PolymerFire - 如何保存文档?

PolymerFire - How to save document?

我正在尝试使用以下代码保存 Firebase 文档:

<dom-module id="my-view1">

<template>

    <firebase-document
        id="doc"
        app-name="manishkpr"
        data="{{category}}">

    </firebase-document>

    <paper-button class="font-normal" on-tap="save">save</paper-button>

</template>

<script>

 Polymer({
  is: 'my-view1',

  save:function (e) {
      this.$.doc.save("categories/",{ "name": 's' } );
  }

 });

</script>

我收到这个错误:

请帮帮我

我还没有设置这个。$doc.data = {name:'s'} @Dale Snowdon

建议

这是更新后的代码,运行良好

<dom-module id="my-view1">

<template>

<firebase-document
    id="doc"
    app-name="manishkpr"
    data="{{category}}">

</firebase-document>

<paper-button class="font-normal" on-tap="save">save</paper-button>

</template>

<script>

Polymer({
  is: 'my-view1',

  save:function (e) {
     this.$doc.data = {name:'s'};
     this.$.doc.save("categories/");
}

});

</script>