Using autofocus and text_field form helpers in Rails

f.text_field :email, autofocus: true

This will work:

text_field_tag :reseller, '', autofocus: true

Note the empty value argument.

ruby forms html

<%= f.text_field :email, nil, :autofocus => true %>will work.

similarly, if you want to use other HTML5 attributes and CSS classes, you can write :

<%= f.text_field :email, nil, :autofocus => true, :placeholder => "Your email Here", :class => "active", :style => "color: #333;" %>

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