因此,当我编辑现有项目时,我能够正确验证。但是,如果我想创建,由于某种原因验证不会被启动。相反,我看到以下错误:
//this is if the field I want to validate is empty
Uncaught TypeError: Object #<Object> has no method 'get'
//this is if everything in the form is filled out
Uncaught TypeError: Cannot call method 'trigger' of undefined
这是(我认为)我的js的相对部分。对不起,如果超载,我想尽可能多地添加:
Comic = Backbone.Model.extend({
initialize: function () {
this.bind("error", this.notifyCollectionError);
this.bind("change", this.notifyCollectionChange);
},
idAttribute: "ComicID",
url: function () {
return this.isNew() ? "/comics/create" : "/comics/edit/" + this.get("ComicID");
},
validate: function (atts) {
if ("Name" in atts & !atts.Name) {
return "Name is required";
}
if ("Publisher" in atts & !atts.Publisher) {
return "Publisher is required";
}
},
notifyCollectionError: function (model, error) {
this.collection.trigger("itemError", error);
},
notifyCollectionChange: function () {
this.collection.trigger("itemChanged", this);
}
});
Comics = Backbone.Collection.extend({
model: Comic,
url: "/comics/comics"
});
comics = new Comics();
FormView = Backbone.View.extend({
initialize: function () {
_.bindAll(this, "render");
this.template = $("#comicsFormTemplate");
},
events: {
"change input": "updateModel",
"submit #comicsForm": "save"
},
save: function () {
this.model.save(
this.model.attributes,
{
success: function (model, response) {
model.collection.trigger("itemSaved", model);
},
error: function (model, response) {
model.trigger("itemError", "There was a problem saving " + model.get("Name"));
}
}
);
return false;
},
updateModel: function (evt) {
var field = $(evt.currentTarget);
var data = {};
var key = field.attr('ID');
var val = field.val();
data[key] = val;
if (!this.model.set(data)) {
//reset the form field
field.val(this.model.get(key));
}
},
render: function () {
var html = this.template.tmpl(this.model.toJSON());
$(this.el).html(html);
$(".datepicker").datepicker();
return this;
}
});
NotifierView = Backbone.View.extend({
initialize: function () {
this.template = $("#notifierTemplate");
this.className = "success";
this.message = "Success";
_.bindAll(this, "render", "notifySave", "notifyError");
comics.bind("itemSaved", this.notifySave);
comics.bind("itemError", this.notifyError);
},
events: {
"click": "goAway"
},
goAway: function () {
$(this.el).delay(0).fadeOut();
},
notifySave: function (model) {
this.message = model.get("Name") + " saved";
this.render();
},
notifyError: function (message) {
this.message = message;
this.className = "error";
this.render();
},
render: function () {
var html = this.template.tmpl({ message: this.message, className: this.className });
$(this.el).html(html);
return this;
}
});
var ComicsAdmin = Backbone.Router.extend({
initialize: function () {
listView = new ListView({ collection: comics, el: "#comic-list" });
formView = new FormView({ el: "#comic-form" });
notifierView = new NotifierView({el: "#notifications" });
},
routes: {
"": "index",
"edit/:id": "edit",
"create": "create"
},
index: function () {
listView.render();
},
edit: function (id) {
listView.render();
$(notifierView.el).empty();
$(formView.el).empty();
var model = comics.get(id);
formView.model = model;
formView.render();
},
create: function () {
var model = new Comic();
listView.render();
$(notifierView.el).empty();
$(formView.el).empty();
formView.model = model;
formView.render();
}
});
jQuery(function () {
comics.fetch({
success: function () {
window.app = new ComicsAdmin();
Backbone.history.start();
},
error: function () {
}
});
})
那么,我的创作是否也应该得到验证?为什么不呢?
答案 0 :(得分:4)
创建模型的新实例时,不会调用validate方法。根据主干documentation,仅在设置或保存之前调用验证。
我也在努力解决这个问题,并在相关问题中找到解决方案:
我对这些解决方案并不完全满意,因为在触发错误时不应该创建骨干documentation中描述的模型的新实例。不幸的是,在这两种解决方案中,你仍然坚持使用该模型的新实例。
编辑:坚持使用模型的新实例实际上非常好。通过这种方式,您可以向用户提供有关未通过验证器的原因的反馈,并有机会更正他/她的输入。
答案 1 :(得分:2)
行。所以,我在这里取得了一些成功。
首先,我编写了自己的验证框架Backbone.Validator,因为我不喜欢我找到的任何一个。
其次,通过在silent: false
创建期间提供的对象中设置new Model
,我可以获得验证框架以启动验证例程。
除了使用验证框架中的use_defaults
参数外,我还能够在初始测试中设置时覆盖错误数据。我还在努力对此进行更多测试,但是从Chrome浏览器控制台看起来似乎没问题。