一旦我弄清抛出的错误消息，答案就很容易.

The answer was easy once i've figured out the thrown error message.

/app/assets/javascript/ckeditor

CKEDITOR.editorConfig = function( config )
{
    config.toolbar_MyToolbar =
    [
        { name: 'document', items : [ 'NewPage','Preview' ] },
        { name: 'clipboard', items : [ 'Cut','Copy','Paste','PasteText','PasteFromWord','-','Undo','Redo' ] },
        { name: 'editing', items : [ 'Find','Replace','-','SelectAll','-','Scayt' ] },
        { name: 'insert', items : [ 'Image','Flash','Table','HorizontalRule','Smiley','SpecialChar','PageBreak'
                 ,'Iframe' ] },
                '/',
        { name: 'styles', items : [ 'Styles','Format' ] },
        { name: 'basicstyles', items : [ 'Bold','Italic','Strike','-','RemoveFormat' ] },
        { name: 'paragraph', items : [ 'NumberedList','BulletedList','-','Outdent','Indent','-','Blockquote' ] },
        { name: 'links', items : [ 'Link','Unlink','Anchor' ] },
        { name: 'tools', items : [ 'Maximize','-','About' ] }
    ];
}

这是重要的部分，在对ckeditor的需求之后 之后放置require_tree(包括ckeditor/config.js): /app/assets/javascript/application.js

This is the important part, place the require_tree (which includes the ckeditor/config.js) after the require for ckeditor: /app/assets/javascript/application.js

//= require jquery
//= require jquery_ujs
//= require ckeditor/ckeditor
//= require_tree .