Hide related fields without read permissions (#16832)

* remove related O2M fields without read permissions

* Added basic test for usePermissions composable

* updated test

---------

Co-authored-by: Rijk van Zanten <rijkvanzanten@me.com>

app/src/composables/use-permissions.test.ts

@@ -0,0 +1,123 @@
+import { createTestingPinia } from '@pinia/testing';
+import { setActivePinia } from 'pinia';
+import { ref } from 'vue';
+import { afterEach, beforeEach, describe, expect, test, vi } from 'vitest';
+
+beforeEach(() => {
+	setActivePinia(
+		createTestingPinia({
+			createSpy: vi.fn,
+			stubActions: false,
+		})
+	);
+});
+
+import { useUserStore } from '@/stores/user';
+import { usePermissionsStore } from '@/stores/permissions';
+import { usePermissions } from './use-permissions';
+import { useCollection } from '@directus/shared/composables';
+import { Field } from '@directus/shared/types';
+
+vi.mock('@directus/shared/composables');
+
+const mockUser = {
+	id: '00000000-0000-0000-0000-000000000000',
+	role: {
+		admin_access: false,
+		id: '00000000-0000-0000-0000-000000000000',
+	},
+};
+const mockReadPermissions = {
+	role: '00000000-0000-0000-0000-000000000000',
+	permissions: {
+		_and: [
+			{
+				field_a: {
+					_null: true,
+				},
+			},
+			{
+				field_b: {
+					_null: true,
+				},
+			},
+		],
+	},
+	validation: null,
+	presets: null,
+	fields: ['id', 'start_date', 'end_date'],
+	collection: 'test',
+	action: 'read',
+};
+const mockFields: Field[] = [
+	{
+		collection: 'test',
+		field: 'id',
+		name: 'id',
+		type: 'integer',
+		schema: null,
+		meta: null,
+	},
+	{
+		collection: 'test',
+		field: 'name',
+		name: 'name',
+		type: 'string',
+		schema: null,
+		meta: null,
+	},
+	{
+		collection: 'test',
+		field: 'start_date',
+		name: 'start_date',
+		type: 'timestamp',
+		schema: null,
+		meta: null,
+	},
+	{
+		collection: 'test',
+		field: 'end_date',
+		name: 'end_date',
+		type: 'timestamp',
+		schema: null,
+		meta: null,
+	},
+];
+
+vi.mock('@/api', () => {
+	return {
+		default: {
+			get: (path: string) => {
+				if (path === '/permissions') {
+					return Promise.resolve({
+						data: { data: [mockReadPermissions] },
+					});
+				}
+
+				return Promise.reject(new Error(`GET "${path}" is not mocked in this test`));
+			},
+		},
+	};
+});
+
+afterEach(() => {
+	vi.restoreAllMocks();
+});
+
+describe('usePermissions', () => {
+	test('Remove fields without read permissions #16732', async () => {
+		const userStore = useUserStore();
+		userStore.currentUser = mockUser as any;
+
+		const permissionsStore = usePermissionsStore();
+		await permissionsStore.hydrate();
+
+		vi.mocked(useCollection).mockReturnValue({ info: ref(null), fields: ref(mockFields) } as any);
+
+		const { fields } = usePermissions(ref('test'), ref(null), ref(false));
+		expect(fields.value.length).toBeGreaterThan(0);
+		for (const field of fields.value) {
+			expect(mockReadPermissions.fields.includes(field.field)).toBe(true);
+		}
+	});
+});

app/src/composables/use-permissions.ts

@@ -59,6 +59,12 @@ export function usePermissions(collection: Ref<string>, item: Ref<any>, isNew: R
 
 		const permissions = permissionsStore.getPermissionsForUser(collection.value, isNew.value ? 'create' : 'update');
 
+		// remove fields without read permissions so they don't show up in the DOM
+		const readableFields = permissionsStore.getPermissionsForUser(collection.value, 'read')?.fields;
+		if (readableFields && readableFields.includes('*') === false) {
+			fields = fields.filter((field) => readableFields.includes(field.field));
+		}
+
 		if (!permissions) return fields;
 
 		if (permissions.fields?.includes('*') === false) {