automatically redirect urls containing author_id or assignee_id

app/controllers/projects/issues_controller.rb

@@ -23,6 +23,8 @@ class Projects::IssuesController < Projects::ApplicationController
   respond_to :html
 
   def index
+    return redirect_to_fixed_params if params[:assignee_id].present? || params[:author_id].present?
+
     @issues = issues_collection
     @issues = @issues.page(params[:page])
     if @issues.out_of_range? && @issues.total_pages != 0
@@ -211,6 +213,22 @@ class Projects::IssuesController < Projects::ApplicationController
     end
   end
 
+  def redirect_to_fixed_params
+    fixed_params = params.except(:assignee_id, :author_id)
+
+    if params[:assignee_id].present?
+      assignee = User.find_by_id(params[:assignee_id])
+      fixed_params.merge!(assignee_username: assignee.username) if assignee
+    end
+
+    if params[:author_id].present?
+      author = User.find_by_id(params[:author_id])
+      fixed_params.merge!(author_username: author.username) if author
+    end
+
+    redirect_to url_for(fixed_params)
+  end
+
   # Since iids are implemented only in 6.1
   # user may navigate to issue page using old global ids.
   #