我尝试使用backone.localStorage将模型存储到本地存储中。不幸的是，没有任何东西被存储。
据我所知，该集合只需要一行
localStorage: new Backbone.LocalStorage("days")
但这并没有帮助。如果我使用Chrome开发工具检查localStorage，则不会存储任何内容。
这是我的代码：
// Filename: app.js
define([
'jquery',
'underscore',
'backbone',
'localStorage'
], function($, _, Backbone){
var initialize = function(){
(function ($) {
var Day = Backbone.Model.extend({
initialize: function() {
this.on("change", this.calculateWorkTime);
this.calculateWorkTime();
},
defaults: {
"date": new Date(),
"fromAm": 0,
"toAm": 0,
"fromPm": 0,
"toPm": 0,
"workTime": 0
},
isValidTime: function(n) {
return !isNaN(parseFloat(n)) && isFinite(n) && parseFloat(n)>0;
},
calculateWorkTime: function() {
var work = 0.0;
if (timeToFloat(this.get("fromAm")) < timeToFloat(this.get("toAm")) ) {
work += timeToFloat(this.get("toAm")) - timeToFloat(this.get("fromAm"));
}
if (timeToFloat(this.get("fromPm")) < timeToFloat(this.get("toPm")) ) {
work += timeToFloat(this.get("toPm")) - timeToFloat(this.get("fromPm"));
}
this.set("workTime", floatToTime(work));
}
});
var DayList = Backbone.Collection.extend({
model: Day,
localStorage: new Backbone.LocalStorage("days")
});
var DataRow = Backbone.View.extend({
tagName: "tr",
template: _.template($('#table-row-day').html()),
events: {
"change .edit-field": "updateModel",
"click #button-delete-day": "deleteDay"
},
initialize: function() {
this.listenTo(this.model, 'destroy', this.remove);
},
render: function() {
this.$el.html(this.template(this.model.toJSON()));
return this;
},
updateModel: function(event) {
var myValue = "leer";
switch (event.currentTarget.id) {
case "table-edit-date":
myValue = this.$('#table-edit-date').val();
this.model.set("date", myValue);
break;
case "table-edit-fromAm":
myValue = this.$('#table-edit-fromAm').val();
this.model.set("fromAm", myValue);
break;
case "table-edit-toAm":
myValue = this.$('#table-edit-toAm').val();
this.model.set("toAm", myValue);
break;
case "table-edit-fromPm":
myValue = this.$('#table-edit-fromPm').val();
this.model.set("fromPm", myValue);
break;
case "table-edit-toPm":
myValue = this.$('#table-edit-toPm').val();
this.model.set("toPm", myValue);
break;
}
this.render();
console.log(this.model.toJSON());
},
deleteDay: function(a, b, c, d) {
this.model.destroy();
}
});
var Days = new DayList;
AppView = Backbone.View.extend({
el: $("body"),
initialize: function () {
this.listenTo(Days, 'add', this.addOne);
this.listenTo(Days, 'all', this.refreshTotal);
this.total = this.$("#total-work");
Days.fetch();
this.refreshTotal();
},
events: {
"click #button-add-day": "addDay"
},
addDay: function () {
var day = new Day({
"date": $("#form-add-date").val(),
"fromAm": $("#form-add-fromAm").val(),
"toAm": $("#form-add-toAm").val(),
"fromPm": $("#form-add-fromPm").val(),
"toPm": $("#form-add-toPm").val()
});
Days.add(day);
},
addOne: function(day) {
var view = new DataRow({model: day});
this.$("#table-body-days").append(view.render().el);
},
refreshTotal: function() {
var work = 0;
Days.each(function($i) {
work += timeToFloat($i.get("workTime"));
});
this.total.html(floatToTime(work));
}
});
function timeToFloat(time) {
var parts = time.split(":");
if (parts.length<2) return 0.0;
return parseFloat(parts[0])+parseFloat(parts[1])/60;
}
function floatToTime(floatValue) {
var fraction = floatValue - Math.floor(floatValue);
var whole = Math.floor(floatValue);
return whole+":"+Math.round(fraction*60.0);
}
var appview = new AppView;
})($);
};
return {
