feat: add create link form

app/controllers/links_controller.ts

@@ -0,0 +1,32 @@
+import CollectionsController from '#controllers/collections_controller';
+import Link from '#models/link';
+import { linkValidator } from '#validators/link';
+import { inject } from '@adonisjs/core';
+import type { HttpContext } from '@adonisjs/core/http';
+
+@inject()
+export default class LinksController {
+  constructor(protected collectionsController: CollectionsController) {}
+
+  async showCreatePage({ auth, inertia }: HttpContext) {
+    const collections =
+      await this.collectionsController.getCollectionByAuthorId(auth.user!.id);
+    return inertia.render('links/create', { collections });
+  }
+
+  async store({ auth, request, response }: HttpContext) {
+    const { collectionId, ...payload } =
+      await request.validateUsing(linkValidator);
+
+    await this.collectionsController.getCollectionById(collectionId);
+    await Link.create({
+      ...payload,
+      collectionId,
+      authorId: auth.user?.id!,
+    });
+    return this.collectionsController.redirectToCollectionId(
+      response,
+      collectionId
+    );
+  }
+}