javascript - How can I save a collection, or atleast a portion of it, in backbone.js -


i need maintain order of models in collection in model , able save server. know can save individual models, when save "parent model" contains collection attribute holding collection saved.

is there way this? below code. , know isn't best, still learning.

<!doctype html> <html> <head>     <meta http-equiv="content-type" content="text/html;charset=utf-8" />     <script type="text/javascript" src="jquery.js"></script>     <script type="text/javascript" src="jquery-ui.js"></script>     <script type="text/javascript" src="json2.js"></script>     <script type="text/javascript" src="underscore-min.js"></script>     <script type="text/javascript" src="backbone-min.js"></script>     <script type="text/javascript">         $(function() {             var wo = backbone.model.extend({                 wonum: null,                 part: null,                 desc: null,                 initialize: function()                 {                     this.url = '/rest/wo/'+this.get('wonum');                 }             });              var woview = backbone.view.extend({                 tagname: "tr",                 classname: "wo",                 initialize: function(options)                 {                     this.render = _.bind(this.render, this);                 },                 render: function()                 {                     $(this.el).html("<td>"+this.model.get('wonum')+"</td><td>"+this.model.get('part')+"</td><td>"+this.model.get('desc')+"</td>");                     return this;                 }             });               var wos = backbone.collection.extend({                 model: wo,                 url: '/rest/section/wos/'             });              var section = backbone.model.extend({                 defaults: {                     name : "section"                 },                 wos: [],                 url: '/rest/section/',                 initialize: function()                 {                     this.wos = new wos();                     this.wos.url += this.id;                     this.url += this.id;                 }             });              var sectionview = backbone.view.extend({                 tagname: "table",                 initialize: function()                 {                     _(this).bindall('add','remove');                     var = this;                     this._woviews = [];                      this.model.wos.each(this.add);                      this.model.wos.bind('add', this.add);                 },                 add: function(woobj)                 {                     var wov = new woview({                         model: woobj,                         id: woobj.get('wonum')});                     this._woviews.push(wov);                     if(this._rendered)                         $(this.el).append(wov.render().el);                     this.model.save();                 },                 render: function()                 {                     this._rendered = true;                     var = this;                     $(this.el).empty();                     $(this.el).append("<thead><th>wo</th><th>part</th><th>desc</th></thead>");                     $(this.el).append("<tbody>");                     _(this._woviews).each(function(wov)                     {                         $(that.el).append(wov.render().el);                     });                     $(this.el).append("</tbody>");                     return this;                 }             });              var sec = new section({id: 1});             sec.wos.add({                 wonum: 1001,                 part: 'p1001',                 desc: 'd1001'});             sec.wos.add({                 wonum: 1002,                 part: 'p1002',                 desc: 'd1002'});             var secv = new sectionview({model: sec, id: sec.get('id')});             $("body").append(secv.render().el);             $("#addwo").bind("click",function()             {                 secv.add(new wo({                     wonum: 1005,                     part: 'p1005',                     desc: 'd1005'}));             });         });     </script> </head> <body> <button id='addwo'>add wo</button> </body> </html>

i consider using collection's comparator function (which can set) preserve order of collection. comparator potentially use property of models; instance, model's name or position property.

using approach, save each model independently, have collection potentially refresh (where use comparator preserve desired order).


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