index.html.erb

<h1>Listing jobs</h1>

<table>
  <thead>
    <tr>
      <th>Title</th>
      <th>Description</th>
      <th>Tea</th>
      <th></th>
      <th></th>
      <th></th>
    </tr>
  </thead>

  <tbody>
    <% @jobs.each do |job| %>
      <tr>
        <td><%= job.title %></td>
        <td><%= job.description %></td>
        <td><%= job.tea %></td>
        <td><%= link_to 'Show', job %></td>
        <td><%= link_to 'Edit', edit_job_path(job) %></td>
        <td><%= link_to 'Destroy', job, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

<br>

<%= link_to 'New Job', new_job_path %>

jobs_controller.rb

class JobsController < ApplicationController
  before_action :set_job, only: [:show, :edit, :update, :destroy]

  # GET /jobs
  # GET /jobs.json
  def index
    @jobs = Job.all

    respond_to do |format|
      format.html
      format.json { render json: @jobs }
    end
  end

  # GET /jobs/1
  # GET /jobs/1.json
  def show
    respond_to do |format|
      format.html
      format.json { render json: @job }
    end
  end

  # GET /jobs/new
  def new
    @job = Job.new
  end

  # GET /jobs/1/edit
  def edit
  end

  # POST /jobs
  # POST /jobs.json
  def create
    @job = Job.new(job_params)

    respond_to do |format|
      if @job.save
        format.html { redirect_to '/', notice: 'Job was successfully created.' }
        format.json { render action: 'show', status: :created, location: @job }
      else
        format.html { render action: 'new' }
        format.json { render json: @job.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /jobs/1
  # PATCH/PUT /jobs/1.json
  def update
    respond_to do |format|
      if @job.update(job_params)
        format.html { redirect_to @job, notice: 'Job was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: 'edit' }
        format.json { render json: @job.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /jobs/1
  # DELETE /jobs/1.json
  def destroy
    @job.destroy
    respond_to do |format|
      format.html { redirect_to jobs_url }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_job
      @job = Job.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def job_params
      params.require(:job).permit(:title, :description, :tea, :image)
    end
end

routes.rb

Railsportfolio::Application.routes.draw do
  root "home#index"
  resources :jobs
  scope :api do
    get '/jobs(.:format)' => 'jobs#index'
    get '/jobs/:id(.:format)' => 'jobs#show'
  end