Oh, CRUD!

Forging Your On Path Through Rails

What's all this crud?

Create

Read

Update

Delete

CRUD-y HTML

CRUD

Create

Read

Update

Delete

HTML Verbs

post

get

patch/put

delete

=>

=>

=>

=>

Rails CRUD

Show me your crud

Run 'rake routes' in your Terminal to see a nifty chart of HTML Verbs and Rails Actions

Creating Our Own CRUD

Rails.application.routes.draw do

  # we've worked with get:  

  get 'welcome/about'

  get 'give_us_a_call' => 'welcome#contact'

  # we've set the root:
  
  root 'welcome#index

  # and we've seen the bundled routes Scaffolding provides:

  resources :products

  # now let's work, without the scaffold's help, with post:

  post 'welcome/save' => 'welcome#save'


end

$ rails g controller Contact index

<h1>Contact Me</h1>


<div>
  <%= form_tag("/contact/save") do %>



  <% end %>
</div>

Creating Our Own CRUD

Let's create a new controller...

And let's start to build a form in that view...

Giving Form to our form

Let's build the form out a bit:

<h1>Contact Me</h1>


<div>
  <%= form_tag("/contact/save") do %>

  First Name: <%= text_field_tag :first_name %><br />

  Last Name: <%= text_field_tag :last_name %><br />

  Email: <%= text_field_tag :email %>

  <% end %>
</div>

Hmm...something's missing...

Submit!

...the form. Please.

<h1>Contact Me</h1>


<div>
  <%= form_tag("/contact/save") do %>

    First Name: <%= text_field_tag :first_name %><br />

    Last Name: <%= text_field_tag :last_name %><br />

    Email: <%= text_field_tag :email %><br />

    <br />

    <%= submit_tag "Submit" %>

  <% end %>
</div>

all in the routing

Rails.application.routes.draw do

  get 'contact/index'



  get 'contact/save'

  post 'contact/save' => 'contact#save'

end

action time!

class ContactController < ApplicationController

  def index

  end



  def save

    #save all the params as instance variables!

    @first_name = params[:first_name]

    @last_name = params[:last_name]

    @email = params[:email]

  end

end

Display the results

<h1>Submission Accepted!</h1>


<div>
  <p>Your First Name: <%= @first_name %></p>

  <p>Your Last Name: <%= @last_name %></p>

  <p>Your Email: <%= @email %></p>
</div>

Creating a Form: A Review Checklist

• Create a Controller w/ 2 Views (index, display)
• Modify 'display' route:

get 'welcome/display'

post 'welcome/display' => 'welcome#display'

• Create the Form in the 'index' page
• Form points to 'display' page
• In the Controller: @variables = params[:variables]