Popular Javascript Photo galleries/carousels ready to use with Rails 3+.

gem 'rails-gallery'

• slideshow
• responsive
• galleria
• touch_touch

Please add more using a similar convention as is used for these galleries ;)

In application.css manifest file:

/*
 *= require gallery/responsive/elastislide
 *= require gallery/responsive
 *= require gallery/slideshow
 *= require gallery/galleria/classic
 *= require gallery/touch_touch
*/

Using Compass, f.ex in application.css.scss

@import 'gallery/responsive/elastislide';
@import 'gallery/responsive';
@import 'gallery/slideshow';
@import 'gallery/galleria/classic';
@import 'gallery/touch_touch';

In application.js manifest file:

//= require gallery/responsive
//= require gallery/slideshow
//= require gallery/galleria
//= require gallery/galleria/classic
//= require gallery/touch_touch

//= require jquery/jquery.easing-1.3
//= require jquery/jquery.elastislide
//= require jquery/jquery.tmpl.min

Note: For galleria, you need to specify the theme to use.

$(function(){

    // Initialize the gallery
    $('#thumbs a').touchTouch();

});

See TouchTouch and github repo

= touchgal_image photo

See minimalistic-slideshow-gallery for more info.

Pls Fill in here ;)

See responsive-image-gallery for more info.

Remove thumbnails

Change mode = 'carousel' to 'fullview'

Remove 'mode' bar

.rg-view{
  display: none;
}

.rg-thumbs {
  padding-top: 10px;
}

placement of thumbnails

To adjust placement of thumbnails, use: prependTo or appendTo in gallery/responsive.js:

  _addImageWrapper= function() {
    
    // adds the structure for the large image and the navigation buttons (if total items > 1)
    // also initializes the navigation events
    $('#img-wrapper-tmpl').tmpl( {itemsCount : itemsCount} ).prependTo( $rgGallery )

Automatic slideshow

I wanted the same thing and I find a way to do it. In the file gallery.js, in the function _initCarousel add these lines after:

$esCarousel.elastislide( 'setCurrent', current );

window.setInterval(function(){
  _navigate( 'right' );
}, 5000);

You just have to change 5000 to the value you want (milliseconds).

• Fancybox integration*

First you have to include the js and the css file of fancybox in the file where you have the carousel.

In the file responsive.js, replace this line:

$rgGallery.find('div.rg-image').empty().append('img src="' + largesrc + '"');

With this (which adds 'fancybox' class to all images):

$rgGallery.find('div.rg-image').empty().append('a class="fancybox" href="'+largesrc+ '" img src="' + largesrc + '" a');

In this line, don’t forget to add the " for the img and link tags.

Then do the fancybox magic on any class with the fancybox class

$(document).ready(function() {
  $(“.fancybox”).fancybox();
});

See galleria.io for more info.

quick start

#galleria { 
  width: 700px; 
  height: 400px; 
  background: white 
}

Important: You need to specify the width and height of the galleria container object in your CSS (here the #galleria DOM node). Otherwise you will get a trace error!

Galleria.loadTheme('gallery/galleria/classic.js');

// or simply
Galleria.loadNamedTheme('classic');

// or for asset path
Galleria.loadAssetTheme('classic');

// Then configure
Galleria.configure({
    imageCrop: true,
    transition: 'fade',
    log: true,
    // better handle image paths in assets folder!
    assets: true,
    // if pic can't be loaded use this one as fallback
    dummy: '/assets/photos/dummy.png' 
});  

Galleria.run('#galleria');

Troubleshooting a javascript gallery

Many of the Javascript galleries don't play very well with Rails and the asset pipeline as they expect a pretty simple application file structure/setup.

As an example, in order to make galleria work, I had to add a normalizeSrc method, which ensures that it looks for an image of the form /assets/... when configured with assets: true (See Galleria.configure options).

You might well encounter similar troubles. Another potential problem is browser caching, where you might well have to add a timestamp to the image url. Something like:

my/image.png?235325325323232

In some cases you might wanna hide the image tags and only execute/initialize the gallery when the images have finished loading, fx via the imagesLoaded jQuery plugin. Good luck!

The engine comes with a RGallery::Photosmodel which can encapsulate your photos for display and allows you to group photos in multiple pages. TheRGallery::Photo` class is a base class for describing a photo.

You should create your own Photo class that inherits from RGallery::Photo (or implements the API), which knows how to render and describe your photos.

Here is a rough example:

class Property
  class Photo < RGallery::Photo
    def initialize property, options = {}
      super
    end
    alias_method :property, :obj

    def path
      File.join folder, super
    end

    # mogrify -path fullpathto/temp2 -resize 60x60% -quality 60 -format jpg *.png

    # this will take all png files in your current directory (temp), 
    # resize to 60% (of largest dimension and keep aspect ratio), 
    # set jpg quality to 60 and convert to jpg.
    def thumb
      File.join folder, 'thumbs', file_path
    end

    def folder
      'gallery/images'
    end

    # Here we expect to create each photo with the 
    # id being set to a Property object
    def property
      id
    end

    # The filename of the picture. 
    # Here it assumes that the id assigned is a Property object, which has a 
    # method 'picture' which returns the picture id.
    def filename
      "property-#{property.picture}"
    end    

    def title
      property.title
    end

    def alt
      title
    end
    
    def self.extension
      :jpg
    end
  end
end

See the lib/rails-gallery/rgallery/photos.rb for details on how to extend this class appropriately to fit your scenario.

debugging

In order to help debug the configuration of the photo class, you can use the view_helper methods:

= validate_gallery_photo photo # prints error msg if invalid
- validate_gallery_photo! photo # raise error if invalid

Or you can include the RailsGallery::PhotoValidation module anywhere you want to leverage these methods!

