League of Extraordinary FoundryVTT Developers•11mo ago

Minimise Document using Prototype

Quick question, I've got no idea what I'm doing so please excuse my ineptitude. Say I have a document, e.g. a wall:

{
  "light": 20,
  "sight": 20,
  "sound": 20,
  "move": 30,
  "c": [
    840,
    201,
    630,
    201
  ],
  "_id": "IHq9JaSNgKneTEsm",
  "dir": 0,
  "door": 0,
  "ds": 0,
  "threshold": {
    "light": null,
    "sight": null,
    "sound": null,
    "attenuation": false
  },
  "flags": {}
}

{
  "light": 20,
  "sight": 20,
  "sound": 20,
  "move": 30,
  "c": [
    840,
    201,
    630,
    201
  ],
  "_id": "IHq9JaSNgKneTEsm",
  "dir": 0,
  "door": 0,
  "ds": 0,
  "threshold": {
    "light": null,
    "sight": null,
    "sound": null,
    "attenuation": false
  },
  "flags": {}
}

But I want to minimise it down to only the changed data from the defaults. I can check the defaults in WallDocument.prototype.constructor._schema.fields There I see that light always has an initial value of 20 so we can remove that. We also bin off the _id as we know we'll get a new one. A simplified object for this example would then be:

{
  "move": 30,
  "c": [
    840,
    201,
    630,
    201
  ]
}

{
  "move": 30,
  "c": [
    840,
    201,
    630,
    201
  ]
}

Is there a trivial/simple way to use the wall prototype to reduce full data to just the non-default fields?

Solution:

From a post elsewhere:

foundry.utils.diffObject(WallDocument.prototype.constructor._schema.initial(),canvas.walls.placeables[0].document.toObject(), {inner: true})

...

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2 Replies

LyraOP•11mo ago

Thanks @theripper93

Solution

Lyra•11mo ago

From a post elsewhere:

foundry.utils.diffObject(WallDocument.prototype.constructor._schema.initial(),canvas.walls.placeables[0].document.toObject(), {inner: true})

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Minimise Document using Prototype