cortiz / prawn-rails

Prawn Handler for Rails. Handles and registers pdf formats.

Prawn-Rails

Install

gem 'prawn-rails'

Note: prawn and prawn-table are dependencies of prawn-rails so there is no need to mention it in the projects Gemfile unless you want to use a specific version of either of those libraries.

Usage

Create a view with pdf as format and prawn as handler so filename should look like example.pdf.prawn.

It provides a helper called prawn_document which builds a PrawnRails::Document with default options. You can override any options as you please. Example:

prawn_document do |pdf|
  pdf.text "Hello World"
end

No need to call pdf.render, it is called by prawn_document.

You can customize the name of the generated PDF and the file's delivery format with the :filename and :disposition keys:

prawn_document(filename: "my-file.pdf", disposition: "attachment") do |pdf|
  pdf.text "Direct download incoming!"
end

You can also override the content disposition using the Content-Disposition HTTP header. If you've already set this, prawn-rails will not override it. Here's an example of setting the header directly:

def download
  respond_to do |format|
    format.pdf do
      headers["Content-Disposition"] = "attachment; filename=\"charts-#{Time.now.to_i}.pdf\""
    end
  end
end

You can also override the file's name from the controller via @filename:

def show
  @filename = "my_report.pdf"
end

If no options are given, the file's name will match to your browser's default and the delivery format will default to inline.

Default configuration

Add a prawn-rails.rb config to your Rails app under config/initializers like this:

PrawnRails.config do |config|
  config.page_layout = :portrait
  config.page_size   = "A4"
  config.skip_page_creation = false
end

Please note that these are the defaults.

For a list of all available options: http://www.rubydoc.info/gems/prawn/Prawn%2FDocument:initialize.

For a list of all metadata the the :info option supports, please see https://github.com/prawnpdf/prawn/blob/master/manual/document_and_page_options/metadata.rb.

If skip_page_creation is set to true then you have to create the first page yourself. Example:

pdf.start_new_page
# OR
pdf.start_new_page size: "A4", page_layout: :portrait

Examples

Hello World

# hello.pdf.prawn

prawn_document do |pdf|
  pdf.text 'Hello World!'
end

Using Active Record

# myproducts.pdf.prawn

prawn_document do |pdf|
  pdf.text 'Current Products are:'
  pdf.move_down 20
  pdf.table @products.collect{|p| [p.name,p.price]}
end

Using Custom options

# landscape.pdf.prawn

prawn_document(page_layout: :landscape) do |pdf|
  pdf.text 'Landscape Page!'
end

Without using the prawn_document helper

doc = PrawnRails::Document.new(page_layout: :landscape)

doc.text "Page 1"
doc.start_new_page
doc.text "Page 2"

pdf_str = doc.render

Credits

Maintained by Weston Ganger - @westonganger

Created by Carlos Ortiz - @cortiz

prawn-rails's Issues

Is there any way to load pie chart using chartkiq in PDF

I want to load a pie chart in pdf file.
so is there any way to load pie chart in pdf using 'prawn-rails' gem?

Rendering of large PDF file: flush possible?

Hello!

I have a project that renders pretty big PDF files. In one instance the PDF file is more than 600 pages with 4 images on almost every page. This eventually leads to a NoMemoryError by ruby cause the PDF is held entirely in memory... Is there any way to flush the memory to the file during the creation process? I am tinking something along the lines of "create 100 pages - flush - next 100 - flush - ..."

Thanks for taking the time and for this awesome library!

Can't implement config in initializer

Hi, I followed your instructions for setting config in /initializers/prawn-rails.rb, but I keep getting the error unidentified method `config' for PrawnRails::Module. I guess my other option is to revert to Issue #3's commit and hard code landscape into the instantiation, but I sure like the idea of the config better. Any advice on making this work?

