I am developing a rails application using PDFKit.
I need to shrink the output into one page.
So I passed --disable-smart-shrinking=>false. (I tried --enable-smart-shrinking=>true but it doesn't make difference)
PDFKit.configure do |config|
config.wkhtmltopdf = "/some/path/wkhtmltopdf"
config.default_options = {
:encoding=>"UTF-8",
:page_size=>"Letter",
:margin_top=>"0.25in",
:margin_right=>"0.5in",
:margin_bottom=>"0.25in",
:margin_left=>"0.5in",
:disable_smart_shrinking=>false
}
end
Shrinking works on my dev machine(OS X) but doesn't on the production server (Linux).
Version 0.11.0 rc1 on the linux doesn't shrink.
Version 0.9.9 on my OS X shrinks.
Can you help me with it?
Thanks.
Sam
Some options (including the one you mentioned) only work with a patched version of QT. http://madalgo.au.dk/~jakobt/wkhtmltoxdoc/wkhtmltopdf-0.9.9-doc.html Unfortunately I don't know any more than that, but it should get you in the right direction.
Related
I can't get ActiveStorage images to work in production. I want to use a resized image (variant) within the body of the PDF I'm generating.
= image_tag(#post.image.variant(resize_to_limit: [150, 100]))
It worked in development but in production generating the PDF hangs indefinitely unless I take that line out.
I've tried things like #post.image.variant(resize_to_limit: [150, 100]).processed.url and setting Rails.application.default_url_options = { host: "example.com" }
Ironically when I restart Passenger it sends the PDF to the browser and it actually looks fine. The image is included.
This is similar:
= wicked_pdf_image_tag(#post.image.variant(resize_to_limit: [150, 100]).processed.url)
Rails 7.0.3, Ruby 3.1.2, wicked_pdf 2.6.3
Thanks to #Unixmonkey I added passenger_min_instances 3; to my server block in Nginx config and it worked initially but would hang Passenger under load. Since I didn't have the RAM to throw at increasing that number I came up with a different solution based on reading images from file.
= image_tag(active_storage_to_base64_image(#post.image.variant(resize_to_limit: [150, 100])))
Then I created a helper in application_helper.rb
def active_storage_to_base64_image(image)
require "base64"
file = File.open(ActiveStorage::Blob.service.path_for(image.processed.key))
base64 = Base64.encode64(file.read).gsub(/\s+/, '')
file.close
"data:image/png;base64,#{Rack::Utils.escape(base64)}"
end
I've hard coded it for PNG files as that's all I needed. Only works for Disk storage. Would welcome improvements
This is my code for drop down selection using ruby:
ruby version is 2.4.3
watir version 6.8.4
cucumber version 3.01
firefox version 47
b.select(id: 'curLocation').option(text: 'Chennai').select
This code is not working for me.
require 'watir'
b = Watir::Browser.start 'bit.ly/watir-webdriver-demo'
s = b.select_list id: 'entry_1000001'
s.select'Ruby'
s.selected_options
Reference: watir
select_from_list = browser.select_list(:xpath, "xpath")
.option(:text => opts[:yourjson])
select_from_list.select
Its for example.
I hope it will help you
Exactly - you can use .option(:xpath, "xpath")
or .option(code: "xpath")
You are using #select wrong. Take a look at the specs for more examples, but all you have to do is:
b.select(id: 'curLocation').select('Chennai')
Also, Firefox 47 isn't a supported version any longer. Please update to the latest version of Firefox, and the latest geckodriver. Also your title says Watir 6.8.4, but you list 5.1.4, which is deprecated.
Currently using pdfkit, for the most part it's been great to use.
The only issue is line thickness. Borders on the source html look great, on the pdf generated look much thicker.
Also thickness varies in the document. On lines of the same width, it appears thicker in places. Even borders on the same div may appear thicker on the 3 of the 4 borders, even though they have the same CSS.
