Module: Sinatra::Flash::Style

Defined in:
lib/sinatra/flash/style_patch.rb

Instance Method Summary collapse

Instance Method Details

#styled_flash(key = :flash) ⇒ String

A view helper for rendering flash messages to HTML with reasonable CSS structure. Handles multiple flash messages in one request. Wraps them in a <div> tag with id #flash containing a <div> for each message with classes of .flash and the message type. E.g.:

It is your responsibility to style these classes the way you want in your stylesheets.

@param[optional, String, Symbol] key Specifies which flash collection you want to display.

If you use this, the collection key will be appended to the top-level div id (e.g.,
'flash_login' if you pass a key of  :login).

Examples:

<div id='flash'>
  <div class='flash info'>Today is Tuesday, April 27th.</div>
  <div class='flash warning'>Missiles are headed to destroy the Earth!</div>
</div>

Returns:

  • (String) —

    Styled HTML if the flash contains messages, or an empty string if it’s empty.



23
24
25
26
27
28
 
# File 'lib/sinatra/flash/style_patch.rb', line 23

def styled_flash(key = :flash)
  return '' if flash(key).empty?
  id = (key == :flash ? 'flash' : "flash_#{key}")
  messages = flash(key).collect { |message| "  <div class='alert alert-#{message[0]}'>#{message[1]}</div>\n" }
  "<div id='#{id}'>\n" + messages.join + '</div>'
end