initialize: initialize
};
});
答案 0 :(得分：0)
正如评论指出的那样，保存的呼叫缺失。我已将其添加到DataRow.updateModel()和AppView.addDay()。
这是正确的代码：
// Filename: app.js
define([
'jquery',
'underscore',
'backbone',
'localStorage'
], function($, _, Backbone){
var initialize = function(){
(function ($) {
var Day = Backbone.Model.extend({
initialize: function() {
this.on("change", this.calculateWorkTime);
this.calculateWorkTime();
},
defaults: {
"date": new Date(),
"fromAm": 0,
"toAm": 0,
"fromPm": 0,
"toPm": 0,
"workTime": 0
},
isValidTime: function(n) {
return !isNaN(parseFloat(n)) && isFinite(n) && parseFloat(n)>0;
},
calculateWorkTime: function() {
var work = 0.0;
if (timeToFloat(this.get("fromAm")) < timeToFloat(this.get("toAm")) ) {
work += timeToFloat(this.get("toAm")) - timeToFloat(this.get("fromAm"));
}
if (timeToFloat(this.get("fromPm")) < timeToFloat(this.get("toPm")) ) {
work += timeToFloat(this.get("toPm")) - timeToFloat(this.get("fromPm"));
}
this.set("workTime", floatToTime(work));
}
});
var DayList = Backbone.Collection.extend({
model: Day,
localStorage: new Backbone.LocalStorage("days")
});
var DataRow = Backbone.View.extend({
tagName: "tr",
template: _.template($('#table-row-day').html()),
events: {
"change .edit-field": "updateModel",
"click #button-delete-day": "deleteDay"
},
initialize: function() {
this.listenTo(this.model, 'destroy', this.remove);
},
render: function() {
this.$el.html(this.template(this.model.toJSON()));
return this;
},
updateModel: function(event) {
var myValue = "leer";
switch (event.currentTarget.id) {
case "table-edit-date":
myValue = this.$('#table-edit-date').val();
this.model.set("date", myValue);
break;
case "table-edit-fromAm":
myValue = this.$('#table-edit-fromAm').val();
this.model.set("fromAm", myValue);
break;
case "table-edit-toAm":
myValue = this.$('#table-edit-toAm').val();
this.model.set("toAm", myValue);
break;
case "table-edit-fromPm":
myValue = this.$('#table-edit-fromPm').val();
this.model.set("fromPm", myValue);
break;
case "table-edit-toPm":
myValue = this.$('#table-edit-toPm').val();
this.model.set("toPm", myValue);
break;
}
this.model.save();
this.render();
console.log(this.model.toJSON());
},
deleteDay: function(a, b, c, d) {
this.model.destroy();
}
});
var Days = new DayList;
AppView = Backbone.View.extend({
el: $("body"),
initialize: function () {
this.listenTo(Days, 'add', this.addOne);
this.listenTo(Days, 'all', this.refreshTotal);
this.total = this.$("#total-work");
Days.fetch();
this.refreshTotal();
},
events: {
"click #button-add-day": "addDay"
},
addDay: function () {
var day = new Day({
"date": $("#form-add-date").val(),
"fromAm": $("#form-add-fromAm").val(),
"toAm": $("#form-add-toAm").val(),
"fromPm": $("#form-add-fromPm").val(),
"toPm": $("#form-add-toPm").val()
});
Days.add(day);
day.save();
},
addOne: function(day) {
var view = new DataRow({model: day});
this.$("#table-body-days").append(view.render().el);
},
refreshTotal: function() {
var work = 0;
Days.each(function($i) {
work += timeToFloat($i.get("workTime"));
});
this.total.html(floatToTime(work));
}
});
function timeToFloat(time) {
var parts = time.split(":");
if (parts.length<2) return 0.0;
return parseFloat(parts[0])+parseFloat(parts[1])/60;
}
function floatToTime(floatValue) {
var fraction = floatValue - Math.floor(floatValue);
var whole = Math.floor(floatValue);
return whole+":"+Math.round(fraction*60.0);
}
var appview = new AppView;
})($);
};
return {
initialize: initialize
};
});