Question

我正在使用rocket_pants gem来构建后端API https://github.com/Sutto/rocket_pants

它具有输出数据的特定格式：

{ 
    "response":[
        {"id":1,"title":"Object Title","description":"Object Description"},
        {"id":1,"title":"Object Title","description":"Object Description"} ],
    "count":2,
    "pagination": {
          "previous":null,
           "next":null,
           "current":1,
           "per_page":30,
           "count":2,
           "pages":1}
}

我正在使用Batman.RailsStorage来保留模型。但是MyApp.Model.get('all')之类的操作在后端运行正常，但它们实际上并不解析和加载模型对象。

您能指导我如何配置StorageAdapter或编写新的处理此类数据格式吗？

Answer 1

您可以尝试覆盖collectionJsonNamespace method (defined on Batman.RestStorage)。

我看到从{HTTP}响应中获取记录是used after a readAll operation。

例如：

class MyApp.RocketPantsStorage extends Batman.RailsStorage
   collectionJsonNamespace: -> "response"

然后在你的模特中

#= require ../rocket_pants_storage
# the storage adapter must be available at load time
class MyApp.SomeModel 
   @persist MyApp.RocketPantsStorage

这有用吗？

Answer 2

使用@rmosolgo回答中提到的相同方法，我也构建了paginator。

class MyApp.RocketPantsPaginator extends Batman.ModelPaginator
  totalCountKey: "pagination.count"

  loadItemsForOffsetAndLimit: (offset, limit) ->
    params = @paramsForOffsetAndLimit(offset, limit)
    params[k] = v for k,v of @params
    @model.load params, (err, records, env) =>
      if err?
        @markAsFinishedLoading()
        @fire('error', err)
      else
        response = new Batman.Object(env.response)
        @set('totalCount', response.get(@totalCountKey));
        @updateCache(@offsetFromParams(params), @limitFromParams(params), records)

自定义适配器，支持Rocket的RocketPant

2 个答案: