Errors Enum - common parameters for cases
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I have got sample Error enum in my application:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
And error handling looks like:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
But I get compilation error in here saying: Value of type 'APIError' has no member 'message'.
I know I can get parameters by pattern matching, but I don't want to handle every case in exactly same way:
do
return try next.respond(to: request)
catch APIError.MissingArgument(let message)
throw Abort(.badRequest, reason: message)
catch APIError.IncorrectArguments(let message)
throw Abort(.badRequest, reason: message)
In future there may be more APIErrors in enum and I don't want to handle each one using separate catch block, because everyone will be exactly the same.
Is there any way to handle these errors in some generic way?
swift error-handling
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
add a comment |
I have got sample Error enum in my application:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
And error handling looks like:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
But I get compilation error in here saying: Value of type 'APIError' has no member 'message'.
I know I can get parameters by pattern matching, but I don't want to handle every case in exactly same way:
do
return try next.respond(to: request)
catch APIError.MissingArgument(let message)
throw Abort(.badRequest, reason: message)
catch APIError.IncorrectArguments(let message)
throw Abort(.badRequest, reason: message)
In future there may be more APIErrors in enum and I don't want to handle each one using separate catch block, because everyone will be exactly the same.
Is there any way to handle these errors in some generic way?
swift error-handling
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
You are throwing errors in catch. You'd want to throw error in a function and catch it in aDo..Catch
– Desdenova
Nov 15 '18 at 14:19
throw Abortis Vapor way to return response with given status and message.
– Blejwi
Nov 15 '18 at 14:23
@Blejwi check my answer.
– Raul Mantilla
Nov 15 '18 at 17:48
add a comment |
I have got sample Error enum in my application:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
And error handling looks like:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
But I get compilation error in here saying: Value of type 'APIError' has no member 'message'.
I know I can get parameters by pattern matching, but I don't want to handle every case in exactly same way:
do
return try next.respond(to: request)
catch APIError.MissingArgument(let message)
throw Abort(.badRequest, reason: message)
catch APIError.IncorrectArguments(let message)
throw Abort(.badRequest, reason: message)
In future there may be more APIErrors in enum and I don't want to handle each one using separate catch block, because everyone will be exactly the same.
Is there any way to handle these errors in some generic way?
swift error-handling
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
I have got sample Error enum in my application:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
And error handling looks like:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
But I get compilation error in here saying: Value of type 'APIError' has no member 'message'.
I know I can get parameters by pattern matching, but I don't want to handle every case in exactly same way:
do
return try next.respond(to: request)
catch APIError.MissingArgument(let message)
throw Abort(.badRequest, reason: message)
catch APIError.IncorrectArguments(let message)
throw Abort(.badRequest, reason: message)
In future there may be more APIErrors in enum and I don't want to handle each one using separate catch block, because everyone will be exactly the same.
Is there any way to handle these errors in some generic way?
swift error-handling
swift error-handling
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
asked Nov 15 '18 at 14:14
BlejwiBlejwi
390420
390420
You are throwing errors in catch. You'd want to throw error in a function and catch it in aDo..Catch
– Desdenova
Nov 15 '18 at 14:19
throw Abortis Vapor way to return response with given status and message.
– Blejwi
Nov 15 '18 at 14:23
@Blejwi check my answer.
– Raul Mantilla
Nov 15 '18 at 17:48
add a comment |
You are throwing errors in catch. You'd want to throw error in a function and catch it in aDo..Catch
– Desdenova
Nov 15 '18 at 14:19
throw Abortis Vapor way to return response with given status and message.
– Blejwi
Nov 15 '18 at 14:23
@Blejwi check my answer.
– Raul Mantilla
Nov 15 '18 at 17:48
You are throwing errors in catch. You'd want to throw error in a function and catch it in a
Do..Catch– Desdenova
Nov 15 '18 at 14:19
You are throwing errors in catch. You'd want to throw error in a function and catch it in a
Do..Catch– Desdenova
Nov 15 '18 at 14:19
throw Abort is Vapor way to return response with given status and message.– Blejwi
Nov 15 '18 at 14:23
throw Abort is Vapor way to return response with given status and message.– Blejwi
Nov 15 '18 at 14:23
@Blejwi check my answer.
– Raul Mantilla
Nov 15 '18 at 17:48
@Blejwi check my answer.
– Raul Mantilla
Nov 15 '18 at 17:48
add a comment |
1 Answer
1
active
oldest
votes
You can define computed properties on an enum like so:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
var message: String
switch self
case .IncorrectArguments(let message): return message
case .MissingArgument(let message): return message
And call the message computed properties from your catch clouser like this:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can define computed properties on an enum like so:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
var message: String
switch self
case .IncorrectArguments(let message): return message
case .MissingArgument(let message): return message
And call the message computed properties from your catch clouser like this:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
add a comment |
You can define computed properties on an enum like so:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
var message: String
switch self
case .IncorrectArguments(let message): return message
case .MissingArgument(let message): return message
And call the message computed properties from your catch clouser like this:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
add a comment |
You can define computed properties on an enum like so:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
var message: String
switch self
case .IncorrectArguments(let message): return message
case .MissingArgument(let message): return message
And call the message computed properties from your catch clouser like this:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
You can define computed properties on an enum like so:
public enum APIError: Error
case IncorrectArguments(message: String)
case MissingArgument(message: String)
var message: String
switch self
case .IncorrectArguments(let message): return message
case .MissingArgument(let message): return message
And call the message computed properties from your catch clouser like this:
do
return try next.respond(to: request)
catch let error as APIError
throw Abort(.badRequest, reason: error.message)
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
edited Nov 15 '18 at 16:05
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
answered Nov 15 '18 at 15:53
Raul MantillaRaul Mantilla
1395
1395
add a comment |
add a comment |
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You are throwing errors in catch. You'd want to throw error in a function and catch it in a
Do..Catch– Desdenova
Nov 15 '18 at 14:19
throw Abortis Vapor way to return response with given status and message.– Blejwi
Nov 15 '18 at 14:23
@Blejwi check my answer.
– Raul Mantilla
Nov 15 '18 at 17:48