I am creating a PDF file using Wicked:
pdf = WickedPdf.new.pdf_from_string('<h1>Hello There!</h1>')
I assume that this creates a temporary file somewhere. How can I get the path to this temp file?
you can do this when you are creating the pdf only u can pass in the option of your desired temp path
pdf = WickedPdf.new.pdf_from_string('<h1>Hello There!</h1>', {temp_path: "your path here")
Refer this link for more inputs this contains the function that you are using and the inputs that can be passed
Please refer to example of https://github.com/mileszs/wicked_pdf#super-advanced-usage.
The official example use File
pdf = render_to_string pdf: "some_file_name", template: "templates/pdf", encoding: "UTF-8"
# then save to a file
save_path = Rails.root.join('pdfs','filename.pdf')
File.open(save_path, 'wb') do |file|
file << pdf
end
You may use tempfile to do it as
pdf_string = WickedPdf.new.pdf_from_string(...)
overlay = Tempfile.new('overlay')
overlay.binmode
overlay.write(pdf_string)
overlay.close
overlay.path # to get path
Checking the source of WickedPDF it has a TempFile
The temporary file should be created in the temporary directory as defined in options, or in Dir.tmpdir.
Related
I am trying to create a new file and then write some content to it just to create a basic backup of a template.
When I log out the values of filename and file_content they are correct, but when I send the data all I get is a file named after the method (download_include) and a fixnum inside the file, the last one made was 15.
# POST /download_include/:id
def download_include
#include = Include.find(params[:id])
version_to_download = #include.latest_version_record
filename = "#{version_to_download.name}"
file_content = "#{version_to_download.liquid_code.to_s}"
file = File.open(filename, "w") { |f| f.write (file_content) }
send_data file
end
I also tried send_file but that produces the error
no implicit conversion of Fixnum into String
I also tried to just write dummy values like below, and it still produced a file named after the method with a fixnum inside it.
file = File.open("DOES THIS CHANGE THE FILENAME?", "w") { |f| f.write ("FILE CONTENT?") }
I feel I am missing something obvious but I cannot figure it out after looking at many examples here and in blogs.
If you don't end along the filename as an option for send_data, it defaults to the method name.
Secondly, the download wants to read the data from a buffer. My guess is your syntax is just sending a file handle.
Try this...
send_data(file.read, filename: filename)
Or skip the intermediate file and try...
send_data(version_to_download.liquid_code.to_s, filename: filename)
I am using Libreconv gem to convert word to doc but it's not working with S3
bucket = Aws::S3::Bucket.new('bucket-name')
object = bucket.object file.attachment.blob.key
path = object.presigned_url(:get)
Libreconv.convert(path, "public/test.pdf")
If I try to convert this path to PDF using Libreconv then it's give me filename too long error. I have wrriten this code under ActiveJobs. So kindly provide me solutions as per ActiveJobs.
Can someone please suggest me how can I convert word file to pdf.
Here path is https://domain.s3.amazonaws.com/Bf5qPUP3znZGCHCcTWHcR5Nn?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIZ6RZ7J425ORVUYQ%2F20181206%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20181206T051240Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&X-Amz-Signature=b89c47a324b2aa423bf64dfb343e3b3c90dce9b54fa9fe1bc4efa9c248e912f9
and error I am getting is
Error: source file could not be loaded
*** Errno::ENAMETOOLONG Exception: File name too long # rb_sysopen - /tmp/Bf5qPUP3znZGCHCcTWHcR5Nn?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIZ6RZ7J425ORVUYQ%2F20181206%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20181206T051240Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&X-Amz-Signature=b89c47a324b2aa423bf64dfb343e3b3c90dce9b54fa9fe1bc4efa9c248e912f9.pd
It seems that you PDF is created with all the params needed to fetch docx from S3.
