Merge pull request #175 from ruby-docx/add-header-footer-write

Persist header and footer edits on save (original work by @aashish in #42)

Author: satoryu

lib/docx/document.rb

@@ -245,6 +245,12 @@ def load_rels
     def update
       replace_entry 'word/document.xml', doc.serialize(save_with: 0)
       replace_entry 'word/styles.xml', styles_configuration.serialize(save_with: 0)
+      headers.each do |name, content|
+        replace_entry "word/#{name}.xml", content.serialize(save_with: 0)
+      end
+      footers.each do |name, content|
+        replace_entry "word/#{name}.xml", content.serialize(save_with: 0)
+      end
     end
 
     # generate Elements::Containers::Paragraph from paragraph XML node

spec/docx/document_spec.rb

@@ -84,6 +84,27 @@
     end
   end
 
+  describe 'updating headers and footers' do
+    before do
+      @doc = Docx::Document.open(@fixtures_path + '/multi_doc.docx')
+      @new_doc_path = @fixtures_path + '/multi_doc_saved.docx'
+    end
+
+    after do
+      File.delete(@new_doc_path) if File.exist?(@new_doc_path)
+    end
+
+    it 'persists changes to headers and footers after save' do
+      @doc.headers['header1'].at_xpath('//w:t').content = 'Edited header.'
+      @doc.footers['footer1'].at_xpath('//w:t').content = 'Edited footer.'
+      @doc.save(@new_doc_path)
+
+      reopened = Docx::Document.open(@new_doc_path)
+      expect(reopened.headers['header1'].text).to eq 'Edited header.'
+      expect(reopened.footers['footer1'].text).to eq 'Edited footer.'
+    end
+  end
+
   describe 'read tables' do
     before do
       @doc = Docx::Document.open(@fixtures_path + '/tables.docx')