Basic Partial Working.

README.rdoc

@@ -76,7 +76,9 @@ Sometimes you need to be able to render a PDF from anywhere (Background process
 
 == Tips & Tricks
 
-While layouts and partials aren't yet supported, helper methods can be called from within the PDF views. To help keep PDF's DRY, I would recommend creating a <code>PdfHelper</code> class for complex functionality. Don't forget to add this helper to your emailer if you generate PDF's as attachments.
+Helper methods can be called from within the PDF views. To help keep PDF's DRY, I would recommend creating a <code>PdfHelper</code> class for complex functionality. Don't forget to add this helper to your emailer if you generate PDF's as attachments.
+
+Limited partial support is available. Check out the wiki for details.
 
 == Testing
 

lib/prawnto/template_handlers/partials.rb

@@ -2,10 +2,30 @@ module Prawnto
   module TemplateHandlers
     module Partials
 
-      def render_partial(path, prawn_object = pdf)
-        # get the path
-        # get file contents (should include a cache somehow?)
-        # prawn_object.instance_eval partial_contents
+      def partial!(partial_name, prawn_object = pdf)
+        prawn_object.instance_eval partial_source(partial_name)
+      end
+
+    private
+
+      def partial_source(partial_name)
+        #todo: implement some caching
+        File.open( get_file_path(partial_name)).read
+      end
+
+      def get_file_path(partial_name)
+        root_path = Rails.root
+        view_path = File.join(root_path, "app/views/")
+        partial_path = cleaned_path(partial_name)
+
+        file_path = Dir[File.join(view_path, partial_path + ".{*.}prawn")].first
+        file_path
+      end
+
+      def cleaned_path(provided_partial_path)
+        *provided_path, file_name = provided_partial_path.split("/")
+        file_name = "_"+file_name unless file_name[0] == "_"
+        File.join(provided_path, file_name)
       end
 
     end

spec/dummy/app/controllers/test_controller.rb

@@ -4,19 +4,24 @@ def default_render
     @x = 1
     render :action => "default_render"
   end
-  
+
   def dsl_render
     @x = 1
     render :action => "dsl_render"
   end
-  
+
   def instance_var_test
     @x = 1
     render :action => "instance_var_test"
   end
-  
+
   def yield_block_in_helper_test
     render :action => "yield_block_in_helper_test"
   end
-
+
+  def partial_render
+    @x = 1
+    render :action => "partial_render"
+  end
+
 end

spec/dummy/app/views/test/_simple_partial.pdf.prawn

@@ -0,0 +1 @@
+text "inside partial"

spec/dummy/app/views/test/partial_render.pdf.prawn

@@ -0,0 +1,3 @@
+text "before partial"
+partial! "test/simple_partial"
+text "after partial"

spec/dummy/config/routes.rb

@@ -1,8 +1,9 @@
 Rails.application.routes.draw do
   get "/default_render" => "test#default_render"
+  get "/partial_render" => "test#partial_render"
   get "/dsl_render" => "test#dsl_render"
   get "/instance_var_test" => "test#instance_var_test"
   get "/yield_block_in_helper_test" => "test#yield_block_in_helper_test"
-  
+
   root :to => "test#default_render"
 end

spec/integrations/test_controller_spec.rb

@@ -1,40 +1,51 @@
 require File.expand_path("../spec_helper.rb", File.dirname(__FILE__))
 
 describe TestController do
-  
+
   describe "simple" do
     it "returns correct PDF" do
       get "/default_render.pdf"
       response.should be_success
-      
+
       asset_binary = File.open(asset_path("default_render")).read.bytes.to_a
       body_binary = response.body.bytes.to_a
       body_binary.should == asset_binary
     end
-    
-    
+
+
     it "shares values/changes of instance vars between view and helpers" do
       expect { get "/instance_var_test.pdf" }.should_not raise_error
     end
-    
+
     it "should render items in a block passed to a helper" do
       get "/yield_block_in_helper_test.pdf"
       asset_binary = File.open(asset_path("yield_block_in_helper_test")).read.bytes.to_a
       body_binary = response.body.bytes.to_a
       body_binary.should == asset_binary
     end
   end
-  
-  
+
+
   describe "dsl" do
     it "returns correct PDF" do
       get "/dsl_render.pdf"
       response.should be_success
-      
+
       asset_binary = File.open(asset_path("dsl_render")).read.bytes.to_a
       body_binary = response.body.bytes.to_a
       body_binary.should == asset_binary
     end
   end
 
+  describe "partials" do
+    it "renders partials" do
+      get "/partial_render.pdf"
+      response.should be_success
+
+      asset_binary = File.open(asset_path("partial_render")).read.bytes.to_a
+      body_binary = response.body.bytes.to_a
+      body_binary.should == asset_binary
+    end
+  end
+
 end

spec/units/template_handlers/partials_spec.rb

@@ -0,0 +1,33 @@
+require "spec_helper"
+require "prawnto/template_handlers/partials.rb"
+
+class PartialTester
+  include Prawnto::TemplateHandlers::Partials
+end
+describe "Prawnto::TemplateHandlers::Partials" do
+  subject do
+    PartialTester.new
+  end
+
+  describe "#get_file_path" do
+    before { Rails.stubs(:root).returns("") }
+
+    it "should find partial in the same folder" do
+      Dir.expects("[]").with("/app/views/test/_p1.{*.}prawn").returns("some/path")
+      path = subject.send :get_file_path, "test/p1"
+    end
+
+    it "won't insert underscore if provided" do
+      Dir.expects("[]").with("/app/views/test/_p1.{*.}prawn").returns("some/path")
+      path = subject.send :get_file_path, "test/_p1"
+    end
+
+    it "should look in the current folder first"
+  end
+
+  describe "#partial_source" do
+  end
+
+  describe "render_partial" do
+  end
+end