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I am trying to create a Tempfile and write some text into it. But I get this strange behaviour in rails console
t = Tempfile.new("test_temp") # => #<File:/tmp/test_temp20130805-28300-1u5g9dv-0> t << "Test data" # => #<File:/tmp/test_temp20130805-28300-1u5g9dv-0> t.write("test data") # => 9 IO.read t.path # => "" I also tried cat /tmp/test_temp20130805-28300-1u5g9dv-0 but the file is empty
Am I missing anything ? Or what's the proper way to write to Tempfile?
FYI I'm using ruby 1.8.7 and rails 2.3.12
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If you want to write text data into a temp file, you can use the writelines() method instead. For using this method, we need to create the tempfile using w+t mode instead of the default w+b mode. To do this, a mode param can be passed to TemporaryFile() to change the mode of the created temp file.
A utility class for managing temporary files. When you create a Tempfile object, it will create a temporary file with a unique filename. A Tempfile objects behaves just like a File object, and you can perform all the usual file operations on it: reading data, writing data, changing its permissions, etc.
You're going to want to close the temp file after writing to it. Just add a t.close to the end. I bet the file has buffered output.
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