I suppose it happens in this line:
target_tmp_file = "#{target_path}/#{File.basename(#source, ".*")}.#{File.basename(#convert_to, ":*")}"
#source is https://domain.s3.amazonaws.com/Bf5qPUP3znZGCHCcTWHcR5Nn?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIZ6RZ7J425ORVUYQ%2F20181206%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20181206T051240Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&X-Amz-Signature=b89c47a324b2aa423bf64dfb343e3b3c90dce9b54fa9fe1bc4efa9c248e912f9 and
> File.basename(#source, ".*")
=> "Bf5qPUP3znZGCHCcTWHcR5Nn?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIZ6RZ7J425ORVUYQ%2F20181206%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20181206T051240Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&X-Amz-Signature=b89c47a324b2aa423bf64dfb343e3b3c90dce9b54fa9fe1bc4efa9c248e912f9"
As a result Libreconv gem tries to create a tmp file with this long name and it's too long - that's why an error is raised.
Possible solution: split the process into separate steps of fetching file and converting it. Something like:
require "open-uri"
bucket = Aws::S3::Bucket.new('bucket-name')
object = bucket.object file.attachment.blob.key
path = object.presigned_url(:get)
doc_file = open(path)
begin
Libreconv.convert(doc_file.path, "public/test.pdf")
ensure
doc_file.delete
end
following is the answer using combine pdf gem
tape = Tape.new(file)
result = tape.preview
tempfile = Tempfile.new(['foo', '.pdf'])
File.open(tempfile, 'wb') do |f|
f.write result
end
path = tempfile.path
combine_pdf(path)
and for load file for S3 I have used
object = #bucket.object object_key
path = object.presigned_url(:get)
response = Net::HTTP.get_response(URI.parse(path)).body
I am generating invoices as PDFs and want to upload them directly to S3.
I am using Wicked-PDF and the official AWS SDK.
gem 'wicked_pdf'
gem 'aws-sdk-s3', '~> 1'
Now I create the PDF:
pdf = render_to_string pdf: "some_file_name", template: "invoices/download", encoding: "UTF-8"
And want to upload it:
s3 = Aws::S3::Resource.new(region: ENV['AWS_REGION'])
obj = s3.bucket('bucket-development').object('Filename')
obj.upload_file(pdf)
The error I get:
ArgumentError: string contains null byte
If I store the PDF first to a defined path and use the save_path it works:
save_path = Rails.root.join('public','filename.pdf')
File.open(save_path, 'wb') do |file|
file << pdf
end
But I would like to upload he temporary PDF directly to S3 without saving the PDF first to my public folder.
The upload_file method from AWS S3 SDK is working with files - see the method's description.
For uploading an object from memory, you should use the put method - see the method's description in the 2nd way of uploading on this page
My App saves Files to the Filesystem via an base64 encoded API. Here is my (simplified) controller:
def create
file = "name.pdf"
folder = "downloads"
FileUtils::mkdir_p folder
f = File.open File.join(folder, file), "wb"
if f.write Base64.decode64(params[:file])
f.close
end
Now I want to test for an actual file creation. How do I check whether there is a file or not?
Thanks for your input!
I am using spreadsheet gem to generate .xls file. After writing it to a file, I am trying to send to client browser for download.
Below is the code in rails
workbook = Spreadsheet::Workbook.new
# Constructed the data
file = "/path/to/file/sheet.xls"
workbook.write file
send_file file
This file when opened contains expected data in ideal format.
Below is the code in js:
CustomRestService.custom_post("report",{report_data: angular.toJson($scope.report_data)},"download_xls",{}).then (data)->
if data
hiddenElement = document.createElement('a')
angular.element(document.body).append(hiddenElement)
hiddenElement.href = 'data:attachment/xls,' + encodeURI(data)
hiddenElement.target = '_blank'
hiddenElement.download = "report.xls"
hiddenElement.click()
hiddenElement.remove()
But the file getting downloaded in browser contains junk data. I tried multiple solutions like below:
Using send_data, instead of send_file
Generated xls data and wrote to StringIO object to directly download
Constructed Blob object in js, with type as "application/vnd.ms-excel" and trying to download it.
All attempts failed, as I am missing something. All suggestions are welcome.
filename = "/path/to/file/sheet.xls"
tempfile = Tempfile.new(filename)
workbook = Spreadsheet::Workbook.new
...
workbook.write(tempfile.path)
send_file tempfile.path, :filename => filename