how to deep clone JSON to a class

Question

I have a JSON object and I need to parse it to a class instance. The JSON object can be really large, and I need to execute methods from the classes within.

I tried Object.assign and the Lodash API. The Lodash API is the best approach with the merge or mergeWith function, but I came to an impasse when the class property is an array. Even with the Lodash I have to initialize the properties from the class (Which I don't like but if I have to I'll do it).

I used this post Deep Cloning in Actionscript and this Deep clone class instance JavaScript

and nothing seems to do what I really want.

Here is the stackblitz https://stackblitz.com/edit/angular-1rva1k

I need to be able to execute methods from the classes within.

Thanks for your help.

I think [class-transformer](https://github.com/typestack/class-transformer) is what you're looking for — Michael Desigaud, Oct 25 '19 at 15:36

score 0 · Accepted Answer · answered Oct 28 '19 at 18:01

0

As @MichaelDesigaud sugested, I used the class-transformer. Sorry, I don't how to mark a comment as an answer.

answered Oct 28 '19 at 18:01

Luislode

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score -1 · Answer 2 · answered Oct 25 '19 at 15:58

-1

"I have a json object and i need to parse it to a class instance." => have you tried JSON.parse(jsonObject) ?

answered Oct 25 '19 at 15:58

Leong

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this will not produce a class instance, just a javascript object – Michael Desigaud Oct 25 '19 at 15:59
`html` this.service.getComment().subscribe((comment: IComment) => { this.comments.push(comment); }); `html` – Leong Oct 25 '19 at 16:06
your code does not produce a deep class instance object – Michael Desigaud Oct 25 '19 at 16:32

how to deep clone JSON to a class

2 Answers2