No method error on Heroku.

[george-carlin]

Hi,

I made a simple Sinatra app that uses this Gem. It runs fine on localhost, but when I deploy to Heroku I get the error NoMethodError - undefined method 'write_buffer' for Zip::ZipOutputStream:Class: which is being raised by the line /app/vendor/bundle/ruby/2.0.0/gems/passbook-0.2.1/lib/passbook/pkpass.rb:122:in outputZip.

Any idea what the cause of this could be?

I posted on StackOverflow with the same problem, more detailed description here

[lgleasain]

This could be one of two things. #1, there is a rubyzip update pull request that I haven't had time to look at that could be the culprit. #2 something else.

Most apps that I have written for this have targeted Heroku, but something may have changed and we hadn't gone to 2.0 at the time. Can you share some of the relative snippets in your app too? This is the first issue we have had in a while....but I will look at it today.

[george-carlin]

Here's the method that causes the problem. (Just trying to serve a pkpass file from a static url, like I said it's only a barebones app at the moment.)

 get "/v1/passes/#{PASS_TYPE_IDENTIFIER}/12345" do
   pass = File.read File.join("files", "pass.json")
   passbook = Passbook::PKPass.new pass
   passbook.addFiles [
     "files/logo.png", "files/logo@2x.png", "files/icon.png",
     "files/icon@2x.png", "files/strip.png", "files/strip@2x.png"]
   response['Content-Type'] = 'application/vnd.apple.pkpass'
   attachment 'mypass.pkpass'
   passbook.stream.string
 end

at the top I'm requiring a file which contains:

Passbook.configure do |passbook|
  passbook.wwdc_cert = File.join "certs", "WWDR.pem"
  passbook.p12_key   = File.join "certs", "passkey.pem"
  passbook.p12_certificate = File.join "certs", "passcertificate.pem"
  passbook.p12_password = (password)
end

[lgleasain]

I think this might be related to the changes with RubyZip. Can I see your Gemfile.lock ?

[george-carlin]

    GEM
      remote: https://rubygems.org/
      specs:
        active_support (3.0.0)
          activesupport (= 3.0.0)
        activesupport (3.0.0)
        grocer (0.4.1)
        passbook (0.2.1)
          grocer
          rubyzip
        rack (1.5.2)
        rack-protection (1.5.1)
          rack
        rubyzip (1.0.0)
        sinatra (1.4.4)
          rack (~> 1.4)
          rack-protection (~> 1.4)
          tilt (~> 1.3, >= 1.3.4)
        tilt (1.4.1)
        zip (2.0.2)

    PLATFORMS
      ruby

    DEPENDENCIES
      active_support
      passbook
      rubyzip
      sinatra
      zip

[lgleasain]

It looks like your issue is related to Rubyzip. Try updating your passbook gem to the latest one and let me know if you have any problems.