digitalmars.D.learn - Best way for handle missing args in REST interface in vibed
- Suliman (10/10) May 29 2017 I am doing REST interface with vibed. And thinking about handling
- Suliman (3/14) May 29 2017 It's seems I found how to do it
- Nicholas Wilson (5/16) May 29 2017 That depends on wether or not there is a sensible default for y,
I am doing REST interface with vibed. And thinking about handling
errors, if users forgot to pass all expected args in function.
For example:
foo(int x, int y) // get request
{
}
/api/foo?x=111
And if user is forgot to pass `y` we will get error in the
browser. What is the right way to handle curch cases?
Wrap is with try-catch looks wrong.
May 29 2017
Suliman <evermind live.ru>
On Monday, 29 May 2017 at 12:23:59 UTC, Suliman wrote:
I am doing REST interface with vibed. And thinking about
handling errors, if users forgot to pass all expected args in
function.
For example:
foo(int x, int y) // get request
{
}
/api/foo?x=111
And if user is forgot to pass `y` we will get error in the
browser. What is the right way to handle curch cases?
Wrap is with try-catch looks wrong.
It's seems I found how to do it
http://vibed.org/api/vibe.web.web/errorDisplay
May 29 2017
On Monday, 29 May 2017 at 12:23:59 UTC, Suliman wrote:
I am doing REST interface with vibed. And thinking about
handling errors, if users forgot to pass all expected args in
function.
For example:
foo(int x, int y) // get request
{
}
/api/foo?x=111
And if user is forgot to pass `y` we will get error in the
browser. What is the right way to handle curch cases?
Wrap is with try-catch looks wrong.
That depends on wether or not there is a sensible default for y,
if so
foo(int x, int y=0)
ought to work.
May 29 2017
I wrote next code:
void foo(string _error = null)
{
writeln("Error");
}
override:
errorDisplay!foo
Json doTrackSpeedAnalyze(int trackid, string
startDateTime, string endDateTime) //
/api/mytrack?trackid=123&startDateTime=2000&endDateTime=2010
{
if(endDateTime.length == 0)
{
throw new Exception("End Date must not be empty");
}
return Json.emptyObject;
}
If I access to url: /api/mytrack?trackid=123&startDateTime=2000
(witout endDateTime) I am expecting execution foo() block, but it
does not happens. Why?
And what do Exception here? Why should handle it?
May 29 2017
rootPathFromName
interface API
{
path("mytrack") method(HTTPMethod.GET) Json
doTrackSpeedAnalyze(int trackid, string startDateTime, string
endDateTime);
}
class MyRouter : API
{
Config config;
Database database;
this(Config config, Database database)
{
this.config = config;
this.database = database;
}
path("/")
void foo(string _error = null) // I expect that this will
be called if exception happen in doTrackSpeedAnalyze
{
writeln("Error in console"); // does not writing on
console
}
override:
errorDisplay!foo
Json doTrackSpeedAnalyze(int trackid, string
startDateTime, string endDateTime) //
/api/mytrack?trackid=123&startDateTime=2000&endDateTime=2010
{
if(endDateTime == "0")
{
throw new Exception("Some fields are empty");
}
return Json.emptyObject;
}
}
What I am doing wrong? Should I do override for foo? Should foo
present in `interface`?
May 29 2017
I had post question here http://forum.rejectedsoftware.com/groups/rejectedsoftware.vibed/thread/43511/
May 30 2017