Please use semantic versioning

Hi,

your latest update from 0.1.0 to 0.1.1 contained a breaking change.
Please don't do that and please adhere to semantic versioning (http://semver.org/).

landscape page layout

Is there any way to currently create one of these? I don't see a way to pass options to the pdf render... any help would be appreciated. Thanks

ActionController::UnknownFormat

Installed Gem and created pdf.prawn view. When I am accessing url with .pdf. Its giving me ActionController::UnknownFormat Do I need to register the Mime type again ?

Add an option to control Content-Disposition

It looks like there's a way to control the filename (by setting @filename), but the Content-Disposition is hard-coded to be "inline":

          controller.response.headers['Content-Disposition'] = "inline; filename=\\\"\#{@filename}\\\""

Could we add an option for controlling whether Content-Disposition is inline or attachment like prawnto has?

      def set_disposition
        inline = options[:inline] ? 'inline' : 'attachment'
        filename = options[:filename] ? "filename=\"#{options[:filename]}\"" : nil
        @controller.headers["Content-Disposition"] = [inline,filename].compact.join(';')
      end

Maybe we need an options hash?

Rails 6: DEPRECATION WARNING: Single arity template handlers are deprecated.

DEPRECATION WARNING: Single arity template handlers are deprecated. Template handlers must
now accept two parameters, the view object and the source for the view object.
Change:

Class#call(template)
To:
Class#call(template, source)
(called from class:Engine at C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/prawn-rails-1.2.0/lib/prawn-rails/engine.rb:8)

prawn_document helper required

Can you update the docs letting folks know that they need to use the new helper otherwise they'll get errors?

Using with prawn-icon

Hey, first thanks for the great gem!
I recently tried to use the prawn-icon gem to include Font Awesome icons in my PDF document.

The issue is the following: I need the icons for my table, so I'm using the table_icon helper:

prawn_document(page_layout: :landscape, page_size: "A6", filename: "Bestellungen_#{I18n.l(Date.today)}") do |pdf|
    # pdf.font_families.update(
    #     "Font Awesome" => { :normal => Rails.root.join("app", "assets", "fonts", "fa-solid-900.ttf") }
    # )

    @orders.each do |order|
        data = [ 
            ["Salat", "Suppe", "Dessert"],
            [pdf.table_icon('fas-birthday-cake')]
        ]
        pdf.font("Helvetica", size: 20, style: :bold) do 
            pdf.float { pdf.text(order.user.name, align: :left) }
            pdf.text(l(order.day), align: :right)
        end
        pdf.move_down 10
        pdf.table(data)
    end
end

Without changing the font for the whole document to Font Awesome with pdf.font "Font Awesome", I keep getting the following error:

Your document includes text that's not compatible with the Windows-1252 character set.
If you need full UTF-8 support, use external fonts instead of PDF's built-in fonts.

But unfortunately it neither works when I just change the cell font type like this:

  cell_1 = pdf.make_cell(pdf.table_icon('fas-birthday-cake'))
  cell_1.font = "Font Awesome"

Is there anything I can do to use the gem with prawn-rails? Or might it be a problem with prawn-table?

Prawn::Emoji Support?

I was attempting to integrate prawn-emoji support into my app so we can display emojis inside the PDFs, but it doesn't seem possible to use this with the prawn-rails configuration. Is there any way this can be changed so these integrate automatically?

Bootstrap css import

Hello,
I have set all div and its classes, which i can show in html, i use "gem 'prawn-styled-text'" this gem for styled_text, but the output is not as expected.
So do i need to import CSS ?
if yes, then where and how can i import those CSS.
Thanks and Regards.

Possible missing step or error in README?

From this StackOverflow question, I've followed the instructions in the README (unless I missed something small) but I have an undefined local variable or method 'pdf' for #<#<Class:0x005618ff5021e8>:0x005618ff97b968> in the prawn file, written as in the example.

Feel free to check out my current source here with the relevant commit here.

Thanks!

Release a new version on Rubygems

#41 should be relased on Rubygems

undefined method `headers' for nil after upgrading to v1.0.0

I'm using prawn to render a pdf to string:

ApplicationController.new.render_to_string("/template.pdf", locals: { model: self })

template.pdf.prawn

require 'stringio'

@model = model if defined?(:model)

prawn_document(:page_layout => :portrait) do |pdf|
  ...
end

This works perfectly with prawn-rails v0.1.1.

