DOCSP-35959: search text (#2889)

* DOCSP-35959: search text

* code fixes

* JM and CC PR fixes 1

* fix controller code

* move index creation into setup

* Fix index creation in tests

* update tests to search for phrase

---------

Co-authored-by: Jérôme Tamarelle <[email protected]>

Author: rustagir

docs/fundamentals/read-operations.txt

@@ -29,6 +29,7 @@ This guide shows you how to perform the following tasks:
 
 - :ref:`laravel-retrieve-matching`
 - :ref:`laravel-retrieve-all`
+- :ref:`laravel-retrieve-text-search`
 - :ref:`Modify Find Operation Behavior <laravel-modify-find>`
 
 Before You Get Started
@@ -175,6 +176,121 @@ Use the following syntax to run a find operation that matches all documents:
    more information about ``take()``, see the :ref:`laravel-modify-find` section of this
    guide.
 
+.. _laravel-retrieve-text-search:
+
+Search Text Fields
+------------------
+
+A text search retrieves documents that contain a **term** or a **phrase** in the
+text-indexed fields. A term is a sequence of characters that excludes
+whitespace characters. A phrase is a sequence of terms with any number
+of whitespace characters.
+
+.. note::
+
+   Before you can perform a text search, you must create a :manual:`text
+   index </core/indexes/index-types/index-text/>` on
+   the text-valued field. To learn more about creating
+   indexes, see the :ref:`laravel-eloquent-indexes` section of the
+   Schema Builder guide.
+
+You can perform a text search by using the :manual:`$text
+</reference/operator/query/text>` operator followed
+by the ``$search`` field in your query filter that you pass to the
+``where()`` method. The ``$text`` operator performs a text search on the
+text-indexed fields. The ``$search`` field specifies the text to search for.
+
+After building your query with the ``where()`` method, chain the ``get()``
+method to retrieve the query results.
+
+This example calls the ``where()`` method on the ``Movie`` Eloquent model to
+retrieve documents in which the ``plot`` field contains the phrase
+``"love story"``. To perform this text search, the collection must have
+a text index on the ``plot`` field.
+
+.. tabs::
+
+   .. tab:: Query Syntax
+      :tabid: query-syntax
+
+      Use the following syntax to specify the query:
+
+      .. literalinclude:: /includes/fundamentals/read-operations/ReadOperationsTest.php
+         :language: php
+         :dedent:
+         :start-after: start-text
+         :end-before: end-text
+
+   .. tab:: Controller Method
+      :tabid: controller
+
+      To see the query results in the ``browse_movies`` view, edit the ``show()`` function
+      in the ``MovieController.php`` file to resemble the following code:
+
+      .. io-code-block::
+         :copyable: true
+
+         .. input::
+            :language: php
+
+            class MovieController
+            {
+                public function show()
+                {
+                     $movies = Movie::where('$text', ['$search' => '"love story"'])
+                         ->get();
+
+                     return view('browse_movies', [
+                         'movies' => $movies
+                     ]);
+                }
+            }
+
+         .. output::
+            :language: none
+            :visible: false
+
+            Title: Cafè de Flore
+            Year: 2011
+            Runtime: 120
+            IMDB Rating: 7.4
+            IMDB Votes: 9663
+            Plot: A love story between a man and woman ...
+            
+            Title: Paheli
+            Year: 2005
+            Runtime: 140
+            IMDB Rating: 6.7
+            IMDB Votes: 8909
+            Plot: A folk tale - supernatural love story about a ghost ...
+            
+            Title: Por un puèado de besos
+            Year: 2014
+            Runtime: 98
+            IMDB Rating: 6.1
+            IMDB Votes: 223
+            Plot: A girl. A boy. A love story ...
+
+            ...
+
+A text search assigns a numerical :manual:`text score </reference/operator/query/text/#text-score>` to indicate how closely
+each result matches the string in your query filter. You can sort the
+results by relevance by using the ``orderBy()`` method to sort on the
+``textScore`` metadata field. You can access this metadata by using the
+:manual:`$meta </reference/operator/aggregation/meta/>` operator:
+
+.. literalinclude:: /includes/fundamentals/read-operations/ReadOperationsTest.php
+   :language: php
+   :dedent:
+   :start-after: start-text-relevance
+   :end-before: end-text-relevance
+   :emphasize-lines: 2
+
+.. tip::
+
+   To learn more about the ``orderBy()`` method, see the
+   :ref:`laravel-sort` section of this guide.
+
 .. _laravel-modify-find:
 
 Modify Behavior

docs/includes/fundamentals/read-operations/ReadOperationsTest.php

@@ -5,6 +5,7 @@
 namespace App\Http\Controllers;
 
 use App\Models\Movie;
+use Illuminate\Support\Facades\DB;
 use MongoDB\Laravel\Tests\TestCase;
 
 class ReadOperationsTest extends TestCase
@@ -15,7 +16,10 @@ protected function setUp(): void
 
         parent::setUp();
 
-        Movie::truncate();
+        $moviesCollection = DB::connection('mongodb')->getCollection('movies');
+        $moviesCollection->drop();
+        $moviesCollection->createIndex(['plot' => 'text']);
+
         Movie::insert([
             ['year' => 2010, 'imdb' => ['rating' => 9]],
             ['year' => 2010, 'imdb' => ['rating' => 9.5]],
@@ -26,6 +30,9 @@ protected function setUp(): void
             ['year' => 1999, 'countries' => ['Indonesia'], 'title' => 'Title 4'],
             ['year' => 1999, 'countries' => ['Canada'], 'title' => 'Title 5'],
             ['year' => 1999, 'runtime' => 30],
+            ['title' => 'movie_a', 'plot' => 'this is a love story'],
+            ['title' => 'movie_b', 'plot' => 'love is a long story'],
+            ['title' => 'movie_c', 'plot' => 'went on a trip'],
         ]);
     }
 
@@ -94,4 +101,36 @@ public function testFirst(): void
         $this->assertNotNull($movie);
         $this->assertInstanceOf(Movie::class, $movie);
     }
+
+    /**
+     * @runInSeparateProcess
+     * @preserveGlobalState disabled
+     */
+    public function testText(): void
+    {
+        // start-text
+        $movies = Movie::where('$text', ['$search' => '"love story"'])
+            ->get();
+        // end-text
+
+        $this->assertNotNull($movies);
+        $this->assertCount(1, $movies);
+    }
+
+    /**
+     * @runInSeparateProcess
+     * @preserveGlobalState disabled
+     */
+    public function testTextRelevance(): void
+    {
+        // start-text-relevance
+        $movies = Movie::where('$text', ['$search' => '"love story"'])
+            ->orderBy('score', ['$meta' => 'textScore'])
+            ->get();
+        // end-text-relevance
+
+        $this->assertNotNull($movies);
+        $this->assertCount(1, $movies);
+        $this->assertEquals('this is a love story', $movies[0]->plot);
+    }
 }