### Example API Request for Employees

Source: https://github.com/graphiti-api/graphiti/blob/main/README.md

An example HTTP GET request to the API endpoint for employees, demonstrating filtering by title and age using query parameters.

```http
GET http://localhost:3000/api/v1/employees?filter[title][eq]=Future Government Administrator&filter[age][lt]=40
```

--------------------------------

### Implement Employee Controller in Ruby

Source: https://github.com/graphiti-api/graphiti/blob/main/README.md

Shows a boilerplate controller that interfaces with the EmployeeResource to handle common CRUD operations like index, show, create, update, and destroy, using Graphiti's resource methods.

```ruby
class EmployeesController < ApplicationController
  def index
    employees = EmployeeResource.all(params)
    respond_with(employees)
  end

  def show
    employee = EmployeeResource.find(params)
    respond_with(employee)
  end

  def create
    employee = EmployeeResource.build(params)

    if employee.save
      render jsonapi: employee, status: 201
    else
      render jsonapi_errors: employee
    end
  end

  def update
    employee = EmployeeResource.find(params)

    if employee.update_attributes
      render jsonapi: employee
    else
      render jsonapi_errors: employee
    end
  end

  def destroy
    employee = EmployeeResource.find(params)

    if employee.destroy
      render jsonapi: { meta: {} }, status: 200
    else
      render jsonapi_errors: employee
    end
  end
end
```

--------------------------------

### Define Employee Resource in Ruby

Source: https://github.com/graphiti-api/graphiti/blob/main/README.md

Demonstrates how to define a Graphiti resource for an Employee model, including attributes, relationships, filters, and sorting. It showcases defining has_many, has_one, many_to_many, and polymorphic relationships, as well as custom filters and sorts.

```ruby
class EmployeeResource < ApplicationResource
  attribute :first_name, :string
  attribute :last_name, :string
  attribute :age, :integer
  attribute :created_at, :datetime, writable: false
  attribute :updated_at, :datetime, writable: false
  attribute :title, :string, only: [:filterable, :sortable]

  has_many :positions
  has_many :tasks
  many_to_many :teams
  polymorphic_has_many :notes, as: :notable
  has_one :current_position, resource: PositionResource do
    params do |hash|
      hash[:filter][:current] = true
    end
  end

  filter :title, only: [:eq] do
    eq do |scope, value|
      scope.joins(:current_position).merge(Position.where(title: value))
    end
  end

  sort :title do |scope, value|
    scope.joins(:current_position).merge(Position.order(title: value))
  end

  sort :department_name, :string do |scope, value|
    scope.joins(current_position: :department)
      .merge(Department.order(name: value))
  end
end
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.