Add "Mark all as done" button

app/controllers/dashboard/todos_controller.rb

 class Dashboard::TodosController < Dashboard::ApplicationController
+  before_filter :find_todos, only: [:index, :destroy_all]
+
   def index
-    @todos = TodosFinder.new(current_user, params).execute
     @todos = @todos.page(params[:page]).per(PER_PAGE)
   end
 
@@ -13,9 +14,22 @@ class Dashboard::TodosController < Dashboard::ApplicationController
     end
   end
 
+  def destroy_all
+    @todos.each(&:done)
+
+    respond_to do |format|
+      format.html { redirect_to dashboard_todos_path, notice: 'All todos were marked as done.' }
+      format.js { render nothing: true }
+    end
+  end
+
   private
 
   def todo
     @todo ||= current_user.todos.find(params[:id])
   end
+
+  def find_todos
+    @todos = TodosFinder.new(current_user, params).execute
+  end
 end

app/helpers/todos_helper.rb

@@ -19,6 +19,32 @@ module TodosHelper
                       todo.project, todo.target], anchor: anchor)
   end
 
+  def todos_filter_params
+    {
+      state:      params[:state],
+      project_id: params[:project_id],
+      author_id:  params[:author_id],
+      type:       params[:type],
+      action_id:  params[:action_id],
+    }
+  end
+
+  def todos_filter_path(options = {})
+    without = options.delete(:without)
+
+    options = todos_filter_params.merge(options)
+
+    if without.present?
+      without.each do |key|
+        options.delete(key)
+      end
+    end
+
+    path = request.path
+    path << "?#{options.to_param}"
+    path
+  end
+
   def todo_actions_options
     actions = [
       OpenStruct.new(id: '', title: 'Any Action'),

app/views/dashboard/todos/index.html.haml

@@ -4,21 +4,25 @@
 .top-area
   %ul.nav-links
     %li{class: ('active' if params[:state].blank? || params[:state] == 'pending')}
-      = link_to page_filter_path(state: 'pending') do
+      = link_to todos_filter_path(state: 'pending') do
         %span
           To do
         %span{class: 'badge'}
           = todos_pending_count
     %li{class: ('active' if params[:state] == 'done')}
-      = link_to page_filter_path(state: 'done') do
+      = link_to todos_filter_path(state: 'done') do
         %span
           Done
         %span{class: 'badge'}
           = todos_done_count
 
+  .nav-controls
+    - if @todos.any?(&:pending?)
+      = link_to 'Mark all as done', destroy_all_dashboard_todos_path(todos_filter_params), class: 'btn', method: :delete
+
 .todos-filters
   .gray-content-block.second-block
-    = form_tag page_filter_path(without: [:assignee_id, :milestone_title, :label_name, :scope, :sort]), method: :get, class: 'filter-form' do
+    = form_tag todos_filter_path(without: [:project_id, :author_id, :type, :action_id]), method: :get, class: 'filter-form' do
       .filter-item.inline
         = select_tag('project_id', todo_projects_options,
           class: 'select2 trigger-submit', include_blank: true,
@@ -47,7 +51,7 @@
           = render group[1]
     = paginate @todos, theme: "gitlab"
   - else
-    .nothing-here-block No todos to show
+    .nothing-here-block You're all done!
 
 :javascript
   new UsersSelect();