{@product.title} can't be deleted"
     end
@@ -61,7 +61,7 @@ class ProductsController < ApplicationController
     redirect_to root_url, flash: { alert: 'You do not have permission to edit this product' } if @product.blank?
   end
 
-  def set_search
-    @search = Search.new
+  def set_solr
+    @solr = Solr.new
   end
 end
\ No newline at end of file

app/services/product_filter.rb

 class ProductFilter
-  def initialize(solr)
-    @solr = solr
+  def filter_product_title(title)
+    title.blank? ? 'title:*' : "title:#{RSolr.solr_escape(title)}"
   end
 
-  def filter_search_query(search_query)
-    search_query = search_query.blank? ? '*' : RSolr.solr_escape(search_query)
-    @solr.query_product_title(search_query)
-  end
-
-  def filter_suggest_query(suggest_query)
-    @solr.query_product_suggestion(RSolr.solr_escape(suggest_query))
+  def filter_suggest_keyword(keyword)
+    RSolr.solr_escape(keyword)
   end
 end
\ No newline at end of file

app/services/search.rb

 class Search
   def initialize
-    @solr = SolrSearch.new
-    @product_filter = ProductFilter.new(@solr)
+    @solr = Solr.new
   end
 
+  # Get matched products with keyword
   def products(search_query)
-    matched_products(@product_filter.filter_search_query(search_query))
+    matched_products(ProductFilter.filter_product_title(search_query))
   end
 
+  # Get suggested keywords
   def suggested_keywords(keyword)
-    @product_filter.filter_suggest_query(keyword).map { |kw| kw['term'] }
-  end
-
-  def update_product(product)
-    @solr.update_product_index(product)
-  end
-
-  def add_product(product)
-    @solr.add_product_index(product)
-  end
-
-  def delete_product(product)
-    @solr.delete_product_index(product)
+    keywords = @solr.exec_suggest_request(ProductFilter.filter_suggest_keyword(keyword))
+    keywords.map { |kw| kw['term'] }
   end
 
   private

app/services/solr_search.rb → app/services/solr.rb

 require 'rsolr'
 
-class SolrSearch
+class Solr
   attr_accessor :rsolr
 
   def initialize
     @rsolr = RSolr.connect url: Settings.rsolr.address
   end
 
-  def query_product_title(search_query)
-    response = rsolr.get 'select', params: { q: "title:#{search_query}" }
+  def exec_select_request(query)
+    response = rsolr.get 'select', params: { q: query }
     response['response']['docs']
   end
 
-  def query_product_suggestion(search_query)
-    response = rsolr.get 'suggest', params: { 'suggest.q' => search_query }
-    response['suggest']['productSuggester'][search_query]['suggestions']
+  def exec_suggest_request(query)
+    response = rsolr.get 'suggest', params: { 'suggest.q' => query }
+    response['suggest']['productSuggester'][query]['suggestions']
+  end
+
+  def add_products_indexes(products)
+    rsolr.add products
   end
 
   def update_product_index(product)

lib/tasks/vs_solr.rake

 namespace :vs_solr do
   desc 'Import product data from database'
   task product: :environment do
-    documents = []
+    products = []
     Product.all.each do |product|
-      documents << { id: product.id, title: product.title, price: product.price }
+      products << { id: product.id,
+                    title: product.title,
+                    price: product.price }
     end
-    SolrSearch.new.rsolr.add documents
+    Solr.new.add_products_indexes(products)
   end
 
   desc 'Remove all index from Solr'
   task remove: :environment do
-    SolrSearch.new.delete_all_product_indexes
+    Solr.new.delete_all_product_indexes
   end
 end