Backbone.js添加事件问题
我有下面的backbone.js代码,在从集合中获取“add”事件之前,我在该事件中遇到了一个问题。添加Backbone.js添加事件问题,backbone.js,Backbone.js,我有下面的backbone.js代码,在从集合中获取“add”事件之前,我在该事件中遇到了一个问题。添加this.field.add(列表字段)导致错误。如何确保获取模型,然后运行add事件 $(function() { $(".chzn-select").chosen(); /*********************************Models*************************************************/
this.field.add(列表字段)success:
fetch中的code>导致错误。如何确保获取模型,然后运行add事件
$(function() {
$(".chzn-select").chosen();
/*********************************Models*************************************************/
var Table = Backbone.Model.extend({
urlRoot : '/campusfeed/index.php/welcome/generate'
});
var Field = Backbone.Model.extend({
urlRoot: '/campusfeed/index.php/welcome/generate'
});
/**************************Collections*************************************************/
Tables = Backbone.Collection.extend({
//This is our Friends collection and holds our Friend models
initialize : function(models, options) {
this.bind("add", options.view.addFriendLi);
//Listen for new additions to the collection and call a view function if so
}
});
var Fields = Backbone.Collection.extend({
model:Field,
url:'http://localhost/campusfeed/index.php/welcome/generateFields',
initialize : function(models, options) {
this.bind("add", options.view.getFields);
}
});
/************************************Views**************************************************/
var m="shit";
var app = Backbone.View.extend({
el:'body',
initialize:function(model,options){
//Create collections in here
this.table = new Tables(null,{
view : this
});
this.field = new Fields(null,{
view : this
});
},
events : {
"click #choose" : "generate"
},
generate:function(){
var table = ( this.$("#table option:selected").text());
var dbname = ( this.$("#database").text());
var list_fields = new Field();
list_fields.urlRoot = list_fields.urlRoot+"/"+dbname+"/"+table;
list_fields.fetch({
success:function(){
console.log(JSON.stringify(list_fields));
}
});
this.field.add(list_fields);
},
getFields:function(model){
console.log(JSON.stringify(model));
}
});
var apprun = new app;
/* var data = new Fields();
data.url=data.url+"/some/data";
alert(data.url);
data.fetch();
var staff = new Table();
staff.fetch();
var field = new Field();*/
});
问题在于“这个”的背景。成功回调函数将“this”设置为列表字段。您可以使用“self”或“that”变量来解决此问题:
generate:function(){
var table = ( this.$("#table option:selected").text());
var dbname = ( this.$("#database").text());
var list_fields = new Field();
list_fields.urlRoot = list_fields.urlRoot+"/"+dbname+"/"+table;
var that = this;
list_fields.fetch({
success:function(){
console.log(JSON.stringify(list_fields));
that.field.add(list_fields);
}
});
},
作为旁注-您的集合不应该引用视图。相反,视图应该引用集合并绑定到集合事件
var Fields = Backbone.Collection.extend({
model:Field,
url:'http://localhost/campusfeed/index.php/welcome/generateFields',
});
var app = Backbone.View.extend({
initialize:function(model,options){
//Create collections in here
this.field = new Fields();
this.field.bind("add", this.getFields, this);
},
getFields: function(){ ... }
});