The RailsGallery::ViewHelper is inluded into ActionView::Base by the engine.

The following are the main methods exposed:

• gallery_image type, photo
• gallery_imageset type, photo

Example usage:

= gallery_image :responsive, photo`
= gallery_imageset :galleria, photo`

The photo argument must be a kind of `RGallery::Photo::

Some HAML views (partials) are included in app/views/gallery

First set up photos in your controller.

class PropertiesController < ApplicationController
  def show
    @property = property
  end

  protected

  def property
    Hashie::Mash.new  title: 'A beautiful property', 
                      description: decription,
                      photos: photos
  end

  def description
    %q{Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent mauris arcu, auctor ac rhoncus non,  libero. Nulla dolor velit, volutpat a bibendum ut, hendrerit id mi. Pellentesque convallis erat in mi interdum rutrum. Phasellus interdum velit nulla.
    }
  end  

  def photos
    @photos ||= RGallery::Photos.new nil, photo_class: Property::Photo
    5.times do |n|
      # using a paginator to get a page of properties
      @photos.pages << Property.page(n)
    end
    @photos
  end
end

In property/show.html.haml, render one of the partials of this gem, sending it the list of photos as a local variable photo:

.gallery
  = render partial: 'gallery/gallery', locals: { photos: @property.photos}

Responsive Gallery

In your properties/show.html.haml:

= render partial: 'gallery/template/responsive'
= render partial: 'gallery/responsive', locals: { photos: @property.photos }

Note :Currently only the responsive gallery uses a template, and thus requires rendering an extra partial.

Slideshow Gallery

= render partial: 'gallery/slideshow', locals: { photos: @property.photos }

Galleria

= render partial: 'gallery/galleria', locals: { photos: @property.photos }

All galleries should follow this convention (or as close as possible)

Note that all gallery labels are rendered using Rails I18n I18n.t. You should include appropriate translations for the following keys under 'rgallery':

• previous
• next
• photos_loading

The engine includes a config/locales/rails_gallery.yml file, currently only with english translation mappings. Include a config/locales/rails_gallery.yml file in your Rails app and override or supply you additional translation mappings ;)

There are some view helpers included in rails-gallery/view_helper.rb

= gallery_image type, photo

Simple example:

Iterate all photos as a "single page".

- photos.all.each do |photo|
  = gallery_image :responsive, photo`

Pages example:

Iterate photos, one page at a time.

- photos.pages.each do |photo|
  = gallery_image :responsive, photo`

Advanced example:

Iterate photos, first page visible, then remaining pages invisible.

.page.visible
  - photos.page(:first).photos.each do |photo|
    = gallery_image :responsive, photo`

- photos.pages.remainder.each do |page|
  .page.hidden
    - page.photos.each do |photo|
      = gallery_image :responsive, photo`

The RGallery also supports multiple photo sources for responsive galleries:

@photos.pages.add_photo_w_sources 'banner' => [{src: 'banner-HD', sizing: '2x'}, {src: 'banner-phone', sizing: '100w'}]

Note: See module `RGallery::Pages` class.

# OR

@photos.pages.add_photo_sources 'banner' => [{src: 'banner-HD', sizing: '2x'}], 'logo' => [{src: 'logo-HD', sizing: '2x'}

# OR on individual pages

@photos.page(:first).add_photo_sources 'banner' => [{src: 'banner-HD', sizing: '2x'}], 'logo' => [{src: 'logo-HD', sizing: '2x'}

# galleria
= riagal_image photo
= riagal_imageset photo

# slideshow
= slidegal_image photo
= slidegal_imageset photo

# responsive
= respgal_image photo
= respgal_imageset photo

# touchtouch
= touchgal_image photo
= touchgal_imageset photo

The View Helpers includes tag helpers to create image tags with srcset. This can be installed and used with picturefill-rails

Example:

- photos.pages.each do |photo|
  = gallery_imageset :responsive, photo`

Enjoy!

Simply follow the existing conventions (see the code).

ViewHelpers

Add the gallery name to the #galleries class method of the ViewHelper and create a module for that gallery with a [name]_gallery_image(photo) method.

Then add gallery client-side pieces to the assets folder following conventions and make sure that your css files (and possible js files) references the icons used (and any other asset) correctly using /assets/ in the path ;)

Would be nice to allow pages/albums to have info assigned, such as title and/or description, tags etc.

See building gem with bundler

Update VERSION referenced from .gemspec file in lib/rails-gallery/version.rb

Build the new version of the gem:

$ gem build rails-gallery.gemspec

Generate rspec:

gem spec rails-gallery-0.3.3.gem

Push (publish) to rubygems:

gem push rails-gallery-0.3.3.gem

• Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
• Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
• Fork the project.
• Start a feature/bugfix branch.
• Commit and push until you are happy with your contribution.
• Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
• Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

Copyright (c) 2012 Kristian Mandrup. See LICENSE.txt for further details.