Azure Function not returning response through context.res

Question

I'm trying to return a JSON object from Azure Function, and this examples, I mean, examples where response creation performing through context.res not working at all.

context.res = {
   body: {"name": "JSON STATHAM"}, //No. No mistake.
   contentType: 'application/json'
};

Why?

Only through context.done it's working if passed as a second parameter.

mathewc · Accepted Answer · 2017-03-02 16:23:07Z

5

Look at how your http output binding name property is specified. At one time our templates/samples were defaulting to using $return for the output binding name. Using $return that means the response is expected to be the return value from the function:

{
    "bindings": [
        {
            "type": "httpTrigger",
            "name": "req",
            "direction": "in",
            "methods": [ "get" ]
        },
        {
            "type": "http",
            "name": "$return",
            "direction": "out"
        }
    ]
}

In that mode, only the value returned via context.done (i.e. the function return value) will be used. Change $return to some other name of your choosing and you can use context.res.

edited Mar 2, 2017 at 16:23

answered Mar 2, 2017 at 16:17

mathewc

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1 Comment

Ilia Shakitko Over a year ago

I wish it wold be better documented. Thank you @mathewc.

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