get_temporary_link and could not decode input as JSON

[jurgenatore]

Hello.

I'm trying to get a temporary link for file with using get_temporary_link from file_properties with below listed PHP code:

$getlink_url = 'https://api.dropboxapi.com/2/files/get_temporary_link'; 

$getlink_headers = array    (   'Authorization: Bearer '. $token,
                                            'Content-Type: application/json',
                                            'data: '.
                                            json_encode(
                                                array (
                                                "path"=>"/file_storage/some_file.zip"
                                                )
                                            )

                                        );
            $ch1 = curl_init($getlink_url);
            curl_setopt($ch1, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch1, CURLOPT_CUSTOMREQUEST, "POST");
            curl_setopt($ch1, CURLOPT_HTTPHEADER, $getlink_headers);
            
               
            
            $response2 = curl_exec($ch1);
            curl_close($ch1);
            error_log($response2);

But i receive an error:

[php7:notice] [pid 25434] [client ::1:40512] Error in call to API function "files/get_temporary_link": request body: could not decode input as JSON, referer: http://localhost/DropTest.html

Could you please let me know what i'm doing wrong. I found solutions for other languages but not for PHP. 

Thank you in advance for support.

Michal

[Greg-DB · Accepted solution]

The /2/files/get_temporary_link endpoint is an RPC-style endpoint, so it expects the API call parameters as JSON in the request body. 

In the code you shared, you're actually sending the parameters in a header named 'data'. 

You'll need to fix your code to send them in the request body, like:

$parameters = json_encode(
                    array (
                    "path"=>"/file_storage/some_file.zip"
                    )
                );

curl_setopt($ch1, CURLOPT_POSTFIELDS, $parameters);

[jurgenatore]

Greg

Thank you very much for support. Now works fine:

$getlink_url = 'https://api.dropboxapi.com/2/files/get_temporary_link'; 

$getlink_headers = array    (   'Authorization: Bearer '. $token,
                                            'Content-Type: application/json'
                                        );
$ch1 = curl_init($getlink_url);


$parameters = json_encode(
                array (
                "path"=>"/file_storage/some_file.zip"
                )
            );
curl_setopt($ch1, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch1, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch1, CURLOPT_POSTFIELDS, $parameters);
curl_setopt($ch1, CURLOPT_HTTPHEADER, $getlink_headers);
            
               
            
$response2 = curl_exec($ch1);
curl_close($ch1);
error_log($response2);

Best, Michal