discourse/app/assets/javascripts/discourse/controllers/split-topic.js.es6

import ModalFunctionality from "discourse/mixins/modal-functionality";
import { extractError } from "discourse/lib/ajax-error";
import { movePosts } from "discourse/models/topic";
import DiscourseURL from "discourse/lib/url";
import { default as computed } from "ember-addons/ember-computed-decorators";

export default Ember.Controller.extend(ModalFunctionality, {
  topicName: null,
  saving: false,
  categoryId: null,

  topicController: Ember.inject.controller("topic"),
  selectedPostsCount: Ember.computed.alias("topicController.selectedPostsCount"),

  @computed("saving", "topicName")
  buttonDisabled(saving, topicName) {
    return saving || Ember.isEmpty(topicName);
  },

  @computed("saving")
  buttonTitle(saving) {
    return saving ? I18n.t("saving") : I18n.t("topic.split_topic.action");
  },

  onShow() {
    this.setProperties({
      "modal.modalClass": "split-modal",
      saving: false,
      categoryId: null,
      topicName: ""
    });
  },

  actions: {
    movePostsToNewTopic() {
      this.set("saving", true);

      const options = {
        title: this.get("topicName"),
        post_ids: this.get("topicController.selectedPostIds"),
        category_id: this.get("categoryId")
      };

      movePosts(this.get("model.id"), options).then(result => {
        this.send("closeModal");
        this.get("topicController").send("toggleMultiSelect");
        Ember.run.next(() => DiscourseURL.routeTo(result.url));
      }).catch(xhr => {
        this.flash(extractError(xhr, I18n.t("topic.split_topic.error")));
      }).finally(() => {
        this.set("saving", false);
      });

      return false;
    }
  }

});