Pdf - Rorcraft Blog

Rorcraft Blog

Generate PDFs in Rails with RFPDF

1, Install railsrfpdf plugin
ruby script/plugin install http://cnruby.googlecode.com/svn/trunk/rails-projects/infoq_rfpdf/vendor/plugins/railsrfpdf/

2, add new Mime type to environment.rb：
Mime::Type.register “application/pdf”, :pdf

3, in the controller：
—- rubyrespond_to do |format|
format.html # show.rhtml
format.xml { render :xml => @page.to_xml }
format.pdf do
pdf = FPDF.new
pdf.AddPage
pdf.SetFont(“Arial”,‘B’,18)
pdf.Cell(100, 20, “Hello World”)
send_data pdf.Output, :filename => “hello.pdf”, :type => “application/pdf”
end
end


<img src="http://devblog.rorcraft.com/assets/2007/12/19/hello.png" />

<strong>Useful method in RPDF</strong>
SetFont(string family [, string style [, float size]])
SetMargins(float left, float top [, float right])
SetTextColor(int r [, int g, int b])
SetXY(float x, float y)
AddFont(string family [, string style [, string file]])
Cell(float w [, float h [, string txt [, mixed border [, int ln [, string align [, int fill [, mixed link]]]]]]])
Image(string file, float x, float y [, float w [, float h [, string type [, mixed link]]]])
Line(float x1, float y1, float x2, float y2)
MultiCell(float w, float h, string txt [, mixed border [, string align [, int fill]]])
Rect(float x, float y, float w, float h [, string style])

<strong>A case in real world</strong>
<macro:code  lang="ruby">
    pdf = FPDF.new('portrait', 'pt', [800, 1380]) 
    pdf.SetAutoPageBreak(false) 
    pdf.AddPage 
    # draw a rectangle 
    pdf.SetFillColor(240, 240, 240) 
    pdf.Rect(0, 0, 800, 895, 'F')    pdf.Image("#{RAILS_ROOT}/public/images/a.jpg", 0, 0, 800, 600) 
    # add four images 
    pdf.Image("#{RAILS_ROOT}/public/images/b.jpg", 0, 700, 260) 
    pdf.Image("#{RAILS_ROOT}/public/images/c.jpg", 270, 700, 260) 
    pdf.Image("#{RAILS_ROOT}/public/images/d.jpg", 540, 700, 260) 
    # write text 
    txt = 'Agile Web Development' 
    pdf.SetFont("Arial", 'B', 38) 
    pdf.SetXY(0, 600) 
    pdf.Cell(800, 100, txt, 10, 1, 'C') 
    pdf.SetTextColor(10, 10, 10) 
    txt = 'What is Ruby FPDF?' 
    pdf.SetFont("Arial", 'B', 30) 
    pdf.SetXY(20, 920) 
    pdf.Cell(300, 30, txt, 10, 1) 
    txt = "Ruby FPDF is a Ruby port of Olivier Plathey's excellent PDF generator, /
 FPDF. FPDF is written in PHP, 
and as such can only be used From PHP scripts. /
Ruby FPDF, as the name suggests, is written in Ruby and /
can be used From Ruby scripts.    Ruby FPDF was ported and is maintained by Brian Ollenberger. /
 If you need to contact me, see the contact link abovenYou can download Ruby FPDF below. /
 It is released under a permissive license, similar to that of FPDF. I only ask that you retain the /
 copyright notice at the top of the source file. You may make modifications to FPDF, but if you /
redistribute those modifications, make it clear in a comment immediately before or after the /
 copyright notice that you have modified it. I also wouldn't mind if you sent patches back to me, /
 but you are not strictly required to do so." 
    pdf.SetFont("Arial", '', 18) 
    pdf.SetXY(20, 960) 
    pdf.MultiCell(500, 20, txt) 
    txt = 'Ruby | On | Rails' 
    pdf.SetFont("Arial", '', 24) 
    pdf.SetXY(540, 920) 
    pdf.Cell(260, 30, txt, 10, 1, 'C') 
    #draw rectangle 
    pdf.SetFillColor(240, 240, 240) 
    pdf.Rect(550, 960, 230, 300, 'F') 
    #write text 
    txt = "* Get Excitednn* Get Startedn* Get BetternnContactnnEnjoy Railsnenjoyrails@gmail.com" 
    pdf.SetFont("Arial", 'B', 18) 
    pdf.SetXY(560, 970) 
    pdf.MultiCell(220, 36, txt) 
    pdf.SetFillColor(170, 0, 1) 
    pdf.Rect(0, 1310, 800, 70, 'F') 
    txt = 'View this page at http://devblog.rorcraft.com/' 
    pdf.SetTextColor(255, 255, 255) 
    pdf.SetFont("Arial", '', 28) 
    pdf.SetXY(0, 1330) 
    pdf.Cell(800, 24, txt, 0, 0, 'C') 
    send_data pdf.Output, :filename =&gt; "hello_advance.pdf", :type =&gt; "application/pdf"