After upgrading to v1.0.0 I get the following error:
ActionView::Template::Error: undefined method 'headers' for nil:NilClass

The error supposedly occurs on line 3 of the above template. However If I remove the line the error still happens on line 3. Also If I add a byebug to the top of the template file the breakpoint is never reached as the error happens before.

Appreciate any advice on this, cheers!

Update: looks like this change could be the culprit
https://github.com/cortiz/prawn-rails/pull/16/files

Have you ever been able to make it run on Heroku?

Hello Carlos. First of all, let me apologize, for I know this is not the place to ask this. But I haven't been able to find your email or a private way to contact you.

I have used this gem successfully in a Rails 4 app, locally. When deploying to Heroku, the PDF can't be accessed and the app throws an error. I might be doing something wrong, I know, so I'd just like to know if you have successfully ran this gem on Heroku.

(Note: I can correctly show PDFs if I just use the Prawn gem, without prawn-rails)

PrawnRails initializer doesn't get loaded

I recently moved to this gem instead of separately using prawn and prawn-table. The initializer, I thought, would be handy.

In each of my PDF's I would call something like:

 super(top_margin: 30, right_margin: 50, page_size: 'LETTER', page_layout: :portrait)

I removed that content from each file and placed those setting in an initializer---as recommended in your readme.

PrawnRails.config do |config|
config.page_layout = :portrait
config.page_size = 'LETTER'
config.skip_page_creation = false
config.top_margin = 30
config.left_margin = 50
config.compress = true

config.info = {
Title: 'xxxxx PDF',
Author: 'xxxxxxx',
Subject: 'xxxxx PDF',
Keywords: 'xxxxxx',
Creator: 'xxxxx',
Producer: 'Prawn',
CreationDate: Time.now
}
end

If I load the PDF using super to set the options, the page is created as expected. If I remove super, and and expect the options to be set in the initializer, the PDF fails to load. The first error is "undefined method `page' for nil:NilClass". It seems the document doesn't understand the page structure without using super to define the options.

Load a custom ttf font

Hi @westonganger,

Is it possible to load a custom TTF font in rails initializer ?

I mean that prawn use AFM font type by default and I want to use TTF one (for utf-8 support).

I have access to ttf file, I load them when generating document

pdf.font_families.update("Helvetica": {
    normal: Rails.root.join("app/assets/fonts/Helvetica.ttf"),
    italic: Rails.root.join("app/assets/fonts/Helvetica-Oblique.ttf"),
    bold: Rails.root.join("app/assets/fonts/app/assets/fonts/Helvetica-Bold.ttf"),
    bold_italic: Rails.root.join("app/assets/fonts/Helvetica-BoldOblique.ttf")
    })

Regards,

tests failing with uninitialized constant PDF::Reader

getting a failure

 1) Error:
PdfControllerTest#test_should_get_a_pdf:
NameError: uninitialized constant PDF::Reader
    test/functional/pdf_controller_test.rb:7:in `block in <class:PdfControllerTest>'

assuming it is because, https://github.com/yob/pdf-reader
is needed in tests

also getting an error for html_strip

  1) Error:
PdfControllerTest#test_should_get_a_pdf:
ActionView::Template::Error: undefined method `html_strip' for #<PrawnRails::Document:0x007fddb889a5b0>
    app/views/pdf/render_pdf.pdf.prawn:9:in `_app_views_pdf_render_pdf_pdf_prawn___4319188849794565216_70295138594160'

Render a .pdf.prawn view into a file

Hey!

Big fan of this project. It works flawlessly and allows us to put the code that composes a PDF in the views folder which is where I've always believed something like that belongs.

I have a pdf working as a view exactly like the main page's example with prawn_document and everything. The controller responds to the .pdf format and renders it, all is good and well.

However, I would like to send the generated PDF as an e-mail attachment and to do that I need to have the PDF rendered as if it was a file in my controller. Is there any way to do render a .pdf.prawn view into a file like that?

