added support for skip_header in builder and dsl. #15

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    activeadmin-axlsx (2.1.2)
+    activeadmin-axlsx (3.0.0)
       activeadmin (~> 0.6.0)
       axlsx
 
@@ -51,11 +51,12 @@ GEM
     arbre (1.0.1)
       activesupport (>= 3.0.0)
     arel (3.0.2)
+    atomic (1.1.14)
     axlsx (2.0.1)
       htmlentities (~> 4.3.1)
       nokogiri (>= 1.4.1)
       rubyzip (~> 1.0.0)
-    bcrypt-ruby (3.0.1)
+    bcrypt-ruby (3.1.2)
     bourbon (3.1.3)
       sass (>= 3.2.0)
       thor
@@ -84,11 +85,12 @@ GEM
       cucumber (>= 1.1.3)
       nokogiri (>= 1.5.0)
     database_cleaner (0.9.1)
-    devise (2.2.3)
+    devise (3.1.0)
       bcrypt-ruby (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (~> 3.1)
-      warden (~> 1.2.1)
+      railties (>= 3.2.6, < 5)
+      thread_safe (~> 0.1)
+      warden (~> 1.2.3)
     diff-lcs (1.1.3)
     erubis (2.7.0)
     execjs (1.4.0)
@@ -124,7 +126,7 @@ GEM
       selenium-webdriver (>= 0.1.3)
     jasmine-core (1.2.0)
     journey (1.0.4)
-    jquery-rails (2.2.1)
+    jquery-rails (3.0.4)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
     jslint_on_rails (1.0.7)
@@ -228,12 +230,14 @@ GEM
       tilt (~> 1.1, != 1.3.0)
     sqlite3 (1.3.6)
     thor (0.16.0)
+    thread_safe (0.1.3)
+      atomic
     tilt (1.3.3)
-    treetop (1.4.12)
+    treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (0.3.37)
-    warden (1.2.1)
+    tzinfo (0.3.38)
+    warden (1.2.3)
       rack (>= 1.0)
     websocket (1.0.3)
     xpath (0.1.4)

lib/active_admin/axlsx/builder.rb

@@ -41,6 +41,7 @@ class Builder
       #   end
       #   @see ActiveAdmin::Axlsx::DSL
       def initialize(resource_class, options={}, &block)
+        @skip_header = false
         @columns = resource_columns(resource_class)
         parse_options options
         instance_eval &block if block_given?
@@ -61,6 +62,11 @@ def header_style=(style_hash)
         @header_style = header_style.merge(style_hash)
       end
 
+      # Indicates that we do not want to serialize the column headers
+      def skip_header
+        @skip_header = true
+      end
+
       # The scope to use when looking up column names to generate the report header
       def i18n_scope
         @i18n_scope ||= nil
@@ -154,7 +160,7 @@ def clean_up
       end
 
       def export_collection(collection)
-        header_row(collection)
+        header_row(collection) unless @skip_header
         collection.each do |resource|
           sheet.add_row resource_data(resource)
         end

lib/active_admin/axlsx/dsl.rb

@@ -1,7 +1,7 @@
 module ActiveAdmin
   module Axlsx
     module DSL
-      delegate :ingnore_columns, :column, :after_filer, :i18n_scope, :header_style, to: :xlsx_builder, prefix: :config
+      delegate :ingnore_columns, :column, :after_filer, :i18n_scope, :header_style, :skip_header, to: :xlsx_builder, prefix: :config
       # @see ActiveAdmin::Axlsx::Builder
       def xlsx(options={}, &block)
         config.xlsx_builder = ActiveAdmin::Axlsx::Builder.new(config.resource_class, options, &block)

spec/axlsx/unit/builder_spec.rb

@@ -20,6 +20,11 @@ module Axlsx
           builder.columns.size.should == content_columns.size - 1
         end
 
+        it 'lets us say we dont want the header' do
+          builder.skip_header
+          builder.instance_values["skip_header"].should be_true
+        end
+
         it 'lets us add custom columns' do
           builder.column(:hoge)
           builder.columns.size.should == content_columns.size + 2
@@ -48,6 +53,33 @@ module Axlsx
         end
       end
 
+      context 'sheet generation without headers' do
+        let!(:users) {  [User.new(first_name: 'bob', last_name: 'nancy')] }
+
+        let!(:posts) {  [Post.new(title: 'bob', body: 'is a swell guy', author: users.first)] }
+
+        let!(:builder) {
+          Builder.new(Post, header_style: { sz: 10, fg_color: "FF0000" }, i18n_scope: [:axlsx, :post]) do
+            skip_header
+          end
+        }
+
+        before do
+          User.stub!(:all) { users }
+          Post.stub!(:all) { posts }
+          # disable clean up so we can get the package.
+          builder.stub(:clean_up) { false }
+          builder.serialize(Post.all)
+          @package = builder.send(:package)
+          @collection = builder.collection
+        end
+
+        it 'does not serialize the header' do
+          not_header = @package.workbook.worksheets.first.rows.first
+          not_header.cells.first.value.should_not == 'Title'
+        end
+      end
+
       context 'Sheet generation with a highly customized configuration.' do
 
         let!(:users) {  [User.new(first_name: 'bob', last_name: 'nancy')] }

spec/axlsx/unit/dsl_spec.rb

@@ -11,6 +11,7 @@ module Axlsx
               column(:author) { |post| post.author.first_name }
               before_filter { |sheet| sheet.add_row ['before_filter'] }
               after_filter { |sheet| sheet.add_row['after_filter'] }
+              skip_header
             end
           end
           config.xlsx_builder
@@ -37,6 +38,11 @@ module Axlsx
         it "has an after filter set" do
           builder.instance_values["after_filter"].should be_a(Proc)
         end
+
+        it "indicates that the header should be excluded" do
+          builder.instance_values['skip_header'].should be_true
+        end
+
         it "updates the header style" do
           builder.header_style[:sz].should be(20)
         end