Rendering Rails entity as file

Question

I've got a problem which seems to be quite hard to solve in Rails.

Consider having an entity Book which contains many Pages, and consider this Pages having an attribute text which contains (as strange as it may sound) text. More precisely, it is HTML code, and users are usually shown this text when accessing pages/some_page_id/show. Instead, users are shown an "index" of all the pages of a book when they go to books/some_book_id/show.

Now consider I want to let users "download" a book. The book will be downloaded as a zip containing an HTML file for each of its pages.

I'm quite fine with most passages, except with one: managing to render a Page, on a file, when a BooksController method is called.

What I've actually come up with is this line, in BooksController/show:

def show
  if params[:download]
   @book.pages.each do |p|
     content = render_to_string(:controller => "pages", :action => "show", :page_id => p.id)
     File.open(file_name_from_book_name_and_page_number) do |f|
      f.write(content)
     end
   end
 end

This results in a file for each page... But it's content is the content of the HTML the user would see if calling BooksController/show without any params[:download]! That is, what is actually called is not the PagesController/show action with a page id as argument...

How could I achieve that?

Thank you in advance!

This may help: http://stackoverflow.com/questions/14350708/how-to-render-erb-template-to-string-inside-action — A Fader Darkly, Jul 30 '14 at 14:41

score 0 · Answer 1 · edited May 23 '17 at 10:33

0

I don't think that params hash is passed to render_to_string method.

Try this answer How to pass variables to render_to_string?

edited May 23 '17 at 10:33

Community

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answered Jul 30 '14 at 15:15

hypersolid

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Rendering Rails entity as file

1 Answers1