title: Change Status from Pending to Approved
body: <p>Hello here i have a haml index. </p>
  
  <pre><code>%h1 Requests
  %table
  %thead
    %tr
      %th Request Template
      %th User
      %th Sent At
      %th Status
  %tbody
    - @requests.each do |request|
      %tr
        %td= link_to request.request_template_id, admin_request_template(requests.request_template_id)
        %td= request.user_id
        %td= request.request_sent_at
        %td= request.status
  </code></pre>
  
  <p>If you see on the last line it says request.status. Right now it displays the status which is set to pending as default using an after_save in the Request Model. </p>
  
  <p><strong>I will like the user to click on the status and change it to Approved. How do i to do this?</strong> I have an array that can display the statuses. I also have a status column for the Requests table. </p>
  
  <p>Please see my Request Model below. </p>
  
  <pre><code>class Request &lt; ActiveRecord::Base
    belongs_to :request_template
    belongs_to :user
  
    has_many   :request_answers, autosave: true
  
    validates :request_template, :user, presence: true
  
    after_create :send_notification, :status_pending
  
    STATUSES= %w[pending approved]
  
    def send_notification
      RequestMailer.delay.new_request_admin_notification(id)
      request_notification_sent_date!
    end
  
    def request_notification_sent_date!
      update_attribute :request_sent_at, Time.current
    end
  
    def pending!
      update_attribute :status, "pending"
    end
  
    def approved!
      update_attribute :status, "approved"
    end
  end
  </code></pre>