我有一个包含CellModels的CellCollection的BoardView.我从数据库获取集合,然后创建CellViews.
这一切都在游泳,直到我尝试通过BoardView上的点击事件访问CellModel.我根本不能看到底层的模型…只有视图.有没有办法做到这一点？@H_404_3@
CellModel = Backbone.Model.extend({});
CellCollection = Backbone.Collection.extend({
model : CellModel
});
CellView = Backbone.View.extend({
className : 'cell',});
BoardView = Backbone.View.extend({
this.model.cells = new CellCollection();
render : function() {
this.cellList = this.$('.cells');
return this;
},allCells : function(cells) {
this.cellList.html('');
this.model.cells.each(this.addCell);
return this;
},addCell : function(cell) {
var view = new Views.CellView({
model : cell
}).render();
this.cellList.append(view.el);
},events : {
'click .cell' : 'analyzeCellClick',},analyzeCellClick : function(e) {
// ?????????
}
});
我需要点击“发生”在BoardView,而不是CellView,因为它涉及到板专用的逻辑.@H_404_3@
解决方法
我可以想到这里至少可以使用两种方法：
>在初始化时将BoardView传递给CellView,然后处理CellView中的事件：@H_404_3@
var CellView = Backbone.View.extend({
className : 'cell',initialize: function(opts) {
this.parent = opts.parent
},events : {
'click' : 'analyzeCellClick',analyzeCellClick : function() {
// pass the relevant CellModel to the BoardView
this.parent.analyzeCellClick(this.model);
}
});
var BoardView = Backbone.View.extend({
// ...
addCell : function(cell) {
var view = new Views.CellView({
model : cell,parent : this
}).render();
this.cellList.append(view.el);
},analyzeCellClick : function(cell) {
// do something with cell
}
});
这样做会有效果,但是我更喜欢没有意见调用对方的方法,因为它使它们更紧密地耦合.
>当您渲染它时,将CellModel id附加到DOM：@H_404_3@
var CellView = Backbone.View.extend({
className : 'cell',render: function() {
$(this.el).data('cellId',this.model.id)
// I assume you're doing other render stuff here as well
}
});
var BoardView = Backbone.View.extend({
// ...
analyzeCellClick : function(evt) {
var cellId = $(evt.target).data('cellId'),cell = this.model.cells.get(cellId);
// do something with cell
}
});
这可能有点清洁,因为它避免了上述紧耦合,但我认为任何一种方式都可以工作.@H_404_3@
