Picture-Tag Rails A Rails view helper extension to generate HTML5 tag markup
from the W3C HTML Responsive Images Extension Proposal. w3.org/community/respimg Current Version 0.0.6 Requirements Ruby on Rails > 3.0 and < 4.0 Installation Gemfile Add this line to your applications Gemfile. gem picture_tag-rails Manual Or install it yourself. gem install picture_tag-rails Usage Add to some Ruby file in your Rails app. Use it in your views as you would the image_tag() helper. <%= picture_tag(image_path, options) % > Examples The vanilla usage with default sizes and media queries: <%= picture_tag( " cat.jpg " , alt: " Kitty cat! " ) % > produces: < picture >
< source media = " (min-width: 1600px) " srcset = " cat-large.jpg 1x, cat-large@2x.jpg 2x " />
< source media = " (min-width: 1000px) " srcset = " cat-medium.jpg 1x, cat-medium@2x.jpg 2x " />
< source media = " (min-width: 768px) " srcset = " cat-small.jpg 1x, cat-small@2x.jpg 2x " />
< source media = " (min-width: 480px) " srcset = " cat-tiny.jpg 1x, cat-tiny@2x.jpg 2x " />
< source srcset = " cat-tiny.jpg 1x, cat-tiny@2x.jpg 2x " />
< img alt = " Kitty cat! " src = " cat-tiny.jpg " />
Options To exclude certain elements with media queries above a max width: <%= picture_tag(image_path, max_width: " 600px " ) % > To override the default media queries and names: <%= picture_tag(image_path, sizes: { itty_bitty: " (min-width: 10px) " }) % > To prefix (opposed to suffix) the filename with size (/images/small-kitty.jpg): <%= picture_tag(image_path, prefix_size: true }) % > To preload a custom default placeholder image: <%= picture_tag(image_path, default_image: /images/placeholder.png }) % > All image_tag options are valid for picture_tag .
See image_tag Docs Paperclip Paperclip options for default media queries and sizes. has_attached_file :image , { styles: { tiny: " 320x " , small: " 480x " , medium: " 768x " , large: " 1000x " , huge: " 1600x " , %s( tiny@2x ) => " 640x " , %s( small@2x ) => " 960x " , %s( medium@2x ) => " 1536x " , %s( large@2x ) => " 2000x " , %s( huge@2x ) => " 3200x " } Configuration Retina support can be disabled by adding a configure block to your config PictureTag .configure do | config |
config.display_high_def = false end TODO Add optional paperclip integration functionality Intergrate with Travis.ci Implement Rails 4 support Authors Bookis Smuin / @bookis Chad Crissman / @crissmancd John Lucia / @johnlucia Levi Brown / @levibrown Colton Fent / @colto Contributions Fork it Get it running (see Installation above) Create your feature branch ( git checkout -b my-new-feature ) Write your code and specs Commit your changes ( git commit -am Add some feature ) Push to the branch ( git push origin my-new-feature ) Create new Pull Request If you find bugs, have feature requests or questions, please file an issue . Specs rake spec Releases TODO how do you do a release ? License Copyright (c) 2012 G5 MIT License Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions: The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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