Module: BootstrapRefile::AttachmentHelper

Defined in:
lib/bootstrap_refile/rails/attachment_helper.rb

Overview

Rails view helpers which aid in using Refile from views.

Defined Under Namespace

Modules: FormBuilder

Instance Method Summary collapse

Instance Method Details

#bootstrap_attachment_field(object_name, method, object:, **options) ⇒ ActiveSupport::SafeBuffer

Generates a form field which can be used with records which have attachments. This will generate both a file field as well as a hidden field which tracks the id of the file in the cache before it is permanently stored.

Parameters:

  • object_name —

    The name of the object to generate a field for

  • method —

    The name of the field

  • options (Hash)

Options Hash (**options):

  • object (Object) —

    Set by the form builder, currently required for direct/presigned uploads to work.

  • direct (Boolean) —

    If set to true, adds the appropriate data attributes for direct uploads with refile.js.

  • presign (Boolean) —

    If set to true, adds the appropriate data attributes for presigned uploads with refile.js.

Returns:

  • (ActiveSupport::SafeBuffer) —

    The generated form field



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# File 'lib/bootstrap_refile/rails/attachment_helper.rb', line 25

def bootstrap_attachment_field(object_name, method, object:, **options)
  file_icons = {
    'default' => 'fa-file-o',
    'pdf' => 'fa-file-pdf-o',
    'xls' => 'fa-file-excel-o',
    'xlsx' => 'fa-file-excel-o',
    'csv' => 'fa-file-excel-o',
    'doc' => 'fa-file-word-o',
    'docx' => 'fa-file-word-o',
    'jpg' => 'fa-file-image-o',
    'jpeg' => 'fa-file-image-o',
    'png' => 'fa-file-image-o',
    'gif' => 'fa-file-image-o'
  }

  options[:remove_class] ||= 'btn-primary'
  options[:select_class] ||= 'btn-primary'
  options[:progress_class] ||= ''

  options[:data] ||= {}

  attachment_name = method.to_s.humanize

  file_exists = (!object["#{method}_id"].nil?)
  file_extension = (file_exists)? File.extname(object["#{method}_filename"].to_s).gsub(/\./, '') : ''
  file_name = (file_exists && !object["#{method}_filename"].to_s.blank?)? object["#{method}_filename"].to_s : 'No file selected'

  image_url = (file_exists)? attachment_url(object, method.to_sym, :fit, 300, 300) : "http://placehold.it/300x200&text=#{attachment_name}"
  image_tag = image_tag(image_url, class: 'preview img-responsive')

  remove_attachment = check_box(object_name, "remove_#{method}".to_sym, { class: 'btn btn-primary' })
  attacher = object.send(:"#{method}_attacher")
  options[:accept] = attacher.accept

  if options[:direct]
    host = options[:host] || Refile.host || request.base_url
    backend_name = Refile.backends.key(attacher.cache)

    url = ::File.join(host, main_app.refile_app_path, backend_name)
    options[:data].merge!(direct: true, as: "file", url: url)
  end

  if options[:presigned] and attacher.cache.respond_to?(:presign)
    options[:data].merge!(direct: true).merge!(attacher.cache.presign.as_json)
  end

  attachment_field = hidden_field(object_name, method, value: attacher.data.to_json, object: object, id: nil)
  attachment_field += file_field(object_name, method, options)

  attachment_icon = (file_exists && file_icons[file_extension])? file_icons[file_extension] : file_icons['default']

  result = <<-EOD
  <div class="refile-upload #{(file_exists)? 'filled' : ''} #{(!file_extension.blank?)? "filled-type-#{file_extension}" : ''}">
    <h4>#{attachment_name}</h4>
    <div class="row">
      <div class="col-sm-5">
        <span class="thumbnail">#{image_tag}</span>
      </div>
      <div class="col-sm-7">
        <div class="progress">
          <div class="progress-bar #{options[:progress_class]}" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100">
            <span class="sr-only">0% Complete</span>
          </div>
        </div>
        <div class="file-info"><i class="fa #{attachment_icon}"></i> #{file_name}</div>
        <label style="display: block; padding-bottom: 10px;">
          #{remove_attachment}
          Remove #{attachment_name}
        </label>
        <span class="btn #{options[:select_class]} btn-file">
          Select #{attachment_name}
          #{attachment_field}
        </span>
      </div>
    </div>
  </div>
EOD
  return result.html_safe
end