在Ruby on Rails中使用gem似乎不起作用

Question

I have installed the gem ruby-imagespec

The code looks like the following:

class TestController < ApplicationController
  def ratio(fid)
    file = File.new("#{Rails.public_path}/test/#{fid}.swf", "rb")
    dimensions = ImageSpec.new(file)
    return dimensions
  end
  helper_method :ratio
end

When I try to run this I get an error:

"uninitialized constant TestController::ImageSpec" on line 7 The gem is listed in the gemfile and explicitly requiring it does not work.

Where is the error? The gem is installed correctly and this code is just like the code from the gem's README

Answer 1

ruby-imagespec is an unsupported gem, please try fastimage:

add gem 'fastimage' in your Gemfile

here the documentation https://github.com/sdsykes/fastimage

Answer 2

Looking at the ruby-imagespec repository , the file you need to require appears to be lib/image_spec.rb. Try require 'image_spec' .