小编d4k*_*ris的帖子

我需要在服务器的所有响应中捕获可能的登录页面,因此我全局覆盖了Backbone.sync,因此我可以在传递之前检查所有错误.

Backbone.originalSync = Backbone.sync;

Backbone.sync = function (method, model, options) {
    var originalSuccess, originalError;
    console.log("sync override...");
    // remember original success so we can call it if user logs in successfully
    originalSuccess = options.success;
    // proxy the error callback to first check if we get a login page back
    originalError = options.error;
    options.error = function (model, xhr, options) {
        if (xhr.status === 200 && xhr.responseText === "") {
            // parse error from empty response (jq1.9 invalid json, ok)
            originalSuccess(model, xhr, options); …