ServerModel.coffee

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ServerModel.coffee
¶
```
Type = require('type-of-is')
```
¶

ServerModel
¶

Simple server-side model supporting basic deflate for transport and data access
```
class ServerModel
```
¶

@mixin

¶

use dotmix mixins https://github.com/stephenhandley/dotmix

  @mixin : (mixins)->
    unless Type(mixins, Array)
      mixins = [mixins]

    for mixin in mixins
      mixin.mix(into : @)

¶

@attrs
¶

Specifiy attributes in this schema
```
  @attrs : (attrs)->
```
¶

read
```
    unless attrs
      return @_attrs
```

¶

write

    @_attrs = attrs

    for attr in attrs
      do (attr)=>
        unless attr of @prototype
          Object.defineProperty(@prototype, attr, {
            get: ()->
              @_data[attr]

            set: (val)->
              @_data[attr] = val
          })

¶

constructor

¶

data : data for this model

  constructor : (data)->
    unless @constructor._attrs 
      throw new Error("Model #{@constructor.name} muse have attrs defined.")

    @_data = {}
    for k,v of data
      if k in @constructor._attrs
        @_data[k] = v

¶

deflate

¶

Called by server to create json object for transfer over the wire

required args

model_key : The attribute name used to hold the model’s constructor name to be used by inflate

optional args

attrs : Only include the specified attributes

  deflate : (args)->
    {model_key, attrs} = args

    data = if attrs
      _data = {}
      for k,v of @_data
        if k in attrs
          _data[k] = v
      _data

    else
      @_data

    data[model_key] = @constructor.name
    data

module.exports = ServerModel