我遇到一个与从编辑模式保存记录有关的问题。 的方案：
点击“保存”，将成功保存并刷新视图 但问题是它将用Row1和Row2替换更新的模型值。我想只更新选定的行。这段代码出了什么问题。
window.App = { Models: {}, Collections: {}, Views: {}, Helper: {} }
App.Helper.getFormsValue = function (form) {
var newName = form.find('.name').val();
var newAge = form.find('.age').val();
var newOccupation = form.find('.occupation').val();
return { name: newName, age: newAge, occupation: newOccupation };
}
模型和收藏
App.Models.Person = Backbone.Model.extend({
defaults: { name: '', age: 0, occupation: '' }
});
App.Collections.People = Backbone.Collection.extend({
model: App.Models.Person
});
添加人
App.Views.AddPerson = Backbone.View.extend({
el: '#addPersonWrapper',
events: {
'click .add': 'addPersonForm',
'click .save': 'addPerson'
},
addPersonForm: function (e) {
$(e.target).hide();
this.$el.find('.addPerson').show();
},
addPerson: function () {
var form = this.$el;
form.find('.addPerson').hide();
form.find('.add').show();
var person = new App.Models.Person(App.Helper.getFormsValue(form));
this.collection.add(person);
}
});
编辑人
App.Views.EditPerson = Backbone.View.extend({
el: '.editPersonWrapper',
template: template.get('editTemplate'),
initialize: function () {
this.$el.show();
this.rentder();
},
events: {
'click .save': 'savePerson'
},
rentder: function () {
this.$el.html(this.template(this.model.toJSON()));
},
savePerson: function () {
console.log(this.model.toJSON());
var form = this.$el;
this.model.set(App.Helper.getFormsValue(form));
this.$el.hide();
}
});
人物视图
App.Views.Person = Backbone.View.extend({
tagName: 'tr',
template: template.get('listTemplate'),
initialize: function () {
this.model.on("change", this.render, this);
this.model.on('destroy', this.remove, this);
this.on("edit", function (view) {
var editperson = new App.Views.EditPerson({ model: view.model });
}.bind(this));
},
events: {
'click .edit': 'editPerson',
'click .delete': 'deletePerson'
},
render: function () {
this.$el.html(this.template(this.model.toJSON()));
return this;
},
editPerson: function () {
this.trigger("edit", this);
},
deletePerson: function (e) {
this.model.destroy();
},
remove: function () {
this.$el.remove();
}
});
人物观看
App.Views.People = Backbone.View.extend({
el: '#personList',
initialize: function () {
this.collection.on("add", this.addPerson, this);
this.render();
},
render: function () {
this.collection.each(this.addPerson, this);
},
addPerson: function (person) {
var personView = new App.Views.Person({ model: person });
this.$el.append(personView.render().el);
}
});
默认数据
var peopleCollection = new App.Collections.People([
{ name: 'Imdadhusen', age: 31, occupation: 'M.C.A.' },
{ name: 'Manindar', age: 27, occupation: 'B.E.I.T.' },
{ name: 'Kuber', age: 32, occupation: 'M.S.C.I.T.' },
{ name: 'Rashidali', age: 5, occupation: 'S.K.G' }]);
var addPerson = new App.Views.AddPerson({ collection: peopleCollection });
var peopleView = new App.Views.People({ collection: peopleCollection });
HTML
<table border="0">
<thead>
<tr>
<th style="width: 180px">Name</th>
<th style="width: 50px">Age</th>
<th style="width: 120px">Occupation</th>
<th style="width: 50px"></th>
<th style="width: 50px"></th>
</tr>
</thead>
<tbody id="personList">
</tbody>
</table>
<div id="addPersonWrapper">
<div class="formRow">
<div class="left">
<input class="add" type="button" value="Add Person" />
</div>
<div class="clearall"></div>
</div>
<div class="addPerson">
<div class="formRow">
<div class="left">Person Name</div>
<div class="right">
<input class="name" type="text" placeholder="Name of the person" />
</div>
<div class="clearall"></div>
</div>
<div class="formRow">
<div class="left">Person Age</div>
<div class="right">
<input class="age" type="text" placeholder="Age of the person" />
</div>
<div class="clearall"></div>
</div>
<div class="formRow">
<div class="left">Person Occupation</div>
<div class="right">
<input class="occupation" type="text" placeholder="Occupation of the person" />
</div>
<div class="clearall"></div>
</div>
<div class="formRow">
<div class="left">
<input class="save" type="button" value="Save Person" />
</div>
<div class="clearall"></div>
</div>
</div>
</div>
<div class="editPersonWrapper">
</div>
列出模板
<script id="listTemplate" type="text/template">
<td><%= name %></td>
<td><%= age %></td>
<td><%= occupation %></td>
<td style="text-align:center"><a class="edit" href="#">Edit</a></td>
<td style="text-align:center"><a class="delete" href="#">Delete</a></td>
</script>
修改模板
<script id="editTemplate" type="text/template">
<h3>Edit Person</h3>
<div class="formRow">
<div class="left">Person Name</div>
<div class="right">
<input class="name" type="text" placeholder="Name of the person" value="<%= name %>" />
</div>
<div class="clearall"></div>
</div>
<div class="formRow">
<div class="left">Person Age</div>
<div class="right">
<input class="age" type="text" placeholder="Age of the person" value="<%= age %>"/>
</div>
<div class="clearall"></div>
</div>
<div class="formRow">
<div class="left">Person Occupation</div>
<div class="right">
<input class="occupation" type="text" placeholder="Occupation of the person" value="<%= occupation %>"/>
</div>
<div class="clearall"></div>
</div>
<div class="formRow">
<div class="left">
<input class="save" type="button" value="Save Person" />
</div>
<div class="clearall"></div>
</div>
</script>
任何人都可以帮助我找到问题的原因。任何评论和建议将受到高度赞赏！
答案 0 :(得分：2)
当用户点击保存时，您不会删除修改视图。我没有真正研究过您的HTML，但问题似乎是所有的编辑视图（我说全部因为您不会删除它们，因此它们会累积）共享相同的元素。因此，当用户单击以保存时，所有编辑视图都会捕获click事件，因此将修改应用于他们自己的模型。
要获得解决方案，请在删除编辑视图后再删除它们（this.remove();将会执行此操作，除非您必须处理删除元素的事实），要么使用单个编辑视图（肯定会要求您更改更多代码）。