Track and display subdomains under their root domain

Adds sites.root_domain (indexed string, backfilled for existing rows) computed via a naive "last two labels" heuristic (App\Support\RootDomain) — good enough for example.com/somesite.es, but wrong for two-part public suffixes like .co.uk. Doing that correctly needs the Mozilla Public Suffix List; flagged as a known simplification rather than built now. Deliberately not a hard FK: like Backlink.target_domain, a subdomain can get indexed before its root domain does (or vice versa), so Site::subdomains()/rootSite() match on the domain string rather than requiring the relationship to exist at write time. Site detail page: a root domain shows a paginated "Subdomains" section (same guest-preview cap as Pages/Backlinks); a subdomain shows "Subdomain of {root}" linking back, when the root is itself indexed. Verified against real data: 21k.ro correctly lists its two known subdomains (buzau.21k.ro, timisoara.21k.ro), each of which correctly links back to 21k.ro. Added SubdomainsTest (root lists subdomains, subdomain links to root, empty state) — full suite (31 tests) passes.
2026-07-25 15:44:12 +03:00
parent 6435bccb20
commit 72b87ab579
8 changed files with 196 additions and 0 deletions
@@ -0,0 +1,45 @@
+<?php
+
+use App\Support\RootDomain;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * root_domain lets a site's subdomains be found without a hard FK (which would
+     * need backfilling later if the root domain gets crawled after its subdomains do)
+     * — same reasoning as Backlink.target_domain being a plain indexed string rather
+     * than a foreign key to a site that might not exist yet.
+     */
+    public function up(): void
+    {
+        Schema::table('sites', function (Blueprint $table) {
+            $table->string('root_domain')->nullable()->after('domain');
+        });
+
+        DB::table('sites')->orderBy('id')->select('id', 'domain')->chunkById(500, function ($rows) {
+            foreach ($rows as $row) {
+                DB::table('sites')->where('id', $row->id)->update(['root_domain' => RootDomain::of($row->domain)]);
+            }
+        });
+
+        Schema::table('sites', function (Blueprint $table) {
+            $table->string('root_domain')->nullable(false)->change();
+            $table->index('root_domain');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('sites', function (Blueprint $table) {
+            $table->dropIndex(['root_domain']);
+            $table->dropColumn('root_domain');
+        });
+    }
+};