cleanup5

app/assets/javascripts/application.js

@@ -24,6 +24,4 @@
 //= require bootstrap_pagedown
 //= require markdown.converter
 //= require markdown.sanitizer
-//= require markdown.editor
-
-
+//= require markdown.editor

app/assets/javascripts/markdown_ace_editor.js

@@ -0,0 +1,16 @@
+(function() {
+    var ACE_FILES_PATH = '/assets/ace/';
+    
+    window.MarkdownEditor = function(selector) {
+        ace.config.set('modePath', ACE_FILES_PATH);
+        var editor = ace.edit($(selector).next()[0]);
+        editor.on('change', function() {
+            $(selector).val(editor.getValue());
+        });
+        editor.setShowPrintMargin(false);
+        var session = editor.getSession();
+        session.setMode('markdown');
+        session.setUseWrapMode(true);
+        session.setValue($(selector).val());
+    };
+})();

app/views/exercises/_test.html.slim

@@ -0,0 +1,12 @@
+- execution_environments = ExecutionEnvironment.where('file_type_id IS NOT NULL').select(:file_type_id, :id)
+- file_types = FileType.where('file_extension IS NOT NULL').select(:file_extension, :id)
+
+= form_for(@exercise, data: {execution_environments: execution_environments, file_types: file_types}, multipart: true) do |f|
+  .form-group
+    = f.label(:description)
+    = f.hidden_field(:description)
+    .form-control.markdown
+
+    = f.pagedown_editor :description
+    /= f.input :description, :as => :pagedown, :input_html => { :preview => true }
+end