Let's say I wanted to render a pdf view into a file and save it in the disk, for example. Is that possible in the current state of the gem? I know that using raw prawn that's not hard to do, but with the PDF code inside a view I can't seem to find a way. I couldn't find anything on that topic anywhere.

Thank you in advance!

Rails 6: Deprecation Warning: Single arity template handlers are deprecated.

When running rails, on Rails 6.0.0rc1, I get the following output.

DEPRECATION WARNING: Single arity template handlers are deprecated. Template handlers must now accept two parameters, the view object and the source for the view object.
Change:

PrawnRails::Renderer.call(template)
To:
PrawnRails::Renderer.call(template, source)

I thought this might be related to: #37

However, I added the latest version of Temple (even though I had no reference to it in my app), and am still receiving the deprecation warning. It looks like an issue from PrawnRails itself, based on the issue above.

I believe this file is the culprit: https://github.com/cortiz/prawn-rails/blob/master/lib/prawn-rails/renderer.rb

When I forked this repo, and changed line 7 of Renderer.rb and modified

def self.call(template)

to
def self.call(template, source)

I was no longer receiving the Deprecation Warning.

Couldn't change the filename using @filename

Hi i have some issue with prawn-rails when i want to change my filename when prawn generate my pdf..
so i have routes

def pdf
  @file_name = "example.pdf"
end

and i have pdf.pdf.prawn but when it generate my pdf file name stay the same
http://localhost:3000/templates/pdf.pdf

am i do anything wrong here

Undefined Method

I am getting an error

 NoMethodError - undefined method `merge' for nil:NilClass:
  prawn-rails (0.1.1) lib/prawn-rails/document.rb:10:in `initialize'
  prawn-rails (0.1.1) lib/prawn-rails/rails_helper.rb:11:in `new'
  prawn-rails (0.1.1) lib/prawn-rails/rails_helper.rb:11:in `prawn_document'`

I looked at document.rb and it seems that PrawnConfig is nil. I have the initializer setup, and that appears to be working ok.

My document is: invoice.pdf.prawn and has the contents of

prawn_document do |pdf|
  pdf.text "Hello World!"
end

my prawn-rails.rb file contains:

PrawnRails.config do |config|
  config.page_layout = :portrait
  config.page_sie = "A4"
  config.skip_page_creation = false
end

and after running bundle update I see

Using prawn 1.3.0
Using prawn-table 0.2.1
Using prawn-rails 0.1.1

Issue running on Ruby 3.1 or 3.2 because official prawn gem hasnt released a new version.

Hi there! I'm running into issues deploying an app to Heroku with this gem. These are the logs which look like the error is coming from prawn-rails. Any ideas on what could be going on? Thanks!

