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@jjfajardo
Forked from gaspardzul/DjangoAjax.js
Last active September 5, 2015 16:53
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/**
* Este script de javascript permite trabajar transparentemente solicitudes que requieren
* protección del token CSRF por medio de AJAX JQUERY.
* Esto te permitirá hacer solcitudes a web Services de Django por medio de AJAX Jquery.
* Para utilizarlo basta con integrar el archivo DjangoAjax.js en tu directorio de JS y hacer referencia a él en tus templates
* que requieren del uso de AJAX por POST o algún otro que requiera el token CSRF.
* Este script está basado en la documentación oficial de Django https://docs.djangoproject.com
*/
$(function(){
//Obtenemos la información de csfrtoken que se almacena por cookies en el cliente
var csrftoken = getCookie('csrftoken');
//Agregamos en la configuración de la funcion $.ajax de Jquery lo siguiente:
$.ajaxSetup({
beforeSend: function(xhr, settings) {
if (!csrfSafeMethod(settings.type) && sameOrigin(settings.url)) {
// Send the token to same-origin, relative URLs only.
// Send the token only if the method warrants CSRF protection
// Using the CSRFToken value acquired earlier
xhr.setRequestHeader("X-CSRFToken", csrftoken);
}
}
});
function sameOrigin(url) {
// test that a given url is a same-origin URL
// url could be relative or scheme relative or absolute
var host = document.location.host; // host + port
var protocol = document.location.protocol;
var sr_origin = '//' + host;
var origin = protocol + sr_origin;
// Allow absolute or scheme relative URLs to same origin
return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
(url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
// or any other URL that isn't scheme relative or absolute i.e relative.
!(/^(\/\/|http:|https:).*/.test(url));
}
// using jQuery
function getCookie(name) {
var cookieValue = null;
if (document.cookie && document.cookie != '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i++) {
var cookie = jQuery.trim(cookies[i]);
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length + 1) == (name + '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
break;
}
}
}
return cookieValue;
}
function csrfSafeMethod(method) {
// these HTTP methods do not require CSRF protection
return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
});
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