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Ruby Tempfile doesn't Create File on Disk


Ruby Tempfile doesn't Create File on Disk

By : Vadim
Date : November 22 2020, 10:40 AM
will help you I'm currently running this code on Ruby. , Can you try a file.close.
Test without Launchy:
code :
require 'tempfile'
file = Tempfile.new(['tempemail', '.html'])
file << 'xx' # Email is a Ruby String (not nil)

file.close #<- This is needed

p File.read(file.path) # -> 'xx'
require 'tempfile'
file = Tempfile.new(['tempemail', '.html'])
file << "xx\n" # Email is a Ruby String (not nil)

p file.path
file.flush

file << "yy\n" # Email is a Ruby String (not nil)
file.flush

p File.read(file.path)


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Create a tempfile without opening it in Ruby

Create a tempfile without opening it in Ruby


By : user3215386
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Is using FileUtils.touch acceptable solution? You can touch a file and delete it once you are done with whatever you want.
Writing to a file via Tempfile in Ruby

Writing to a file via Tempfile in Ruby


By : Donald Chen
Date : March 29 2020, 07:55 AM
I wish this help you The issue is that you're not actually writing csv data to the file. You're sending arrays to the filehandle. I believe you need something like:
code :
Tempfile.open(....) do |fh|
    csv = CSV.new(fh, ...)
    <rest of your code>
end
Ruby Tempfile - Modify file name?

Ruby Tempfile - Modify file name?


By : user7670720
Date : March 29 2020, 07:55 AM
I wish did fix the issue. A Tempfile is used to create a temporary file with a unique file name, which will be cleaned up by the garbage collector or when the ruby interpreter exits.
Tempfiles behave like File objects, but I am not sure if you can rename files and if you can, if the automatic cleanup described above will still work. Additionally you might break the constraint of unique file names if you change the temporary file name manually.
Ruby Tempfile vs File

Ruby Tempfile vs File


By : Mubashir Aslam
Date : March 29 2020, 07:55 AM
I wish did fix the issue. In the first case, you are loading a file from your file system. This create a File object, using the file name (it has one).
In the second case, you are opening a stream toward a remote file. There is no associated file on your file system, yet you need one if you want to make any operation on it. Thus, Ruby creates a Tempfile for you with a unique filename that you don't even need to know (as the resource does not have a name itself). It then behave exactly like a File object.
Ruby create Tempfile to save CSV row and assign it to database

Ruby create Tempfile to save CSV row and assign it to database


By : Kumar
Date : March 29 2020, 07:55 AM
I hope this helps you . I was able to figure something out
it is not perfect yet but it imported some important data
code :
require 'csv'     
class Result < ActiveRecord::Base     
belongs_to :machine     
def self.assign_row(row)    
    line, b, time, real, min, mean, max = row    
    if row[3] =~ /SUMMARY/      
   @midr = row[2].slice(1,3)      
   @mach = Machine.where(:mid => @midr).first      
   @result = Result.create(midr: time, machine_id: @mach.id  )     
  else      
   line, b, time, real, min, mean, max = row      
   @result.update( exps: real, max: max, ideal: mean, time: time  )     
      end      
  end     
 def self.import(file)     
 CSV.foreach(file.path, encoding: 'iso-8859-1:utf-8', skip_blanks: true) do |row|       
next if row.all?(&:nil?)      
result = Result.assign_row(row)     
       end     
  end     
end     
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