app/assets/javascripts/admin/blog/posts.js in tb_blog-1.3.3 vs app/assets/javascripts/admin/blog/posts.js in tb_blog-1.3.4

@@ -4,10 +4,11 @@
   edit: function(){
     $('body').on('click', '.spud-post-add-category', clickedPostAddCategory);
     $('body').on('submit', '.spud-post-category-form', submittedPostCategoryForm);
     $('body').on('blur', '.spud-post-title', blurredPostTitle);
     $('body').on('click', '.spud-post-url-name-regen', clickedUrlNameRegen);
+    $(".btn-preview").on('click', clickedPreviewButton);
   }
 };
 
 var clickedPostAddCategory = function(e){
   e.preventDefault();
@@ -87,8 +88,49 @@
   var string;
   string = title.toLowerCase();
   string = string.replace(/\s+/g, '-'); // replace spaces with dashes
   string = string.replace(/[^a-z0-9\-]+/g, ''); // remove symbols
   return string;
+};
+
+var clickedPreviewButton = function(e){
+  e.preventDefault();
+  var $button = $(this);
+  var $form = $button.parents('form');
+
+  // Build a temporary form
+  $previewForm = $('<form />', {
+    action: $form.data('previewAction'),
+    target: '_blank',
+    method: 'POST',
+    css: { display: 'none' }
+  });
+  $('body').append($previewForm);
+
+  // Tell tinymce to write out to the textarea
+  tinyMCE.triggerSave();
+
+  // Copy fields into our temp form
+  $form.find('input, select, textarea').each(function(i, el){
+    var input = document.createElement('input');
+    input.name = el.name;
+    input.value = el.value;
+    $previewForm.append(input);
+  });
+
+  // Cross site scripting tag
+  var csrf = document.createElement('input');
+  csrf.name = 'authenticity_token';
+  csrf.value = tb.util.getCsrfToken();
+  $previewForm.append(csrf);
+
+  // Submit it
+  $button.button('loading');
+  $previewForm.submit();
+
+  setTimeout(function(){
+    $previewForm.remove();
+    $button.button('reset');
+  }, 2000);
 };
 
 })();