What is the reason for AngularJS's inclusion of a colon at the end of a data object in an $http post

While attempting to utilize angular js $http for sending a post request to elasticSearch, I encounter an "Unexpected token : " Error.

Here is a snippet of my code:

var request= $http({
    method: "post",
    url: path,
    accept:"*/*",
    headers:{"Content-Type" : "application/x-www-form-urlencoded; charset: UTF-8"},
    data:{
         "query":{
               "fuzzy":{
                    "title":{
                        "value": $scope.searchTerm,
                        "fuzziness":"1"
                    }
                }
        },
        "highlight":{
            "fields":{
                "*":{}
            }
        }
   }
});

Upon inspecting the form data section in the chrome console, I notice that the json has a trailing colon.

[{"query":{"fuzzy":{"title":{"value": $scope.searchTerm,"fuzziness":"1"}}},
"highlight":{"fields":{"*":{}}}}]:    <--- this is the issue

This seems odd. Any suggestions on how to remove the trailing colon?

Answer №1

If you come across a similar behavior,

In my situation, the issue arose from incorrectly indexing a document with an incorrect JSON structure. When utilizing the bulk indexing feature in elasticSearch, JSONs with invalid structures are indexed without any notification.

The mistake was found in the response, not in the HTTP request itself.

Consider re-indexing the document to likely resolve this problem.

Answer №2

We encountered an issue where the http.post request was missing the HTTP header "content type", which should have been set to "application/json" for successful posting.

If you are posting JSON data, simply include

{headers:{'Content-Type': 'application/json'}}

as the third parameter in the post method. The corrected syntax is:

$http.post( endpoint, json_payload, {headers:{'Content-Type': 'application/json'}} )

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