RSS feed on tagged content for author pages (publiclab#2161)

* RSS feed

* Added changes

app/controllers/tag_controller.rb

@@ -346,6 +346,24 @@ def rss
     end
   end
 
+  def rss_for_tagged_with_author
+    @user = User.find_by(name: params[:author])
+    @notes = Tag.tagged_nodes_by_author([params[:tagname]], @user)
+                 .limit(20)
+     respond_to do |format|
+       format.rss do
+         response.headers['Content-Type'] = 'application/xml; charset=utf-8'
+         response.headers['Access-Control-Allow-Origin'] = '*'
+         render layout: false
+       end
+       format.ics do
+         response.headers['Content-Disposition'] = "attachment; filename='public-lab-events.ics'"
+         response.headers['Content-Type'] = 'text/calendar; charset=utf-8'
+         render layout: false, template: 'tag/icalendar.ics', filename: 'public-lab-events.ics'
+      end
+    end
+  end
+
   def contributors
     set_sidebar :tags, [params[:id]], note_count: 20
     @tagnames = [params[:id]]

app/models/tag.rb

@@ -248,8 +248,8 @@ def self.tagged_nodes_by_author(tagname, user_id)
       @wildcard = true
       Node.where('term_data.name LIKE(?)', tagname[0..-2]+'%')
         .includes(:node_tag, :tag)
-        .order('node.nid DESC')
         .references(:term_data)
+        .order('node.nid DESC')
         .where('node.uid = ?', user_id)
     else
       Node.where('term_data.name = ?', tagname)

app/views/tag/rss_for_tagged_with_author.rss.builder

@@ -0,0 +1,38 @@
+xml.rss :version => '2.0', 'xmlns:atom' => 'http://www.w3.org/2005/Atom' do
+  xml.channel do
+    xml.title "Research tagged '#{params[:tagname]}' by #{params[:authorname]}"
+    xml.description "Open source environmental science research at Public Lab"
+    xml.link "https://#{request.host}/feed/tag/"+params[:tagname]+"/author/"+"params[:authorname]"+".rss"
+
+    @notes.each do |node|
+
+      body = node.body
+      uname = node.author.username
+       email = node.author.email
+       if node.author.user.has_power_tag('twitter')
+         uname = node.author.user.get_value_of_power_tag('twitter')
+       end
+       author_format = "@#{uname} (#{email})"
+       xml.item do
+       xml.title      " #{node.title}"
+       xml.author     author_format
+       if node.power_tag('date') != ''
+          begin
+            xml.pubDate     DateTime.strptime(node.power_tag('date'), "%m-%d-%Y").rfc822
+          rescue
+            xml.pubDate     node.power_tag('date')
+          end
+        else
+          xml.pubDate     node.created_at.to_s(:rfc822)
+        end
+        xml.link        "https://" + request.host.to_s + node.path
+        if node.main_image
+          xml.description  {  xml.cdata!("<img src='#{node.main_image.path(:default)}' alt='#{node.main_image.title}'>")  }
+        else
+          xml.description  {  xml.cdata!("<img src='https://i.publiclab.org/system/images/photos/000/000/354/medium/Boots-ground-02.png' alt='PublicLab'><p>#{body}</p>")  }
+        end
+        xml.guid        url_for :only_path => false, :controller => 'notes', :action => 'show', :id => node.nid
+      end
+    end
+  end
+end

config/routes.rb

@@ -93,6 +93,7 @@
   # these need precedence for tag listings
   get 'feed/tag/:tagname' => 'tag#rss'
   get ':node_type/tag(/:id)' => 'tag#show'
+  get 'feed/tag/:tagname/author/:authorname' => 'tag#rss_for_tagged_with_author'
   get 'wiki/raw/:id' => 'wiki#raw'
   get 'wiki/revisions/:id' => 'wiki#revisions'
   get 'wiki/revert/:id' => 'wiki#revert'

test/functional/tag_controller_test.rb

@@ -446,4 +446,10 @@ def setup
     assert_response :success
     assert_select 'table' # ensure a table is shown
   end
+  test 'rss with tagname and authorname' do
+    get :rss_for_tagged_with_author, tagname: 'test*', authorname: 'jeff', format: 'rss'
+    assert :success
+    assert_not_nil :notes
+    assert_equal 'application/rss+xml', @response.content_type
+  end
 end