dcarper / rqrcode_png Goto Github PK

Hi!
I wanted to know if it is possible to set the location where I want the image to be placed.

How would I serve up the generated PNG file from a Rails view?

This works using the HTML table method described in rqrcode, but I'd rather use your PNG version:

require 'rqrcode'

class UsersController < ApplicationController
  before_filter :authenticate_user!

  def show
    @user = User.find(params[:id])
    @qr = RQRCode::QRCode.new('http://www.google.com/')
  end

end

<style type="text/css">
 table {
  border-width: 0;
  border-style: none;
  border-color: #0000ff;
  border-collapse: collapse;
 }
 td {
   border-width: 0;
   border-style: none;
   border-color: #0000ff;
   border-collapse: collapse;
   padding: 0;
   margin: 0;
   width: 10px;
   height: 10px;
 }
 td.black { background-color: #000; }
 td.white { background-color: #fff; }
</style>

<table>
 <% @qr.modules.each_index do |x| -%>
   <tr>
   <% @qr.modules.each_index do |y| -%>
    <% if @qr.dark?(x,y) -%>
    <td class="black"/>
    <% else -%>
    <td class="white"/>
    <% end -%>
   <% end -%>
   </tr>
 <% end -%>
</table>

When I try to get the image like so
QRCode::QRCode.new(@card.secret, :size => 6).to_img.resize(451, 451)
I get image with 37x37px border. Is there any way to get image without border?

No longer have access to the email I originally registered the gem with.

Creating this issue to verify ownership with RubyGems support

What's the difference in the png with different :size and :level ?

No activity for more than 3 years, is this gem still active?

Hi,

I try to run the following code as per instruction;

qr = RQRCode::QRCode.new( url, :size => 5, :level => :h )
png = qr.to_img

and when it executes the to_img method, I get the following exception:

Coordinates (37,2) out of bounds!

Any ideas? Thanks

Paul

RubyGems.org doesn't report a license for your gem. This is because it is not specified in the gemspec of your last release.

via e.g.

spec.license = 'MIT'
# or
spec.licenses = ['MIT', 'GPL-2']

Including a license in your gemspec is an easy way for rubygems.org and other tools to check how your gem is licensed. As you can imagine, scanning your repository for a LICENSE file or parsing the README, and then attempting to identify the license or licenses is much more difficult and more error prone. So, even for projects that already specify a license, including a license in your gemspec is a good practice. See, for example, how rubygems.org uses the gemspec to display the rails gem license.

There is even a License Finder gem to help companies/individuals ensure all gems they use meet their licensing needs. This tool depends on license information being available in the gemspec. This is an important enough issue that even Bundler now generates gems with a default 'MIT' license.

I hope you'll consider specifying a license in your gemspec. If not, please just close the issue with a nice message. In either case, I'll follow up. Thanks for your time!

Appendix:

If you need help choosing a license (sorry, I haven't checked your readme or looked for a license file), GitHub has created a license picker tool. Code without a license specified defaults to 'All rights reserved'-- denying others all rights to use of the code.
Here's a list of the license names I've found and their frequencies

p.s. In case you're wondering how I found you and why I made this issue, it's because I'm collecting stats on gems (I was originally looking for download data) and decided to collect license metadata,too, and make issues for gemspecs not specifying a license as a public service :). See the previous link or my blog post about this project for more information.

i'm trying to generate a qr code in my rails app. I'm getting an error:

invalid byte sequence in UTF-8

here is my code in my controller:

@qR2 = RQRCode::QRCode.new( url, :size => 4, :level => :h ).to_img.to_s

and in my view:

<%= @qR2 %>

Thanks

I'm having an invalid encoding error that doesn't let me save the image to a carrierwave uploader.

img = RQRCode::QRCode.new( 'test', :size => 4, :level => :h ).to_img.to_s

img.valid_encoding?
=> false

I get the following error:
undefined method dark?' for #RQRCode::QRCode:0x00007ff80f249078`

When I do this:
<%= image_tag RQRCode::QRCode.new(organization.uuid.to_s).to_img.to_data_url %>

Hi,

Is it possible with the gem to add the logo to the QR generated? I have to do it manually with rmagick?