-----> Building on the Heroku-20 stack
-----> Using buildpacks:
       1. heroku-community/apt
       2. heroku/ruby
       3. https://github.com/brandoncc/heroku-buildpack-vips
-----> Apt app detected
-----> Reusing cache
-----> Updating apt caches
       Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
       Get:2 http://archive.ubuntu.com/ubuntu focal-security InRelease [114 kB]
       Hit:3 http://apt.postgresql.org/pub/repos/apt focal-pgdg InRelease
       Get:4 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
       Get:5 http://archive.ubuntu.com/ubuntu focal-security/main amd64 Packages [2,774 kB]
       Get:6 http://archive.ubuntu.com/ubuntu focal-security/universe amd64 Packages [1,057 kB]
       Get:7 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [1,353 kB]
       Get:8 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [3,253 kB]
       Fetched 8,664 kB in 2s (5,311 kB/s)
       Reading package lists...
-----> Fetching .debs for libglib2.0-0
       Reading package lists...
       Building dependency tree...
       0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 43 not upgraded.
       Need to get 0 B/1,287 kB of archives.
       After this operation, 0 B of additional disk space will be used.
       Download complete and in download only mode
-----> Fetching .debs for libglib2.0-dev
       Reading package lists...
       Building dependency tree...
       0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 43 not upgraded.
       Need to get 0 B/1,506 kB of archives.
       After this operation, 0 B of additional disk space will be used.
       Download complete and in download only mode
-----> Fetching .debs for libpoppler-glib8
       Reading package lists...
       Building dependency tree...
       0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 43 not upgraded.
       Need to get 0 B/109 kB of archives.
       After this operation, 0 B of additional disk space will be used.
       Download complete and in download only mode
-----> Installing libglib2.0-0_2.64.6-1~ubuntu20.04.4_amd64.deb
-----> Installing libglib2.0-dev_2.64.6-1~ubuntu20.04.4_amd64.deb
-----> Installing libnspr4_2%3a4.25-1_amd64.deb
-----> Installing libnss3_2%3a3.49.1-1ubuntu1.7_amd64.deb
-----> Installing libnss3_2%3a3.49.1-1ubuntu1.8_amd64.deb
-----> Installing libnss3_2%3a3.49.1-1ubuntu1.9_amd64.deb
-----> Installing libpoppler97_0.86.1-0ubuntu1.1_amd64.deb
-----> Installing libpoppler97_0.86.1-0ubuntu1_amd64.deb
-----> Installing libpoppler-glib8_0.86.1-0ubuntu1.1_amd64.deb
-----> Installing libpoppler-glib8_0.86.1-0ubuntu1_amd64.deb
-----> Writing profile script
-----> Rewrite package-config files
-----> Ruby app detected
-----> Installing bundler 2.3.25
-----> Removing BUNDLED WITH version in the Gemfile.lock
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-3.1.2
-----> Installing dependencies using bundler 2.3.25
       Running: BUNDLE_WITHOUT='development:test' BUNDLE_PATH=vendor/bundle BUNDLE_BIN=vendor/bundle/bin BUNDLE_DEPLOYMENT=1 bundle install -j4
       Fetching gem metadata from https://rubygems.org/.........
       Using rake 13.0.6
       Using concurrent-ruby 1.2.2
       Using minitest 5.18.0
       Using builder 3.2.4
       Using mini_portile2 2.8.1
       Using racc 1.6.2
       Using crass 1.0.6
       Using rack 2.2.7
       Using nio4r 2.5.9
       Using websocket-extensions 0.1.5
       Using marcel 1.0.2
       Using mini_mime 1.1.2
       Using date 3.3.3
       Using timeout 0.3.2
       Using public_suffix 4.0.7
       Using connection_pool 2.4.1
       Using http-2 0.11.0
       Using ast 2.4.2
       Using gemoji 4.0.0.rc3
       Using redcarpet 3.5.1
       Using rinku 2.0.6
       Using aws-eventstream 1.2.0
       Using aws-partitions 1.519.0
       Using jmespath 1.6.1
       Using bcrypt 3.1.18
       Using bundler 2.3.25
       Using erubi 1.12.0
       Using thor 1.2.1
       Using zeitwerk 2.6.7
       Using orm_adapter 0.5.0
