can I use JSON-Patch for array this way?

[beetaa]

assume that there's an object like:

var obj_src = {
  name: "jone",
  city: "Sydney",
  pets: [
    {nickname: "volo", category: "dog", age: "3"},
    {nickname: "wabit", category: "cat", age: "5"},
    {nickname: "moaoaa", category: "tiger", age: "1"},
    {nickname: "gofast", category: "lion", age: "3"}
  ]
}

if pets' nickname is unique, can I use patch like {op: "replace", path: "/pets[nickname=wabit]/age", value: "9"} to alter wabit's age instead using {op: "replace", path: "/pets/1/age", value: "9"} because sometimes I don't know the array order.

[Starcounter-Jack]

No. The JSON Patch behavior is standardized in RFC6902, so I'm afraid we cannot change the way replace patches work.

Sent from my iPhone

On 23 Mar 2015, at 11:14, beetaa notifications@github.com wrote:

assume that there's an object like:

var obj_src = { name: "jone", city: "Sydney", pets: [ {nickname: "volo", category: "dog", age: "3"}, {nickname: "wabit", category: "cat", age: "5"}, {nickname: "moaoaa", category: "tiger", age: "1"}, {nickname: "gofast", category: "lion", age: "3"} ] } if pets' nickname is unique, can I use patch like {op: "replace", path: "/pets[nickname=wabit]/age", value: "9"} to alter wabit's age instead using {op: "replace", path: "/pets/1/age", value: "9"} because sometimes I don't know the array order.

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[beetaa]

Thank you Jack, but how about extending RFC6902 some more features? just call RFC6902-x。

[tomalec]

I believe we should serve tiny lib that do one job, and do it well and blazing fast ;) With tiny support of jsonpointer #66, and native Array.prototype.filter I would suggest something like

var patch = [{op: "replace", path: "/age", value: "9"}];
var cssFilter = function(selector){
 return function(el, index){
   // do some nice CSS selector style filtering, or anything you want
 }
}
jsonpatch.apply( jsonpointer( obj_src, "/pets").filter(cssFilter("[nickname=wabit]")), patch);

Or write completely separated concept of JSON-CSS-Pointer (extended https://tools.ietf.org/html/rfc6901), and then use it like

var cssPatch = [{op: "replace", path: "/pets[nickname=wabit]/age", value: "9"}];
jsonpatch.apply( obj_src,  jsonCSSSelectorToPointer( obj_src, cssPatch ));

[beetaa]

wow! nice answer, @tomalec , thank you very much! I completely agree with your points.

[tomalec]

@beetaa Could we close this issue?

Feel free to vote, and comment at #66.