275. Changing the Response Body Type

Jul 21, 2026 06:09 · 3:16 · English · Whisper Turbo · 2 스피커

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You can not only configure the observe mode

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here, you can also configure the response type.

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The default here is JSON,

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which means the response data,

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so the data in the body of your response is JSON,

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and that tells Angular that it should automatically parse it and convert

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it to a JavaScript object.

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You could,

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however, also tell Angular,

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the response type will be text,

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and please keep it as text,

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don't try to convert it to a JavaScript object.

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It could also be a blob if it is a file,

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for example.

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The official docs,

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of course,

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are the place where you can learn all about all available response types.

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So if we use text here and I add a new post here,

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oops,

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send it first,

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then you still see,

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of course, that I get null here because we had null before.

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And even if this is interpreted as a text,

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it still prints null.

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However, you can clearly see it is treated as a text because it

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is now wrapped in quotation marks before it was treated as the null

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object that exists in JavaScript.

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It becomes even clearer if we try using that here when

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we get posts.

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There,

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if I switch the response type to text,

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we'll see that our application even breaks because it won't work if

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we try to work with a text response.

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and i even get an error here because i am using that generic assignment

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here and i'm saying hey the data that is returned here is actually

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of type javascript object that in the end holds a nested post well

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typescript is smart and detects well if you tell me that

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my response data will be of that format then it needs to be convertible

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to a javascript object if you then also tell me

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that the response type down there is text,

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then you have to be lying somewhere because it can't be both.

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It can't be a string,

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which is simply not in that format and

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such a JavaScript object at the same time.

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So to make this work,

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we would have to get rid of that generic type assignment.

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And now we are allowed to save this.

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And now of course you see this breaks here.

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If I

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Try sending a post and I fetch my post it breaks and I just see these lines

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because my response here is in the end now treated

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as a text and not as a

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JavaScript object

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And actually here it even breaks because the way I try to handle this is not

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correct.

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So I will revert this and I will revert this back

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to JSON, which is the correct data type,

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which now works.

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But it is important to also be aware of this option,

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which you can use.

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to tell angular in case you are really getting back some text and you don't

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want angular to parse it to a javascript object or maybe you are

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getting back json but you still don't want to let angular parse it because you

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want to parse it on your own at a later point of time or anything like that for

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S… Speaker 2 (275. Changing the Response Body Type)

this you can set the response type the default is json

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S… Speaker 2 (275. Changing the Response Body Type)

and most of the time like in probably 99 of all cases

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this is the type you want to keep

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So typically, you don't need to overwrite that.

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