lib/pdfkit/pdfkit.rb in pdfkit-0.3.0 vs lib/pdfkit/pdfkit.rb in pdfkit-0.3.1

@@ -28,16 +28,15 @@
       :margin_bottom => '0.75in',
       :margin_left => '0.75in'
     }
     @options = normalize_options(options.reverse_merge(default_options))
     
-    @cmd  = `which wkhtmltopdf-proxy`.chomp
-    raise NoExecutableError.new if @cmd.blank?
+    raise NoExecutableError.new if wkhtmltopdf.blank?
   end
   
   def command
-    args = [@cmd]
+    args = [wkhtmltopdf]
     args += @options.to_a.flatten.compact
     args << '--quiet'
     
     if @source.html?
       args << '-' # Get HTML from stdin
@@ -63,9 +62,13 @@
   def to_file(path)
     File.open(path,'w') {|file| file << self.to_pdf}
   end
   
   protected
+  
+    def wkhtmltopdf
+      @wkhtmltopdf ||= `which wkhtmltopdf-proxy`.chomp
+    end
   
     def style_tag_for(stylesheet)
       "<style>#{File.read(stylesheet)}</style>"
     end
     
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