rtl support based on element's name naming convention (append `_ar` to the name of elements you wish to change their direction)

rtl support for arabic language

$(function() {
        $('textarea').each(function(index, obj) {
            if(obj.name.indexOf('_ar') != -1) {
                tinymce.init({selector: "[name="+ obj.name + "]", 'directionality': 'rtl'});
            } else {
                tinymce.init({selector: "[name="+ obj.name + "]", 'directionality': 'ltr'});
            }
        });
    });