Similar to int but accepts only positive integers (useful for pagination when there is a page parameter.

Define:

module.config(['$urlMatcherFactoryProvider', function($urlMatcherFactory) {
  $urlMatcherFactory.type('page', {
    decode: function(val) { return +val; },
    encode: function(val) { return Math.floor(val); },
    equals: function(a, b) { return this.is(a) && +a == +b; },
    is: function(val) { return angular.isNumber(val) && val >= 1; },
    pattern: /\d+/
  })
}]);

And use:

$stateProvider.state({
  url: '/my-route/{page:page}'
  template: '<my-page></my-page>'
});

Plunker and related SO answer.

Define:

module.config(['$urlMatcherFactoryProvider', function($urlMatcherFactory) {
  $urlMatcherFactory.type('boolean', {
    decode: function(val) { return val == true || val == "true" },
    encode: function(val) { return val ? 1 : 0; },
    equals: function(a, b) { return this.is(a) && a == b; },
    is: function(val) { return [true, false, 0, 1].indexOf(val) >= 0 },
    pattern: /false|true|0|1/
  })
}]);

And use:

$stateProvider.state({
  url: '/my-route/{showSidebar:boolean}'
  template: '<my-page></my-page>'
});

Plunker and related SO answer.

By default, ui-router encodes the slash / inside parameters. If you want to send a path in the URL, you need to define a custom parameter type.

Define:

module.config(['$urlMatcherFactoryProvider', function($urlMatcherFactory) {
  $urlMatcherFactory.type('path', {
    decode: function(val) { return val != null ? val.toString() : val; },
    encode: function(val) { return val != null ? val.toString() : val; },
    is: function(val) { return this.pattern.test(val); },
    pattern: /[^/]+\/[^/]+/
  })
}]);

And use:

$stateProvider.state({
  url: '/my-route/{directory:path}'
  template: '<my-page></my-page>'
});

Related question.