FEATURE: Allow choice of category when making a PM public (#7907)

* FEATURE: Allow choice of category when making a PM public

Previously it would default to uncategorized, which was not ideal on
some forums. This gives the staff member more choice about what they'd
like to do.

* Make the optional category more explicit

* Joffrey's feedback

app/assets/javascripts/discourse/controllers/convert-to-public-topic.js.es6

@@ -0,0 +1,26 @@
+import { popupAjaxError } from "discourse/lib/ajax-error";
+import ModalFunctionality from "discourse/mixins/modal-functionality";
+
+export default Ember.Controller.extend(ModalFunctionality, {
+  publicCategoryId: null,
+  saving: true,
+
+  onShow() {
+    this.setProperties({ publicCategoryId: null, saving: false });
+  },
+
+  actions: {
+    makePublic() {
+      let topic = this.model;
+      topic
+        .convertTopic("public", { categoryId: this.publicCategoryId })
+        .then(() => {
+          topic.set("archetype", "regular");
+          topic.set("category_id", this.publicCategoryId);
+          this.appEvents.trigger("header:show-topic", topic);
+          this.send("closeModal");
+        })
+        .catch(popupAjaxError);
+    }
+  }
+});

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

@@ -1073,11 +1073,17 @@ export default Ember.Controller.extend(bufferedProperty("model"), {
     },
 
     convertToPublicTopic() {
-      this.model.convertTopic("public");
+      showModal("convert-to-public-topic", {
+        model: this.model,
+        modalClass: "convert-to-public-topic"
+      });
     },
 
     convertToPrivateMessage() {
-      this.model.convertTopic("private");
+      this.model
+        .convertTopic("private")
+        .then(() => window.location.reload())
+        .catch(popupAjaxError);
     },
 
     removeFeaturedLink() {

app/assets/javascripts/discourse/models/topic.js.es6

@@ -599,10 +599,12 @@ const Topic = RestModel.extend({
     });
   },
 
-  convertTopic(type) {
-    return ajax(`/t/${this.id}/convert-topic/${type}`, { type: "PUT" })
-      .then(() => window.location.reload())
-      .catch(popupAjaxError);
+  convertTopic(type, opts) {
+    let args = { type: "PUT" };
+    if (opts && opts.categoryId) {
+      args.data = { category_id: opts.categoryId };
+    }
+    return ajax(`/t/${this.id}/convert-topic/${type}`, args);
   },
 
   resetBumpDate() {

app/assets/javascripts/discourse/templates/modal/convert-to-public-topic.hbs

@@ -0,0 +1,13 @@
+{{#d-modal-body title="topic.make_public.title"}}
+
+  <div class='instructions'>
+    {{i18n "topic.make_public.choose_category"}}
+  </div>
+  {{category-chooser value=publicCategoryId}}
+
+{{/d-modal-body}}
+
+<div class='modal-footer'>
+  {{d-button class="btn-primary" action=(action "makePublic") label="composer.modal_ok" disabled=saving}}
+  {{d-modal-cancel close=(route-action "closeModal")}}
+</div>

app/assets/stylesheets/common/components/convert-to-public-topic-modal.scss

@@ -0,0 +1,5 @@
+.convert-to-public-topic .modal-body {
+  .instructions {
+    margin-bottom: 1em;
+  }
+}

app/controllers/topics_controller.rb

@@ -821,7 +821,7 @@ class TopicsController < ApplicationController
     guardian.ensure_can_convert_topic!(topic)
 
     if params[:type] == "public"
-      converted_topic = topic.convert_to_public_topic(current_user)
+      converted_topic = topic.convert_to_public_topic(current_user, category_id: params[:category_id])
     else
       converted_topic = topic.convert_to_private_message(current_user)
     end

app/models/topic.rb

@@ -1307,8 +1307,8 @@ class Topic < ActiveRecord::Base
     builder.query_single.first.to_i
   end
 
-  def convert_to_public_topic(user)
-    public_topic = TopicConverter.new(self, user).convert_to_public_topic
+  def convert_to_public_topic(user, category_id: nil)
+    public_topic = TopicConverter.new(self, user).convert_to_public_topic(category_id)
     add_small_action(user, "public_topic") if public_topic
     public_topic
   end