Detect wrong parameter with REST

[mrluigi2017]

Hi,

I would like to return a different http statuscode when a wrong parameter is passed to a REST method. If I am not mistaken an internal server error occurs by default. I know I can use:

kbmMWRaiseHTTPError(407,’….’) or

raise EkbmMWHTTPException.Create(407,’…’);

But how do I know that the (rest body) parameter is wrong?

Thank in advance

Luigi

[kimbomadsen]

If its data extracted from the URL path part {..} syntax, or data extracted from the query part $… syntax, then just define the arguments to be required in the arguments REST attribute [kbmMW_Rest(‘value:”{value2}”, required:true’)]

If its data attempted to be extracted from the body part, then all you refer to is [kbmMW_Rest(‘value:body’)]’. A body may or may not contain anything. You however later on use TkbmMWHTTPQueryValues to extract the body parts.

var

qv:TkbmMWHTTPQueryValues; // Found in kbmMWHTTPUtils.pas

begin

  qv:=TkbmMWHTTPQueryValues.Create;

  try

   qv.AsString:=ABody; // If the body is URL encoded you can use qv.AsEncodedString:=ABody

   value1:=qv.ValueByName[‘value1’];

   value2:=qv.ValueByName[‘value2’];

  finally

    qv.Free;

  end;

end;

You can at any place check for the values existence and if it does not exist, throw an exception.

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