Any way to remedy this?
Well if you explore the extended help -H on wkhtmltopdf you would find a options called dpi
So perhaps you can set a dpi in pdfkit something like this
PDFKit.configure do |config|
config.wkhtmltopdf = '/path/to/wkhtmltopdf'
config.default_options = {
:page_size => 'Legal',
:print_media_type => true,
:dpi => [your dpi setting]
}
# Use only if your external hostname is unavailable on the server.
config.root_url = "http://localhost"
end
Note
Having said that it you examine the help deeply you would know that that it states
-d, --dpi <dpi> Change the dpi explicitly (this has no
effect on X11 based systems)
I clearly state it has no effect on system that based on X11 so I would rather see that of any help for you
Other options
So dpi options is hardly of use what are other options ?
Well in fact there is one check this link and trace to last comment and see some of that help in your quest (i.e try increasing the resolution of the xvfb in case if your running an xvfb server)
Hope this help
We have a Ruby on Rails application that needs to convert a PDF into a PNG with a transparent background. We're using rmagick 2.13.1. On our development machines the following code works exactly how we want it.
pages = Magick::Image.from_blob(book.to_pdf.render){ self.density = 300 }
page = pages[0]
image_file = Tempfile.new(['preview_image', '.png'])
image_file.binmode
image_file.write( page.to_blob { |opt| opt.format = "PNG" } )
We thens save the image_file and all is peachy. When we deployed to a review server on Heroku, though, the generated image has a white background. It turns out that Heroku's cedar stack is using imagemagick ImageMagick 6.5.7-8 2010-12-02 where we're using ImageMagick 6.7.5-7 2012-05-08 on our development machines.
I've scoured the net for older posts that might apply to the older version to try and figure out how to generate the transparent PNGs. It's surely supported, but, so far I haven't been able to figure out the right combination of settings.
To verify that it wasn't the PDF generation that was the problem, I downloaded a PDF generated on Heroku and successfully converted it using the above code (slightly modified to read the file in instead of generate it) to a transparent PNG.
Some of the things I've tried in various combinations are:
page.matte = true
page.format = "PNG32"
page.background_color = "none"
page.transparent_color = "white"
page.transparent("white")
So, the question is "is this possible?". If so, which settings do I need to set on the image before writing it out?
I'm also investigating including a compiled binary of a more up to date Imagemagick on Heroku.
Any help is appreciated.
This should no longer be an issue, as Heroku has ImageMagick versions 6.7-6.9 on their various stacks.
I wanted to create PDFs for my rails application using wkhtml2pdf and wicked_pdf.
I downloaded and extracted wkhtml2pdf beta 4 and placed it in /usr/local/bin/wkhtml2pdf
I tried running it on a web site and it gave a nice result.
In my rails application (2.3.4) I installed wicked_pdf:
script/plugin install git://github.com/mileszs/wicked_pdf.git
script/generate wicked_pdf
Everything seemed to be ok.
inside script/console I run the following - (with the following output)
wp = WickedPdf.new
=># WickedPdf:0xb62f2c70 #exe_path="/usr/local/bin/wkhtmltopdf"
HTML_DOCUMENT = "<html><body>Hello World</body></html>"
=> "<html><body>Hello World</body></html>"
pdf = wp.pdf_from_string HTML_DOCUMENT
=> "/usr/local/bin/wkhtmltopdf - - -q"
=> "\n\n\n\n\n\n\n\n\n\n"
of course this isn't good. According to the test the result of my last command should start with "%pdf-1.4"
Any idea what I can do?
Having the same problem. Removed the -q option from the wicked_pdf.rb file on line 19 and then was able to get the proper string on the console.
=> "%PDF-1.4\n1 0 obj\n<<\n/Title ...
This also seems to have solved other problems. The PDF still didn't render correctly when using it from the web site - embedded font issue - on to the next issue now.
Hopefully this will work for you.