Question

As weird as it may sound, the code that generated pdf using Prawn gem in my local version worked successfully, while in online version it shows nothing but empty pdf page. I have also tried changing the environment to “production” in my local version but still unable to reproduce this issue.

The code I use to generate that pdf was:

 write_attribute(:filepath, "/reports/#{self.publisher.email}/#{Time.now.to_s(:report_filename)}.#{self.format}")
  Prawn::Document.generate(RAILS_ROOT + self.filepath) do |pdf|
    titles = self.display_titles
    items = self.display_items.map do |item|
      titles.collect { |title| item[title.gsub(' ', '')].to_s }
    end
    pdf.table items, :border_style => :grid,
      :row_colors => ["FFFFFF", "DDDDDD"],
      :headers => titles, 
      :align => self.table_aligns
  end

Can anybody help, please?

update 1

Running gem list prawn in local version gave me this:

*** LOCAL GEMS ***

prawn (0.8.4)
prawn-core (0.8.4)
prawn-layout (0.8.4)
prawn-security (0.8.4)

While running it online gave me:

*** REMOTE GEMS ***

prawn (0.8.4)
prawn-blank (0.0.1)
prawn-core (0.8.4)
prawn-fast-png (0.2.3)
prawn-flexible-table (0.1.2)
prawn-format (0.2.3)
prawn-graph (0.0.4)
prawn-js (0.7.1)
prawn-layout (0.8.4)
prawn-security (0.8.4)
prawn-svg (0.9.1.10)
prawn_commander (0.1.2)
prawn_rails (0.0.4)
prawnto (0.0.3)

Is it a clue to anything at all?

Answer 1

As a friend pointed out, Prawn does not like being Frozen Prawn. Install the gem with sudo to ensure it works.