我正在使用backbone.js创建一个联系人管理器,这是我的代码
$(document).ready(function() {
var Contact=Backbone.Model.extend({
defaults: {
fname : '',
lname : '',
phoneno : ''
}
});
var ContactList=Backbone.Collection.extend({
model : Contact,
localStorage: new Store("ContactList-backbone")
});
var ContactView=Backbone.View.extend({
el : $('div#contactmanager'),
events: {
'click #additems' : 'add'
},
initialize: function() {
this.render();
this.collection = new ContactList();
},
add : function() {
s1=$('#fname').val();
s2=$('#lname').val();
s3=$('#phoneno').val();
if(s1 =="" || s2=="" || s3=="")
{
alert("Enter values in Textfield");
}
else
{
$('#tlist').append("<tr><td>"+s1+"</td><td>"+s2+"</td><td>"+s3+"</td> </tr>");
cont=new Contact({fname:s1,lname:s2,phoneno:s3});
this.collection.add(cont);
cont.save();
}
},
render : function() {
$(this.el).append("<label><b>First Name</b></label><input id= 'fname' type='text' placeholder='Write ur first name'></input>");
$(this.el).append("<br><label><b>Last Name</b></label><input id= 'lname' type='text' placeholder='Write ur last name'></input>");
$(this.el).append("<br><label><b>Phone Number</b></label><input id= 'phoneno' type='text' placeholder='Write ur phone number'></input>");
$(this.el).append("<br><button id='additems'>ADD</button>");
var showdata=localStorage.getItem('ContactList-backbone',this.model);
console.log(showdata,"showdata");
}
return this;
},
});
var contactManager=new ContactView();
});
这就是我使用localstorage的方式
function S4() {
return (((1+Math.random())*0x10000)|0).toString(16).substring(1);
};
function guid() {
return (S4());
};
var Store = function(name)
{
this.name = name;
var store = localStorage.getItem(this.name);
this.data = (store && JSON.parse(store)) || {};
};
_.extend(Store.prototype,
{
save: function() {
localStorage.setItem(this.name, JSON.stringify(this.data));
},
create: function(model) {
if (!model.id) model.id = model.attributes.id = guid();
this.data[model.id] = model;
this.save();
return model;
},
Backbone.sync = function(method, model, options) {
var resp;
var store = model.localStorage || model.collection.localStorage;
switch (method) {
case "create": resp = store.create(model); break;
//I am using only create
}
if (resp) {
options.success(resp);
}
else {
options.error("Record not found");
}
};
数据存储在本地存储中。 但是,当页面被重新播放时,我无法弄清楚如何在我的表中显示这些数据。 例如:Iwant在表格中显示名字,姓名和电话号码; 我是骨干的新手,所以PLZ帮助我
答案 0 :(得分:0)
因为您只使用create
,所以您永远不会点击read
。通过添加read
方法
switch (method)
{
case "read":
resp = model.id != undefined ? store.find(model) : store.findAll();
break;
case "create":
resp = store.create(model);
break;
}
答案 1 :(得分:0)
基本上你需要绑定你的集合中的add事件,它将被添加到集合中的每个项目调用,然后在函数中绑定它以添加代码以将行添加到表中。此外,您还需要删除当前添加方法中添加行的代码,因为现在将项目添加到您的集合时会生成该代码。
使用您的代码作为
的基础var ContactView=Backbone.View.extend({
el : $('div#contactmanager'),
events: {
'click #additems' : 'add'
},
initialize: function() {
this.render();
this.collection = new ContactList();
this.collection.bind('add', this.addContact, this);
},
addContact: function(contact) {
//this will get called when reading from local storage as well as when you just add a
//model to the collection
$('#table').append($('<tr><td>' + contect.get('name') + </td></tr>'));
}
另一点是你的页面上已经有了underscore.js(因为它需要backbone.js)你可能需要考虑移动代码来生成html到underscore.js模板。 http://documentcloud.github.com/underscore/#template