Only trigger actual search if a search string is present

app/controllers/search_controller.rb

@@ -2,34 +2,34 @@ class SearchController < ApplicationController
   include SearchHelper
 
   def show
+    return if params[:search].nil? || params[:search].blank?
     @project = Project.find_by(id: params[:project_id]) if params[:project_id].present?
     @group = Group.find_by(id: params[:group_id]) if params[:group_id].present?
     @scope = params[:scope]
     @show_snippets = params[:snippets].eql? 'true'
 
-    @search_results = if @project
-                        return access_denied! unless can?(current_user, :download_code, @project)
-
-                        unless %w(blobs notes issues merge_requests wiki_blobs).
-                                 include?(@scope)
-                          @scope = 'blobs'
-                        end
-
-                        Search::ProjectService.new(@project, current_user, params).execute
-                      elsif @show_snippets
-                        unless %w(snippet_blobs snippet_titles).include?(@scope)
-                          @scope = 'snippet_blobs'
-                        end
-
-                        Search::SnippetService.new(current_user, params).execute
-                      else
-                        unless %w(projects issues merge_requests).include?(@scope)
-                          @scope = 'projects'
-                        end
-
-                        Search::GlobalService.new(current_user, params).execute
-                      end
-
+    @search_results = 
+      if @project
+        return access_denied! unless can?(current_user, :download_code, @project)
+
+        unless %w(blobs notes issues merge_requests wiki_blobs).
+          include?(@scope)
+          @scope = 'blobs'
+        end
+
+        Search::ProjectService.new(@project, current_user, params).execute
+      elsif @show_snippets
+        unless %w(snippet_blobs snippet_titles).include?(@scope)
+          @scope = 'snippet_blobs'
+        end
+
+        Search::SnippetService.new(current_user, params).execute
+      else
+        unless %w(projects issues merge_requests).include?(@scope)
+          @scope = 'projects'
+        end
+        Search::GlobalService.new(current_user, params).execute
+      end
     @objects = @search_results.objects(@scope, params[:page])
   end