I am trying to create a set of Controller classes which are derived from a base class that have many dependencies. Every time I want to create a derived class I have to copy the base class constructor dependencies into the derived class constructor. This seems particularly ugly and repetitive. See below;
module MyModule
{
export class ParentCtrl
{
constructor($http, $provide, $scope,$compile,MyService,$parse,$timeout)
{
console.log('parent');
}
FunctionA(){...}
...
FunctionZ(){...}
}
export class ChildCtrl extends ParentCtrl
{
constructor($http, $provide, $scope,$compile,MyService,$parse,$timeout)
{
super($http, $provide, $scope,$compile,MyService,$parse,$timeout);
console.log('child');
}
FunctionA(){ console.log('Override A'); }
}
export class GrandChildCtrl extends ChildCtrl
{
constructor($http, $provide, $scope,$compile,MyService,$parse,$timeout)
{
super($http, $provide, $scope,$compile,MyService,$parse,$timeout);
console.log('grandchild');
}
FunctionB(){ console.log('Override B'); }
}
}
I have removed the type definitions from the constructor parameters for ease of reading.
Is there a way to avoid these lengthy constructor being duplicated? I had thought of having a function in the base/Parent controller which is called from the constructor to inject the required types. This would mean dependencies would be confined to the base class.
Has anyone successfully tried this before?
