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Sir Trevor Image Uploader (Rails + Carrierwave)
# config/initializers/carrierwave.rb
require 'carrierwave/processing/mime_types'
require 'securerandom'
CarrierWave.configure do |config|
if Rails.env.test?
config.enable_processing = false
elsif !Rails.env.development?
config.storage = :fog
config.fog_credentials = {
:provider => 'AWS',
:aws_access_key_id => ENV['S3_KEY'],
:aws_secret_access_key => ENV['S3_SECRET'],
:region => 'eu-west-1'
}
config.fog_directory = ENV['S3_BUCKET']
config.fog_public = true
end
end
class CarrierWave::Uploader::Base
include CarrierWave::MiniMagick
include CarrierWave::MimeTypes
process :set_content_type
process :optimize
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}".tap do |s|
s.prepend "test_" if Rails.env.test?
end
end
def filename
return unless original_filename
@random_filename ||= [model ? model_random_id : random_id,
file.extension].join('.')
end
def optimize
manipulate! do |img|
return img unless img.mime_type.match /jpe?g/
img.strip
img.combine_options do |c|
c.quality "80"
c.depth "8"
c.interlace "plane"
end
img
end
end
private
def model_random_id
var = :"@#{mounted_as}_random_id"
model.instance_variable_get(var) || model.instance_variable_set(var, random_id)
end
def random_id
SecureRandom.urlsafe_base64(32)
end
end
# Upload gems
gem "carrierwave"
gem "mini_magick", "~> 3.3"
gem "fog", "~> 1.3.1"
class ImagesController < AdminController
def create
uploader = SirTrevorImageUploader.new
if uploader.store! params[:attachment][:file]
render json: uploader.as_json, status: 200
else
render :json => uploader.errors, status: 500
end
end
end
# ... All your other routes
# This enables POST to /images
resources :images, only: [:create]
// Set the image upload path
SirTrevor.setDefaults({
uploadUrl: "/images"
});
class SirTrevorImageUploader < CarrierWave::Uploader::Base
def store_dir
"uploads/editor".tap do |s|
s.prepend "test_" if Rails.env.test?
end
end
# Provide a default URL as a default if there hasn't been a file uploaded:
def default_url
# For Rails 3.1+ asset pipeline compatibility:
"/assets/" + [version_name, "default.gif"].compact.join('_')
end
version :large do
process resize_to_limit: [850, nil]
end
version :medium do
process resize_to_limit: [640, nil]
end
version :small do
process resize_to_limit: [320, nil]
end
def extension_white_list
%w(jpg jpeg gif png)
end
def as_json(options = nil)
{
file: super["uploader"]
}
end
end

The image uploader dosent seem to work in my rails app
. It says there was a problem uploading this image

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