angular state get param child - angularjs

Question

How can I get a param from child?
This is what I do:
$state.go('demo.content', {proces: '10'})
And then in controller 'Main' I need the value of param proces.
.state('demo', {
url: '/',
abstract: true,
views: {
'main': {
templateUrl: './App/main.html',
controller: 'Main'
}
})
.state('demo.content', {
url: '/monitoring',
views: {
'chart': {
templateUrl: './App/chart.html',
controller: 'Chart'
},
'grid': {
templateUrl: './App/grid.html',
controller: 'Grid'
},
params: {proces: '4'}
})

Answer 1

The point here is, that any call to 'demo.content' with different param process should re-call/re-init the controller of such state view.
Other words, only controllers which are part of this state, could consume the process as a part of injected params.
So, if there is really any part in main controller, which needs handle (changing) process id, it should be moved to the demo.content state, as another view
If this is the true, the best we can do is to move that view from parent into state:
.state('demo.content', {
url: '/monitoring',
views: {
'chart': {
templateUrl: './App/chart.html',
controller: 'Chart'
},
'grid': {
templateUrl: './App/grid.html',
controller: 'Grid'
},
// this would do the stuff fro main controller
// based on changing params
'mainProcessor': {
templateUrl: './App/mainProcessor.html',
controller: 'mainProcessor'
}
This, and only this way, you can be sure, that different param value will trigger the "mainProcessor" controller and allow him to do the job