I have route:
$app->get('/admin/login/{status}', 'App\Controller\Admin\AdminController:loginAction')
How do I make {status} parameter optional?
use square brackets:
$app->get('/admin/login[/{status}]', 'App\Controller\Admin\AdminController:loginAction')
See http://www.slimframework.com/docs/objects/router.html#route-placeholders
Related
What is the problem? How can I solve it? My codes:
You should pass the onChanged argument in ApprovalQueuePage as it is required.Pass it like this:
//When calling approval queue leave everything as it is
//just replace ApprovalQueuePage() with
ApprovalQueuePage(onChanged: (String value){
//You can do anything with the value
})
Error: Method 'replaceFirst' cannot be called on 'String?' because it is potentially null.
Try calling using ?. instead.)
.replaceFirst(r'$selectedRowCount', formatDecimal(selectedRowCount));
As Saffron-codes says, you cant do a replaceFirst on a 'String?' variable since it can be null, and dart is null safe.
There's two options for you to do. You can either make the variable a 'String' instead, if you do this you'll have to give it a value when initiating it:
String variableName = ''
Instead of:
String? variableName
You could also do a null-check (adding a questionmark before .replaceFirst) when calling replaceFirst, this is what it suggests doing in the error message 'Try calling using ?. instead.':
variableName?.replaceFirst(r'$selectedRowCount', formatDecimal(selectedRowCount));
Add the ! operator before . to make it non-nullable
!.replaceFirst(r'$selectedRowCount', formatDecimal(selectedRowCount));
look at this code :
function a2j(trusted:Boolean=true):String
{
...
}
compiler will not accept this code in flash actionscript 2.
It looks like AS2 doesn't force you to supply the all the arguments that a function declares. At the bottom of this help page, they state that arguments you do not supply are undefined ... and that any extra arguments you supply are ignored.
Also, the answer to this question shows that you can use the arguments keyword (an Array) to work with the parameters that are passed into the function.
So for a default value, as in your example above, you could do something like this:
function methodThatHasADefault(value:Boolean):void
{
if (arguments.length == 0)
value = true;
// do something
}
I can't seem to find a concise answer to this question. What is the correct coffeescriptic way to return the value from _otherInstanceMethod when calling #_instanceMethod instead of the function binding itself?
x = _instanceMethod: () ->
#_otherInstanceMethod key: 'value'
Edit (thanks commenters)
This returns:
x = function () {
[...] # function body omitted
});
Instead of
x = 'some value returned by _otherInstanceMethod'
I would like the value to be returned instead of the function binding to _otherInstanceMethod
Being totally new to Coffeescript, this was my fault. I was calling the instance method like:
#_instanceMethod
instead of
#_instanceMethod()
Sorry for the trouble, voting to delete
In CoffeeScript #something translated into this.something regardless of the underlying variable type. This means you can use # only in conjuction with properties, with methods you still ought to use good old this.
I am trying to do something like this. However the WithMetadata method wont let me.
Is this a problem in Autofac and should TScanningActivatorData in the WithMetadata overloads be changed to TActivatorData, or am i approaching this the wrong way?
builder.RegisterType(myType).As<IMyType().AsSelf().WithMetadata("somekey", delegate(Type t)
{
//dosomething
return t;
});
This gives me the error on the WithMetadata method: The type 'Autofac.Builder.ConcreteReflectionActivatorData' cannot be used as type parameter 'TScanningActivatorData' in the generic type or method 'Autofac.RegistrationExtensions.WithMetadata<TLimit,TScanningActivatorData,TRegistrationStyle>(Autofac.Builder.IRegistrationBuilder<TLimit,TScanningActivatorData,TRegistrationStyle>, string, System.Func<System.Type,object>)'. There is no implicit reference conversion from 'Autofac.Builder.ConcreteReflectionActivatorData' to 'Autofac.Features.Scanning.ScanningActivatorData'.
There's a more suitable overload for what you're trying to achieve. The t parameter passed in to the delegate is the same as myType - so the equivalent code is:
var someValue = DoSomething(myType);
builder.RegisterType(myType)
.As<IMyType>()
.AsSelf()
.WithMetadata("somekey", someValue);
The overload you've been looking at is for use with scanning registrations, e.g. when using RegisterAssemblyTypes() rather than RegisterType().
Hope this helps.
Nick