我有一个多对一的关系,我正在尝试用Backbone Forms建模,但我无法工作。
这个想法是有许多foo附加到一个条形图上。问题是每个酒吧必须至少有一个foo。我希望能够有一个单一的表单,在那里你可以创建一个栏,以及你想要的附加到该栏的任意多的foo。骨干表单列表将是完美的,不幸的是,我不知道如何用嵌套模型实现它。
谢谢。
我以前从未使用过Backbone Forms。但如果我想在不使用这个插件的情况下实现这一点,我会这样做。
我会有两个模型和两个系列。
型号
- 酒吧
- Foo
集合
- 条形图
- Foos
我会在Bar模型中有一个解析方法,为每个模型创建一个Foo集合。
视图
- 主视图(在条形图集合中传递)和渲染
- BarsListView(根据Bar集合中传递的MainView创建)
- BarView(传入的条形模型)
- FooListView(在Foo集合中传递)
- FooView(传入Foo模型)
这些行中的某些内容。。这只是的一个粗略示例
// Models
var Foo = Backbone.Model.extend({});
var Foos = Backbone.Collection.extend({
model : Foo
});
// Collections
var Bar = Backbone.Model.extend({
initialize: function() {
if(typeof this.foos === 'undefined') {
this.foos = new Foos();
}
},
// Parse method that will attach the
// foo list if available to the Bar Model
parse: function(resp) {
// Storing the collecting direcly on the Model
this.foos = new Foos(resp.hobbies || null);
delete resp.hobbies;
return resp;
}
});
var Bars = Backbone.Collection.extend({
model : Bar
});
//Views
var FooView = Backbone.View.extend({
tagName: 'li',
className : 'foo',
template: _.template($('#foo-template').html()),
render: function() {
this.$el.append(this.template(this.model.toJSON()));
return this;
}
});
var FooListView = Backbone.View.extend({
template: _.template($('#foo-list-template').html()),
initialize: function() {
this.listenTo(this.collection, 'add', this.renderFooView);
this.listenTo(this.collection, 'reset', this.render);
},
events:{
'click .add-foo' : 'addFoo'
},
addFoo: function() {
var newFoo = new Foo({
hobby : $('.foo-name', this.$el).val()
});
this.collection.add(newFoo);
},
renderFooView: function(foo) {
var fooView = new FooView({
model : foo
});
$('.foo-list', this.$el).append(fooView.el);
fooView.render();
},
render: function() {
var thisView = this;
this.$el.empty();
this.$el.append(this.template);
_.each(this.collection.models, function(foo) {
thisView.renderFooView(foo);
});
return this;
}
});
// Bar View
var BarView = Backbone.View.extend({
className: 'bar',
template: _.template($('#bar-template').html()),
renderFooListView: function() {
var fooListView = new FooListView({
el: $('.foo-container', this.$el),
collection : this.model.foos
});
fooListView.render();
},
render: function() {
this.$el.append(this.template(this.model.toJSON()));
this.renderFooListView();
return this;
}
});
// Bar List View
var BarListView = Backbone.View.extend({
template: _.template($('#bar-list-template').html()),
initialize: function() {
// Events on collection which will trigger the methods
this.listenTo(this.collection, 'add', this.renderBarView);
this.listenTo(this.collection, 'reset', this.render);
},
events: {
'click .add-bar' : 'addBar'
},
// Add a new Bar
addBar: function() {
var newBar = new Bar({
name : $('.bar-name', this.$el).val(),
age : $('.bar-age', this.$el).val()
});
this.collection.add(newBar);
},
// Render BarView for each Model in Bars Collection
renderBarView: function(bar) {
var barView = new BarView({
model : bar
});
$('.bar-container').append(barView.el);
barView.render();
},
render: function() {
var thisView = this;
this.$el.empty();
this.$el.append(this.template);
_.each(this.collection.models, function(bar) {
thisView.renderBarView(bar);
});
return this;
}
});
// Main View
// Renders the BarListView
var MainView = Backbone.View.extend({
el : $('.main'),
renderBarListView: function() {
var barListView = new BarListView({
collection : this.collection
});
this.$el.append(barListView.el);
barListView.render();
},
render: function() {
this.$el.empty();
this.renderBarListView();
return this;
}
});
// Initial obj
var obj = [{
"name" : "Brad",
"age": 15,
"hobbies" : [{"hobby":"play"}, {"hobby": "eat"}]
},{
"name" : "Micheal",
"age": 22,
"hobbies" : [{"hobby":"sit"}, {"hobby": "walk"}]
}];
// Bars collection and rendering of Main view
var bars = new Bars(obj, {parse : true});
var mainView = new MainView({
collection : bars
});
mainView.render();
检查Fiddle