Adds empty environments page

app/controllers/projects/application_controller.rb

@@ -5,7 +5,7 @@ class Projects::ApplicationController < ApplicationController
   skip_before_action :authenticate_user!
   before_action :project
   before_action :repository
-  before_action :environment
+  before_action :available_environment
   layout 'project'
 
   helper_method :repository, :can_collaborate_with_project?, :user_access
@@ -33,8 +33,8 @@ class Projects::ApplicationController < ApplicationController
     @repository ||= project.repository
   end
 
-  def environment
-    @environment ||= project.environments.first
+  def available_environment
+    @available_environment ||= project.environments.with_state(:available).first
   end
 
   def authorize_action!(action)

app/controllers/projects/environments_controller.rb

@@ -31,6 +31,10 @@ class Projects::EnvironmentsController < Projects::ApplicationController
     end
   end
 
+  def empty
+    render :empty
+  end
+
   def folder
     folder_environments = project.environments.where(environment_type: params[:id])
     @environments = folder_environments.with_state(params[:scope] || :available)

app/controllers/projects_controller.rb

@@ -8,7 +8,7 @@ class ProjectsController < Projects::ApplicationController
   before_action :redirect_git_extension, only: [:show]
   before_action :project, except: [:index, :new, :create]
   before_action :repository, except: [:index, :new, :create]
-  before_action :environment, except: [:index, :new, :create]
+  before_action :available_environment, except: [:index, :new, :create]
   before_action :assign_ref_vars, only: [:show], if: :repo_exists?
   before_action :tree, only: [:show], if: [:repo_exists?, :project_view_files?]
   before_action :lfs_blob_ids, only: [:show], if: [:repo_exists?, :project_view_files?]

app/helpers/environments_helper.rb

@@ -6,8 +6,8 @@ module EnvironmentsHelper
   end
 
   def metrics_path(project, environment)
-    metrics_project_environment_path(project, environment) if environment
+    return metrics_project_environment_path(project, environment) if environment
 
-    project_environments_path(project)
+    empty_project_environments_path(project)
   end
 end

app/views/layouts/nav/sidebar/_project.html.haml

@@ -211,7 +211,7 @@
 
             - if project_nav_tab? :environments
               = nav_link(controller: [:environments, :metrics]) do
-                = link_to metrics_path(@project, @environment), title: 'Metrics', class: 'shortcuts-environments' do
+                = link_to metrics_path(@project, @available_environment), title: 'Metrics', class: 'shortcuts-environments' do
                   %span
                     = _('Metrics')
 

app/views/projects/environments/empty.html.haml

+- page_title "Metrics"
+
+%h1
+  No environments were found
+
+= link_to "New Environment", new_project_environment_path(@project)

config/routes/project.rb

@@ -235,6 +235,7 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
         end
 
         collection do
+          get :empty
           get :folder, path: 'folders/*id', constraints: { format: /(html|json)/ }
         end