didTransition

controllers.index.js

import Ember from 'ember';

export default Ember.Controller.extend({
  queryParams: ['category', 'term'],
  category: 0,
  term: 0,
  
  actions: {
    increment(qp) {
      let routeArgument = {};
      routeArgument[qp] = this.get(qp) + 1
      this.transitionToRoute({ queryParams: routeArgument});
    }
  }
});

routes.index.js

import Ember from 'ember';

export default Ember.Route.extend({
  queryParams: {
    category: {
      refreshModel: true
    }
  },

  actions: {
    didTransition: function() {
      alert('didTransition');
    }
  }
});

templates.application.hbs

<h1>Routing Test</h1>
{{outlet}}

templates.index.hbs

<h2>Index</h2>

Query params:
<ul>
<li>category: {{category}} <button onclick={{action 'increment' 'category'}}>increment</button></li>
<li>term: {{term}} <button onclick={{action 'increment' 'term'}}>increment</button></li>
</ul>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}