       Using unf_ext 0.0.8.2
       Using faraday-em_http 1.0.0
       Using faraday-em_synchrony 1.0.0
       Using faraday-excon 1.1.0
       Using faraday-httpclient 1.0.1
       Using multipart-post 2.1.1
       Using faraday-net_http 1.0.1
       Using faraday-net_http_persistent 1.2.0
       Using faraday-patron 1.0.0
       Using faraday-rack 1.0.0
       Using faraday-retry 1.0.3
       Using ruby2_keywords 0.0.5
       Using ffi 1.15.5
       Using geocoder 1.7.3
       Using hashids 1.0.6
       Using honeybadger 4.9.0
       Using http-form_data 2.3.0
       Using mini_magick 4.11.0
       Using json 2.6.1
       Using pagy 5.2.0
       Using method_source 1.0.0
       Using pg 1.2.3
       Fetching ttfunk 1.7.0
       Using rexml 3.2.5
       Using stripe 8.0.0
       Using timezone_finder 1.5.7
       Using i18n 1.12.0
       Using tzinfo 2.0.6
       Using nokogiri 1.14.3
       Using rack-test 2.1.0
       Using websocket-driver 0.7.5
       Using net-protocol 0.2.1
       Using addressable 2.8.0
       Using net-http2 0.18.4
       Using auto_html 2.1.0
       Using aws-sigv4 1.4.0
       Using warden 1.2.9
       Using parser 3.1.2.0
       Using puma 5.6.4
       Using rack-attack 6.6.1
       Using redis-client 0.14.1
       Using sprockets 4.0.2
       Using unf 0.1.4
       Fetching pdf-core 0.9.0
       Using ffi-compiler 1.0.1
       Using faraday-multipart 1.0.3
       Using postmark 1.22.0
       Using activesupport 7.0.4.3
       Using ruby-vips 2.1.4
       Using loofah 2.20.0
       Using net-pop 0.1.2
       Using net-smtp 0.3.3
       Using apnotic 1.7.0
       Using aws-sdk-core 3.121.3
       Using scout_apm 5.1.1
       Using sidekiq 7.1.1
       Using sitemap_generator 6.1.2
       Using net-imap 0.3.4
       Using domain_name 0.5.20190701
       Using faraday 1.9.3
       Using http-parser 1.2.3
       Using rails-dom-testing 2.0.3
       Using globalid 1.1.0
       Using activemodel 7.0.4.3
       Using groupdate 6.0.1
       Using inline_svg 1.7.2
       Using pundit 2.2.0
       Using view_component 2.69.0
       Using rails-html-sanitizer 1.5.0
       Using aws-sdk-kms 1.50.0
       Using image_processing 1.12.2
       Using mail 2.8.1
       Using http-cookie 1.0.5
       Using actionview 7.0.4.3
       Using activejob 7.0.4.3
       Using activerecord 7.0.4.3
       Using aws-sdk-s3 1.104.0
       Using faraday_middleware 1.2.0
       Using http 4.4.1
       Using actionpack 7.0.4.3
       Using actioncable 7.0.4.3
       Using actionmailer 7.0.4.3
       Using activestorage 7.0.4.3
       Using railties 7.0.4.3
       Using hashid-rails 1.4.1
       Using pg_search 2.3.6
       Using pretender 0.4.0
       Using sprockets-rails 3.4.2
       Using tarpon 0.4.0
       Using fathom_api 0.1.2
       Using postmark-rails 0.22.0
       Using actionmailbox 7.0.4.3
       Using actiontext 7.0.4.3
       Using classy-yaml 0.7.0
       Using cssbundling-rails 1.0.0
       Using responders 3.1.0
       Using turbo-rails 1.3.1
       Using jsbundling-rails 1.0.0
       Using rails-i18n 7.0.3
       Using devise 4.9.0
       Using rails 7.0.4.3
       Using stimulus-rails 0.7.2
       Using invisible_captcha 2.0.0
       Using noticed 1.5.9
       Using pay 6.3.2
       Using devise-i18n 1.10.1
       Using hotwire-rails 0.1.3
       Installing pdf-core 0.9.0
       Installing ttfunk 1.7.0
       Fetching prawn 2.4.0
       Installing prawn 2.4.0
       Fetching prawn-table 0.2.2
       Installing prawn-table 0.2.2
       Fetching prawn-rails 1.4.2
       Installing prawn-rails 1.4.2
       Bundle complete! 57 Gemfile dependencies, 140 gems now installed.
       Gems in the groups 'development' and 'test' were not installed.
       Bundled gems are installed into `./vendor/bundle`
       Bundle completed (2.83s)
       Cleaning up the bundler cache.
-----> Installing node-v16.18.1-linux-x64
-----> Installing yarn-v1.22.19
-----> Detecting rake tasks

