Laravel development: How to implement full-text search using Laravel Scout?

Laravel development: How to use Laravel Scout to implement full-text search?

Laravel Scout is a Laravel full-text search solution. It is a popular open source software that allows developers to easily implement efficient full-text search functions. In this article, we will introduce how to use Laravel Scout to implement full-text search functionality.

Install Laravel Scout

First, we need to install Laravel Scout. It can be installed using Composer:

composer require laravel/scout

Then, we need to install an external search engine such as Algolia or Elasticsearch. Here we introduce using Algolia as a search engine.

Algolia is a cloud-based search engine that provides a powerful API and a set of tools that allow you to easily create, configure and use search engines. In order to use Algolia as Laravel Scout's search engine, we need to install its SDK:

composer require algolia/algoliasearch-client-php

Configuring Algolia

Next, we need to configure Algolia. First, we need to register an Algolia account and create an application and index. The use of Algolia will not be introduced in detail here. Interested readers can check its official documentation by themselves.

We then need to add Algolia’s application ID and API key to Laravel’s .env file:

ALGOLIA_APP_ID=your_application_id
ALGOLIA_SECRET=your_api_secret

Set up the search model in the database

Next , we need to define our search model and add it to Laravel Scout. In this example we will search our article model. First, we need to use the Searchable trait in our article model:

use LaravelScoutSearchable;

class Post extends Model
{
    use Searchable;
    ...
}

Then, we need to define a searchableAs method on the model to specify which Algolia index will be searched:

public function searchableAs()
{
    return 'posts_index';
}

in Algolia Create this index in , this index will be used to store our article records. Then, in our search model (the Post model in this case), we need to define a toSearchableArray method:

public function toSearchableArray()
{
    $array = $this->toArray();

    return $array;
}

The toSearchableArray method returns an associative array containing all searchable fields.

Searching with Laravel Scout

Now that we have completed the configuration of Laravel Scout and Algolia, we have also set up the search model in our article model. Now, we need to implement a search page in our application.

We need a search form that is submitted to a controller that will handle the search query and send it to Algolia for search. We need to use Laravel Scout's search method to search the Algolia index:

public function search(Request $request)
{
    $search = $request->get('q');

    $posts = Post::search($search)->get();

    return view('search', compact('posts', 'search'));
}

The search method returns a Laravel Scout search result set, and we can obtain the search results through this result set.

Finally, we need to display the search results to the user. In web pages, we can use Laravel's Blade template engine to render results:

@if(count($posts) > 0)
    @foreach($posts as $post)
        <div class="post">
            <h2>{{$post->title}}</h2>
            <p>{{$post->content}}</p>
        </div>
    @endforeach
@else
    <div class="alert alert-warning">
        No results found for "{{$search}}"
    </div>
@endif

Conclusion

Laravel Scout is a popular full-text search solution based on external search engines such as Algolia that can Allow developers to easily implement efficient full-text search functions. In this article, we learned how to use Laravel Scout to implement full-text search, including configuring Algolia, creating a search model, and using Laravel Scout to search in your application. This helps us more easily add powerful search capabilities to our applications, thereby improving the user experience.

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