Carrierwave support for rails_admin

_form_carrier_wave_file.html.haml

= label_tag "#{field.abstract_model.to_param}_#{field.name}", field.label
.input
  - if field.bindings[:object].send("#{field.name}_url")
    .row
      = link_to field.bindings[:object].send("#{field.name}_url")
      %br
      = form.check_box "remove_#{field.name}"
      = form.label "remove_#{field.name}", "Remove existing #{field.label.downcase}", class: "inline"
  .row
    = form.file_field field.name, class: "fileUploadField #{field.has_errors? ? "errorField" : nil}"
    - if field.has_errors?
      %span.errorMessage(style="margin-left:3px") #{field.label } #{field.errors.first}
    = form.hidden_field "#{field.name}_cache"

_form_carrier_wave_image.html.haml

= label_tag "#{field.abstract_model.to_param}_#{field.name}", field.label
.input{ style: "padding-left:100px; padding-top:15px; padding-bottom:15px" }
  - image = field.bindings[:object].send(field.name)
  - if image.path # the most direct check of an assets existence I could see
    .row
      -# load a default 'version' if it exists. should really be set through rails_admin's DSL:
      - default_version = image.versions[:main]
      = image_tag default_version && default_version.url || image.url
      %br
      = form.check_box "remove_#{field.name}"
      = form.label "remove_#{field.name}", "Remove existing #{field.label.downcase}", class: "inline"
  .row
    = form.file_field field.name, class: "fileUploadField #{field.has_errors? ? "errorField" : nil}"
    - if field.has_errors?
      %span.errorMessage(style="margin-left:3px") #{field.label } #{field.errors.first}
    = form.hidden_field "#{field.name}_cache"

rails_admin.rb

# Register a custom field factory and field type for CarrierWave if its defined
if defined?(::CarrierWave)
  module RailsAdmin::Config::Fields::Types
    # Field type that supports CarrierWave file uploads
    class CarrierWaveFile < RailsAdmin::Config::Fields::Types::FileUpload
      register_instance_option(:partial) do
        :form_carrier_wave_file
      end
      
      register_instance_option(:formatted_value) do
        # get the value stored in the db e.g. "smiley.png" instead of the files entire path
        # note we need to call `name.to_s` because attributes takes a string and name returns a symbol.
        bindings[:object].attributes[name.to_s]
      end
    end
    
    # Field type that supports CarrierWave file uploads with image preview
    class CarrierWaveImage < CarrierWaveFile
      register_instance_option(:partial) do
        :form_carrier_wave_image
      end
    end
    
    # Register field type to the types registry
    register(:carrier_wave_file, CarrierWaveFile)
    register(:carrier_wave_image, CarrierWaveImage)
  end
  RailsAdmin::Config::Fields.register_factory do |parent, properties, fields|
    model = parent.abstract_model.model
    if model.kind_of?(CarrierWave::Mount) && model.uploaders.include?(properties[:name])
      type = properties[:name] =~ /image|picture|thumb/ ? :carrier_wave_image : :carrier_wave_file
      fields << RailsAdmin::Config::Fields::Types.load(type).new(parent, properties[:name], properties)
      true
    else
      false
    end
  end
end

Any temporary solutions to the newest commit of rails admin?