NameError - uninitialized constant Zip

Question

I am trying to unzip a file in my Spree plugin.

Defined the unzipping method in a module which looks like this.

module ImportImages
  class Zipper
    def self.unzip(zip, unzip_dir, remove_after = false)
      Zip::File.open(zip) do |zip_file|
        zip_file.each do |f|
          f_path=File.join(unzip_dir, f.name)
          FileUtils.mkdir_p(File.dirname(f_path))
          zip_file.extract(f, f_path) unless File.exist?(f_path)
        end
      end
      FileUtils.rm(zip) if remove_after
    end
  end
end

I have included the rubyzip gem in my Gemfile.

gem 'rubyzip'
gem 'zip-zip'

When trying to run it, I am getting the following error.

NameError - uninitialized constant ImportImages::Zipper::Zip:

I have tried every solution provided in stackoverflow and other sites. I tried downgrading the version of rubyzip which is 1.2.0 now and add require 'zip' or require 'zip/zip'. Both returned load error.

I have try adding require 'zip/filesystem' to the class. But got

LoadError - cannot load such file -- zip/zipfilesystem

Any solution for this?

Still getting the same error. If trying to add require, I am getting `cannot load such file -- zip/zipfilesystem` — Aswathy, Mar 29 '16 at 07:16
https://github.com/rubyzip/rubyzip#important-note did you read this — Rajarshi Das, Mar 29 '16 at 07:19
just do require 'rubygems' require 'zip' not require any more — Rajarshi Das, Mar 29 '16 at 07:20
Yeah. I am not doing like that. Some solutions I found downgraded rubyzip and added these lines. Was trying that. — Aswathy, Mar 29 '16 at 07:40

score 6 · Answer 1 · answered Dec 13 '17 at 10:14

6

Include rubyzip in gem file in this way:

gem 'rubyzip', require: 'zip'

See this question

answered Dec 13 '17 at 10:14

Montells

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score 4 · Accepted Answer · answered Mar 29 '16 at 07:28

4

It's looking for a nested Constant. Change line Zip::File.open(zip) do |zip_file| with below:

::Zip::File.open(zip) do |zip_file|

It should work. Also make sure you require rubygem/bundle setup. Though in spree it should've already been done.

answered Mar 29 '16 at 07:28

Babar Al-Amin

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3

Now I am getting `NameError - uninitialized constant Zip` – Aswathy Mar 29 '16 at 07:37
@Aswathy: Make sure that in your Gemfile, the require is present. `gem "rubyzip", require: "zip"`. – Adeynack Aug 09 '22 at 21:12

score 3 · Answer 3 · answered Nov 27 '16 at 12:49

3

Babar's answer is correct, but you also need to add require 'zip' in application_controller.rb

answered Nov 27 '16 at 12:49

Patryk

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add require 'zip' similar to @montelis answer. – Robert Jul 10 '18 at 12:25

NameError - uninitialized constant Zip

3 Answers3