User's blocked field refactored to use state machine

app/controllers/admin/users_controller.rb

@@ -45,7 +45,7 @@ class Admin::UsersController < Admin::ApplicationController
   end
 
   def unblock
-    if admin_user.update_attribute(:blocked, false)
+    if admin_user.activate
       redirect_to :back, alert: "Successfully unblocked"
     else
       redirect_to :back, alert: "Error occured. User was not unblocked"

app/controllers/application_controller.rb

@@ -30,7 +30,7 @@ class ApplicationController < ActionController::Base
   end
 
   def reject_blocked!
-    if current_user && current_user.blocked
+    if current_user && current_user.blocked?
       sign_out current_user
       flash[:alert] = "Your account is blocked. Retry when an admin unblock it."
       redirect_to new_user_session_path
@@ -38,7 +38,7 @@ class ApplicationController < ActionController::Base
   end
 
   def after_sign_in_path_for resource
-    if resource.is_a?(User) && resource.respond_to?(:blocked) && resource.blocked
+    if resource.is_a?(User) && resource.respond_to?(:blocked?) && resource.blocked?
       sign_out resource
       flash[:alert] = "Your account is blocked. Retry when an admin unblock it."
       new_user_session_path

app/models/user.rb

@@ -25,7 +25,7 @@
 #  dark_scheme            :boolean          default(FALSE), not null
 #  theme_id               :integer          default(1), not null
 #  bio                    :string(255)
-#  blocked                :boolean          default(FALSE), not null
+#  state                  :string(255)
 #  failed_attempts        :integer          default(0)
 #  locked_at              :datetime
 #  extern_uid             :string(255)
@@ -87,10 +87,27 @@ class User < ActiveRecord::Base
 
   delegate :path, to: :namespace, allow_nil: true, prefix: true
 
+  state_machine :state, initial: :active do
+    after_transition any => :blocked do |user, transition|
+      # Remove user from all projects and
+      user.users_projects.find_each do |membership|
+        return false unless membership.destroy
+      end
+    end
+
+    event :block do
+      transition active: :blocked
+    end
+
+    event :activate do
+      transition blocked: :active
+    end
+  end
+
   # Scopes
   scope :admins, -> { where(admin:  true) }
-  scope :blocked, -> { where(blocked:  true) }
-  scope :active, -> { where(blocked:  false) }
+  scope :blocked, -> { with_state(:blocked) }
+  scope :active, -> { with_state(:active) }
   scope :alphabetically, -> { order('name ASC') }
   scope :in_team, ->(team){ where(id: team.member_ids) }
   scope :not_in_team, ->(team){ where('users.id NOT IN (:ids)', ids: team.member_ids) }
@@ -260,17 +277,6 @@ class User < ActiveRecord::Base
     MergeRequest.cared(self)
   end
 
-  # Remove user from all projects and
-  # set blocked attribute to true
-  def block
-    users_projects.find_each do |membership|
-      return false unless membership.destroy
-    end
-
-    self.blocked = true
-    save
-  end
-
   def projects_limit_percent
     return 100 if projects_limit.zero?
     (personal_projects.count.to_f / projects_limit) * 100

app/views/admin/users/_form.html.haml

@@ -61,7 +61,7 @@
         .span4
           - unless @admin_user.new_record?
             .alert.alert-error
-              - if @admin_user.blocked
+              - if @admin_user.blocked?
                 %p This user is blocked and is not able to login to GitLab
                 = link_to 'Unblock User', unblock_admin_user_path(@admin_user), method: :put, class: "btn btn-small"
               - else

app/views/admin/users/index.html.haml

@@ -53,7 +53,7 @@
                
               = link_to 'Edit', edit_admin_user_path(user), id: "edit_#{dom_id(user)}", class: "btn btn-small"
               - unless user == current_user
-                - if user.blocked
+                - if user.blocked?
                   = link_to 'Unblock', unblock_admin_user_path(user), method: :put, class: "btn btn-small success"
                 - else
                   = link_to 'Block', block_admin_user_path(user), confirm: 'USER WILL BE BLOCKED! Are you sure?', method: :put, class: "btn btn-small btn-remove"

app/views/admin/users/show.html.haml

@@ -3,7 +3,7 @@
     %h3.page_title
       = image_tag gravatar_icon(@admin_user.email, 90), class: "avatar s90"
       = @admin_user.name
-      - if @admin_user.blocked
+      - if @admin_user.blocked?
         %span.cred (Blocked)
       - if @admin_user.admin
         %span.cred (Admin)

app/views/team_members/_team_member.html.haml

@@ -20,7 +20,7 @@
           %span.label This is you!
         - if @project.namespace_owner == user
           %span.label Owner
-        - elsif user.blocked
+        - elsif user.blocked?
           %span.label Blocked
         - elsif allow_admin
           = link_to project_team_member_path(@project, user), confirm: remove_from_project_team_message(@project, user), method: :delete, class: "btn-tiny btn btn-remove" do

app/views/teams/members/_show.html.haml

@@ -23,7 +23,7 @@
         %span.btn.disabled This is you!
       - if @team.owner == user
         %span.btn.disabled Owner
-      - elsif user.blocked
+      - elsif user.blocked?
         %span.btn.disabled.blocked Blocked
       - elsif allow_admin
         = link_to team_member_path(@team, user), confirm: remove_from_user_team_message(@team, user), method: :delete, class: "btn-tiny btn btn-remove", title: "Remove from team" do