FEATURE: Make General the default category

app/assets/javascripts/discourse/app/models/composer.js

@@ -143,7 +143,9 @@ const Composer = RestModel.extend({
       const oldCategoryId = this._categoryId;
 
       if (isEmpty(categoryId)) {
-        categoryId = null;
+        // Set General as the default category
+        const generalCategoryId = this.siteSettings.general_category_id;
+        categoryId = generalCategoryId ? generalCategoryId : null;
       }
       this._categoryId = categoryId;
 

app/assets/javascripts/discourse/tests/acceptance/composer-test.js

@@ -32,8 +32,27 @@ acceptance("Composer", function (needs) {
   });
   needs.settings({
     enable_whispers: true,
+    general_category_id: 1,
+  });
+  needs.site({
+    can_tag_topics: true,
+    categories: [
+      {
+        id: 1,
+        name: "General",
+        slug: "general",
+        permission: 1,
+        topic_template: null,
+      },
+      {
+        id: 2,
+        name: "test too",
+        slug: "test-too",
+        permission: 1,
+        topic_template: "",
+      },
+    ],
   });
-  needs.site({ can_tag_topics: true });
   needs.pretender((server, helper) => {
     server.post("/uploads/lookup-urls", () => {
       return helper.response([]);
@@ -62,6 +81,8 @@ acceptance("Composer", function (needs) {
   test("Composer is opened", async function (assert) {
     await visit("/");
     await click("#create-topic");
+    // Check that General category is selected
+    assert.strictEqual(selectKit(".category-chooser").header().value(), "1");
 
     assert.strictEqual(
       document.documentElement.style.getPropertyValue("--composer-height"),

app/assets/javascripts/discourse/tests/integration/components/select-kit/category-chooser-test.js

@@ -126,6 +126,23 @@ module(
       assert.strictEqual(this.subject.header().label(), "category…");
     });
 
+    test("with allowUncategorized=null and generalCategoryId present", async function (assert) {
+      this.siteSettings.allow_uncategorized_topics = false;
+      this.siteSettings.general_category_id = 4;
+
+      await render(hbs`
+        <CategoryChooser
+          @value={{this.value}}
+          @options={{hash
+            allowUncategorized=null
+          }}
+        />
+      `);
+
+      assert.strictEqual(this.subject.header().value(), null);
+      assert.strictEqual(this.subject.header().label(), "");
+    });
+
     test("with allowUncategorized=null none=true", async function (assert) {
       this.siteSettings.allow_uncategorized_topics = false;
 

app/assets/javascripts/select-kit/addon/components/category-chooser.js

@@ -44,7 +44,10 @@ export default ComboBoxComponent.extend({
     ) {
       return Category.findUncategorized();
     } else {
-      return this.defaultItem(null, htmlSafe(I18n.t("category.choose")));
+      const generalCategoryId = this.siteSettings.general_category_id;
+      if (!generalCategoryId) {
+        return this.defaultItem(null, htmlSafe(I18n.t("category.choose")));
+      }
     }
   },
 

config/environments/test.rb

@@ -68,6 +68,11 @@
       s.set_regardless_of_locale(:download_remote_images_to_local, false)
       s.set_regardless_of_locale(:unique_posts_mins, 0)
       s.set_regardless_of_locale(:max_consecutive_replies, 0)
+
+      # Most existing tests were written assuming allow_uncategorized_topics
+      # was enabled, so we should set it to true.
+      s.set_regardless_of_locale(:allow_uncategorized_topics, true)
+
       # disable plugins
       if ENV['LOAD_PLUGINS'] == '1'
         s.set_regardless_of_locale(:discourse_narrative_bot_enabled, false)

config/site_settings.yml

@@ -806,7 +806,7 @@ posting:
   max_emojis_in_title: 1
   allow_uncategorized_topics:
     client: true
-    default: true
+    default: false
     refresh: true
   allow_duplicate_topic_titles: false
   allow_duplicate_topic_titles_category: false
@@ -2291,6 +2291,7 @@ uncategorized:
   general_category_id:
     default: -1
     hidden: true
+    client: true
   meta_category_id:
     default: -1
     hidden: true

db/migrate/20220927171707_disable_allow_uncategorized_new_sites.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class DisableAllowUncategorizedNewSites < ActiveRecord::Migration[7.0]
+  def up
+    result = execute <<~SQL
+      SELECT created_at
+      FROM schema_migration_details
+      ORDER BY created_at
+      LIMIT 1
+    SQL
+
+    # keep allow uncategorized for existing sites
+    if result.first['created_at'].to_datetime < 1.hour.ago
+      execute <<~SQL
+        INSERT INTO site_settings(name, data_type, value, created_at, updated_at)
+        VALUES('allow_uncategorized_topics', 5, 't', NOW(), NOW())
+        ON CONFLICT (name) DO NOTHING
+      SQL
+    end
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end

spec/models/topic_converter_spec.rb

@@ -6,7 +6,7 @@
     fab!(:author) { Fabricate(:user) }
     fab!(:category) { Fabricate(:category, topic_count: 1) }
     fab!(:private_message) { Fabricate(:private_message_topic, user: author) } # creates a topic without a first post
-    let(:first_post) { create_post(user: author, topic: private_message) }
+    let(:first_post) { create_post(user: author, topic: private_message, allow_uncategorized_topics: false) }
     let(:other_user) { private_message.topic_allowed_users.find { |u| u.user != author }.user }
 
     let(:uncategorized_category) do

spec/support/helpers.rb

@@ -45,6 +45,12 @@ def create_topic(args = {})
   end
 
   def create_post(args = {})
+    # Pretty much all the tests with `create_post` will fail without this
+    # since allow_uncategorized_topics is now false by default
+    unless args[:allow_uncategorized_topics] == false
+      SiteSetting.allow_uncategorized_topics = true
+    end
+
     args[:title] ||= "This is my title #{Helpers.next_seq}"
     args[:raw] ||= "This is the raw body of my post, it is cool #{Helpers.next_seq}"
     args[:topic_id] = args[:topic].id if args[:topic]