Merge pull request gazay#47 from torbjon/master

gazay · gazay · commit a21d7b900bd9 · 2012-05-22T10:21:33.000-07:00
Added :init option for initializing window.gon variable on each request
diff --git a/README.md b/README.md
@@ -82,6 +82,16 @@ You can change the namespace of the variables:
   ...
 ```
 
+You can initialize window.gon = {}; on each request
+
+``` erb
+<head>
+  <title>some title</title>
+  <%= include_gon(:init => true) %>
+  <!-- include your action js code with 'serverExports' namespace -->
+  ...
+```
+
 You can get json without script tag (kudos to @afa):
 
 ``` erb
diff --git a/lib/gon/base.rb b/lib/gon/base.rb
@@ -12,13 +12,15 @@ def render_data(options)
         start = "#{need_tag ? '<script>' : ''}window.#{namespace} = {};"
         script = ''
 
-        if options[:camel_case]
-          data.each do |key, val|
-            script << "#{namespace}.#{key.to_s.camelize(:lower)}=#{val.to_json};"
-          end
-        else
-          data.each do |key, val|
-            script << "#{namespace}.#{key.to_s}=#{val.to_json};"
+        if data.present?
+          if options[:camel_case]
+            data.each do |key, val|
+              script << "#{namespace}.#{key.to_s.camelize(:lower)}=#{val.to_json};"
+            end
+          else
+            data.each do |key, val|
+              script << "#{namespace}.#{key.to_s}=#{val.to_json};"
+            end
           end
         end
 
diff --git a/lib/gon/helpers.rb b/lib/gon/helpers.rb
@@ -13,6 +13,9 @@ def include_gon(options = {})
         elsif Gon.global.all_variables.present?
           Gon.clear
           Gon::Base.render_data(options)
+        elsif options[:init].present?
+          Gon.clear if Gon.all_variables.present?
+          Gon::Base.render_data(options)
         else
           ""
         end
diff --git a/spec/gon/basic_spec.rb b/spec/gon/basic_spec.rb
@@ -79,6 +79,19 @@
                                   'gon.int=1;'
     end
 
+    
+    it 'outputs correct js without variables, without tag and gon init' do
+      @base.include_gon(need_tag: false, init: true).should == \
+                                  'window.gon = {};'
+    end
+
+    it 'outputs correct js without variables, without tag and gon init' do
+      Gon.int = 1
+      @base.include_gon(need_tag: false, init: true).should == \
+                                  'window.gon = {};' +
+                                  'gon.int=1;'
+    end
+
   end
 
   it 'returns exception if try to set public method as variable' do
