Authenticate

[claytonflesher]

Don't merge. Just here for learning purposes.

[farishkash]

Clayton use some LET

[matugm]

What do you think about this regex for the email? /\A\S+@\S+\.\S+\z/
\S stands for 'not an space'

[runyans7]

On the conversation about using form_for or form_tag. I have messed around a lot with forms trying to learn them and the biggest difference I have found is that the model backed form puts the params into a nested hash that allows for mass assignment.

Here is the form that I used:

# Non model backed
<%= form_tag "/posts" do %>
  <%= label_tag :title %>
  <%= text_field_tag :title %>
  <br/>
  <%= submit_tag "Create Post" %>
<% end %>

# Model backed
<%= form_for @post do |f| %>
  <%= f.label :title %>
  <%= f.text_field :title %>
  <br>
  <%= f.submit 'Create Post' %>
<% end %>

Here are the params for a non-model backed form using form_tag:

=> {"utf8"=>"✓",
 "authenticity_token"=>"nXTXG/o6vRICobR/ho1xkpu9KvHFkqIbuh90zcmHkaM=",
 "title"=>"Test post",
 "commit"=>"Create Post",
 "action"=>"create",
 "controller"=>"posts"}

and here are the params for the model backed form:

=> {"utf8"=>"✓",
 "authenticity_token"=>"nXTXG/o6vRICobR/ho1xkpu9KvHFkqIbuh90zcmHkaM=",
 "post"=>{"title"=>"Test post"},
 "commit"=>"Create Post",
 "action"=>"create",
 "controller"=>"posts"}

It's a subtle but important difference.

[claytonflesher]

One great use case for form_tags might be when you're building multiple objects with the same form.

For example, I have an app that uses of form_tag to build a User from :email and :password, and a UserProfile with :address and an api call performed using :address.

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