To Examples

EmployeeRoster Example

Directions

1. Create a new Rails project named EmployeeRoster.
2. Generate a Rails scaffold named Employee with these fields.

   Field	Datatype
   name	string
   emp_id	integer
   salary	float
   manager_id	integer

3. Source code for the seed file EmployeeRoster/db/seeds.rb.
4. View the index pages of the Employee controller with this URL:
   

   http://localhost:3000/employees
   

• Put these statements in the Employee model:
  

  has_many :subordinates, class_name: 'Employee', 
    foreign_key: 'manager_id'
  belongs_to :manager, class_name: 'Employee'
  

• On the Employee index view, change the value displayed in the Manager column from
  

  <%= employee.manager_id %>
  

  to
  

  <%= employee.manager.name %>
  

• On the Employee show view at the bottom just above the Edit and Back links, show the list of all the employees subordinates:
  

  <h2>Subordinates of <%= @employee.name %></h2>
  
  <p>
    <% @employee.subordinates.each do |subord| %>
      <%= subord.name %> &nbsp;
    <% end %>
  </p>