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* Form Helpers Cheatsheet

Create forms, check boxes, radio buttons, select lists and more using Rails' built-in form helpers.

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form_for

form_for is used to easily manipulate HTML forms which are based upon ActiveRecord model objects:

    <%= form_for(:customer, @customer, :url => { :controller => "customers", :action => "create" }, :html => { :multipart => true, :method => :put }) do |f| %>
      <%= f.text_field :age %> 
      <%= text_field "customer", :age %>
      <%= submit_tag %>
    <% end %>

Parameters

:customer required

:symbol or "string"

The name of the model object for all the fields in the form. All input fields will be prefixed with this. Rails will also look for an @instance_variable with the same name which should contain an instance of an existing or new ActiveRecord model object

@customer optional

ActiveRecord model object

If the @instance_variable containing the model object is named differently, you can pass a variable containing the actual model object here

:url optional

"string" or {hash}

The URL to post the form to. Can take an explicit url as a string, or a hash in the same format as url_for

:html optional

{hash}

A {hash} of HTML attributes which will be added to the HTML <form> tag.

:method optional

:symbol

Pass as part of the {hash} of HTML attributes. Can be :put, :post, :get or :delete

 

 

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