CODEWITHSUNDEEP
jsontypescript
user1935987
user1935987

Reputation: 3347

parse json response to typescript class

i know there are multiple similar topics, however trying their solutions doesn't give me expected result.

Input json string 

data:"{"message": "{\"type\":\"CONTROL\",\"command\":\"REQUEST_STATUS_ALL\"}"}"

object declaration/parse:

const msg: Message = <Message>JSON.parse(data.data);

output: 

{message: "{"type":"CONTROL","command":"REQUEST_STATUS_ALL"}"}

-values are not properly assigned, but instead in a text form.

the same object looks like this if it's initialized manually(in TS):

Message {type: "CONTROL", status: undefined, command: "REQUEST_STATUS_ALL", body: undefined}

What is the correct way to parse that json string into the Message object?

Thank you!

Upvotes: 0

Views: 1357

Answers (1)

Daniel Gimenez
Daniel Gimenez

Reputation: 20494

It seems the value for message was improperly encoded as a string. Calling JSON.parse a second time on the message property will get the result you want, though you might want to fix the underlying cause of the improperly encoded data instead.

parseMessage(data: string) {
   const msgTemp = JSON.parse(data);
   msgTemp.message = JSON.parse(msgTemp.message);
   return <Message>msgTemp;
}

const msg = parseMessage(data.data);

Upvotes: 1

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