 !
 !     Could not detect rake tasks
 !     ensure you can run `$ bundle exec rake -P` against your app
 !     and using the production group of your Gemfile.
 !     rake aborted!
 !     LoadError: cannot load such file -- matrix
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn/transformation_stack.rb:10:in `require'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn/transformation_stack.rb:10:in `<top (required)>'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn.rb:67:in `require_relative'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn.rb:67:in `<top (required)>'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-rails-1.4.2/lib/prawn-rails.rb:1:in `require'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-rails-1.4.2/lib/prawn-rails.rb:1:in `<top (required)>'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:60:in `require'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:60:in `block (2 levels) in require'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:55:in `each'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:55:in `block in require'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:44:in `each'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:44:in `require'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler.rb:186:in `require'
 !     /tmp/build_c783fe60/config/application.rb:8:in `<top (required)>'
 !     /tmp/build_c783fe60/Rakefile:4:in `require_relative'
 !     /tmp/build_c783fe60/Rakefile:4:in `<top (required)>'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load_rakefile'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:710:in `raw_load_rakefile'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:104:in `block in load_rakefile'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:103:in `load_rakefile'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:82:in `block in run'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
 !     /tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:80:in `run'
 !     /tmp/build_c783fe60/bin/rake:4:in `<main>'
 !
/tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/helpers/rake_runner.rb:100:in `load_rake_tasks!': Could not detect rake tasks (LanguagePack::Helpers::RakeRunner::CannotLoadRakefileError)
ensure you can run `$ bundle exec rake -P` against your app
and using the production group of your Gemfile.
rake aborted!
LoadError: cannot load such file -- matrix
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn/transformation_stack.rb:10:in `require'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn/transformation_stack.rb:10:in `<top (required)>'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn.rb:67:in `require_relative'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-2.4.0/lib/prawn.rb:67:in `<top (required)>'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-rails-1.4.2/lib/prawn-rails.rb:1:in `require'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/prawn-rails-1.4.2/lib/prawn-rails.rb:1:in `<top (required)>'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:60:in `require'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:60:in `block (2 levels) in require'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:55:in `each'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:55:in `block in require'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:44:in `each'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler/runtime.rb:44:in `require'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/bundler-2.3.25/lib/bundler.rb:186:in `require'
/tmp/build_c783fe60/config/application.rb:8:in `<top (required)>'
/tmp/build_c783fe60/Rakefile:4:in `require_relative'
/tmp/build_c783fe60/Rakefile:4:in `<top (required)>'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/rake_module.rb:29:in `load_rakefile'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:710:in `raw_load_rakefile'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:104:in `block in load_rakefile'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:103:in `load_rakefile'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:82:in `block in run'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
/tmp/build_c783fe60/vendor/bundle/ruby/3.1.0/gems/rake-13.0.6/lib/rake/application.rb:80:in `run'
/tmp/build_c783fe60/bin/rake:4:in `<main>'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:967:in `rake'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails4.rb:69:in `block in run_assets_precompile_rake_task'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/base.rb:175:in `log'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails4.rb:63:in `run_assets_precompile_rake_task'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:103:in `block in compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:988:in `allow_git'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/ruby.rb:96:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails2.rb:55:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails3.rb:37:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails4.rb:30:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/rails6.rb:17:in `compile'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/bin/support/ruby_compile:19:in `block in <main>'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/lib/language_pack/base.rb:175:in `log'
	from /tmp/codon/tmp/buildpacks/50d5eddf222a9b7326028041d4e6509f915ccf2c/bin/support/ruby_compile:18:in `<main>'
 !     Push rejected, failed to compile Ruby app.
 !     Push failed

DEPRECATION WARNING: Rendering actions with '.' in the name is deprecated

Hello there and thanks for prawn-rails!

We're seeing a deprecation warning since a recent rails upgrade:

DEPRECATION WARNING: Rendering actions with '.' in the name is deprecated: .../show.pdf.prawn

We're rendering a file the way suggested in https://github.com/cortiz/prawn-rails/issues/32, but I assume this is an issue with all templates that follow the file naming convention from your docs.

Is this something you're aware of? Are you working on a fix or do you have a suggestion on how to fix the issue on our side?

Thanks in advance and all the best!