HTMLDoc + Gruff : Graph image not displaying in the PDF file

rubyonrails-talk
1

Hi Everybody,

I m having problem in adding a graph generated by Gruff into a PDF file.

Here is my graph method in controller:

def line_graph g = Gruff::Line.new g.title = "My Graph" g.data("Apples", [1, 2, 3, 4, 4, 3]) g.data("Oranges", [4, 8, 7, 9, 8, 9]) g.labels = {0 => '2003', 2 => '2004', 4 => '2005'} send_data(g.to_blob, :disposition => 'inline', :type => 'image/ png', :filename => "gruff.png") end

I am able to display this in a normal view. But not into PDF file. I am calling this into pdf in a partial:

pdf << render_to_string(:partial => "export_pdf")

Where _export_pdf.html.erb contains:

<%= image_tag url_for(:controller => "projects", :action => "line_graph"), :alt => "Line_graph" %>

Please help me out. I am struck in this from past few days..

Thanks, Bob