class Project < ApplicationRecord
  # We have 2 scopes, one for projects In Progress and one for projects Not Started
  scope :in_progress, -> {where(project_stage: "In Progress")}
  scope :not_started, -> {where(project_stage: "Not Started")}
  
  # Say we want to combine the scopes so we can see projects 
  # that are in progress or that have been awarded, but not started
  # This is where OR is handy :)
  scope :project_status, -> {in_progress.or(not_started)}
end

class ProjectsController < ApplicationController
  def some_action
    # We can call the scope from some action in the controller to get the results
    @projects = Project.project_status
  end
end