wiki pages: fix redirects to exact matches during search.

Change wiki page search to redirect to exact matches only when using the
quick search bar. Fixes searches sometimes unexpectedly redirecting when
doing a regular (non-quick) search that happens to return a single result.

Also remove the logic that tries to expand the search when no results
are found. This will eventually be replaced with a smarter "did you mean?"
search.

app/controllers/wiki_pages_controller.rb

@@ -17,16 +17,11 @@ class WikiPagesController < ApplicationController
 
   def index
     @wiki_pages = WikiPage.paginated_search(params)
-    respond_with(@wiki_pages) do |format|
+
-      format.html do
+    if params[:redirect].to_s.truthy? && @wiki_pages.one?
-        if params[:page].nil? || params[:page].to_i == 1
+      redirect_to @wiki_pages.first
-          if @wiki_pages.length == 1
+    else
-            redirect_to(wiki_page_path(@wiki_pages.first))
+      respond_with(@wiki_pages)
-          elsif @wiki_pages.length == 0 && params[:search][:title].present? && params[:search][:title] !~ /\*/
-            redirect_to(wiki_pages_path(:search => {:title => "*#{params[:search][:title]}*"}))
-          end
-        end
-      end
     end
   end
 

app/helpers/application_helper.rb

@@ -164,7 +164,8 @@ module ApplicationHelper
   def quick_search_form_for(attribute, url, name, autocomplete: nil, &block)
     tag.li do
       search_form_for(url, classes: "quick-search-form one-line-form") do |f|
-        f.input attribute, label: false, placeholder: "Search #{name}", input_html: { id: nil, "data-autocomplete": autocomplete }
+        out  = tag.input type: :hidden, name: :redirect, value: "1"
+        out += f.input attribute, label: false, placeholder: "Search #{name}", input_html: { id: nil, "data-autocomplete": autocomplete }
       end
     end
   end

app/views/layouts/_main_links.html.erb

@@ -14,7 +14,7 @@
     <%= nav_link_to("Implications", tag_implications_path) %>
   <% end %>
   <%= nav_link_to("Pools", gallery_pools_path) %>
-  <%= nav_link_to("Wiki", wiki_pages_path(:title => "help:home")) %>
+  <%= nav_link_to("Wiki", wiki_page_path("help:home")) %>
   <%= nav_link_to("Forum", forum_topics_path, :class => (CurrentUser.has_forum_been_updated? ? "forum-updated" : nil)) %>
   <% if CurrentUser.is_moderator? %>
     <%= nav_link_to("Dashboard", moderator_dashboard_path) %>

test/functional/wiki_pages_controller_test.rb

@@ -22,12 +22,14 @@ class WikiPagesControllerTest < ActionDispatch::IntegrationTest
 
       should "list all wiki_pages (with search)" do
         get wiki_pages_path, params: {:search => {:title => "abc"}}
-        assert_redirected_to(wiki_page_path(@wiki_page_abc))
+        assert_response :success
+        assert_select "tr td:first-child", text: "abc"
       end
 
       should "list wiki_pages without tags with order=post_count" do
         get wiki_pages_path, params: {:search => {:title => "abc", :order => "post_count"}}
-        assert_redirected_to(wiki_page_path(@wiki_page_abc))
+        assert_response :success
+        assert_select "tr td:first-child", text: "abc"
       end
     end