Create a separate helper to check if we show particular tab on a search page

app/helpers/projects_helper.rb

@@ -85,6 +85,12 @@ module ProjectsHelper
     @nav_tabs ||= get_project_nav_tabs(@project, current_user)
   end
+  def project_search_tabs?(tab)
+    abilities = Array(search_tab_ability_map[tab])
+
+    abilities.any? { |ability| can?(current_user, ability, @project) }
+  end
+
   def project_nav_tab?(name)
     project_nav_tabs.include? name
   end
@@ -203,7 +209,17 @@ module ProjectsHelper
       nav_tabs << :container_registry
     end
-    tab_ability_map = {
+    tab_ability_map.each do |tab, ability|
+      if can?(current_user, ability, project)
+        nav_tabs << tab
+      end
+    end
+
+    nav_tabs.flatten
+  end
+
+  def tab_ability_map
+    {
       environments: :read_environment,
       milestones:   :read_milestone,
       pipelines:    :read_pipeline,
@@ -215,14 +231,15 @@ module ProjectsHelper
       team:         :read_project_member,
       wiki:         :read_wiki
     }
-    tab_ability_map.each do |tab, ability|
-      if can?(current_user, ability, project)
-        nav_tabs << tab
-      end
-    end
-
-    nav_tabs.flatten
+  end
+  def search_tab_ability_map
+    @search_tab_ability_map ||= tab_ability_map.merge(
+      blobs:          :download_code,
+      commits:        :download_code,
+      merge_requests: :read_merge_request,
+      notes:          [:read_merge_request, :download_code, :read_issue, :read_project_snippet]
+    )
   end
   def project_lfs_status(project)

app/helpers/search_helper.rb

@@ -33,12 +33,6 @@ module SearchHelper
   def parse_search_result(result)
     Gitlab::ProjectSearchResults.parse_search_result(result)
   end
-  
-  def show_notes_tab?
-    [:read_merge_request, :download_code, :read_issue, :read_project_snippet].all? do |ability|
-      can?(current_user, :read_merge_request, @project)
-    end
-  end
   private

app/views/search/_category.html.haml

@@ -3,43 +3,43 @@
   .fade-right= icon('angle-right')
   %ul.nav-links.search-filter.scrolling-tabs
     - if @project
-      - if can?(current_user, :download_code, @project)
+      - if project_search_tabs?(:blobs)
         %li{ class: active_when(@scope == 'blobs') }
           = link_to search_filter_path(scope: 'blobs') do
             Code
             %span.badge
               = @search_results.blobs_count
-      - if can?(current_user, :read_issue, @project)
+      - if project_search_tabs?(:issues)
         %li{ class: active_when(@scope == 'issues') }
           = link_to search_filter_path(scope: 'issues') do
             Issues
             %span.badge
               = @search_results.issues_count
-      - if can?(current_user, :read_merge_request, @project)
+      - if project_search_tabs?(:merge_requests)
         %li{ class: active_when(@scope == 'merge_requests') }
           = link_to search_filter_path(scope: 'merge_requests') do
             Merge requests
             %span.badge
               = @search_results.merge_requests_count
-      - if can?(current_user, :read_milestone, @project)
+      - if project_search_tabs?(:milestones)
         %li{ class: active_when(@scope == 'milestones') }
           = link_to search_filter_path(scope: 'milestones') do
             Milestones
             %span.badge
               = @search_results.milestones_count
-      - if show_notes_tab?
+      - if project_search_tabs?(:notes)
         %li{ class: active_when(@scope == 'notes') }
           = link_to search_filter_path(scope: 'notes') do
             Comments
             %span.badge
               = @search_results.notes_count
-      - if can?(current_user, :read_wiki, @project)
+      - if project_search_tabs?(:wiki)
         %li{ class: active_when(@scope == 'wiki_blobs') }
           = link_to search_filter_path(scope: 'wiki_blobs') do
             Wiki
             %span.badge
               = @search_results.wiki_blobs_count
-      - if can?(current_user, :download_code, @project)
+      - if project_search_tabs?(:commits)
         %li{ class: active_when(@scope == 'commits') }
           = link_to search_filter_path(scope: 'commits') do
             Commits