becklyn/search-bundle

Simply and automatically power your Symfony projects with Elasticsearch.

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github.com/Becklyn/SearchBundle

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Type:symfony-bundle

2.0.0 2022-12-12 10:43 UTC

Requires

BSD-3-Clause 8ea330b263b19f12c9ff9c4f04682c729994f72b

This package is auto-updated.

Last update: 2024-11-20 16:06:51 UTC

README

Installation

  1. First install the bundle via composer:

    composer require becklyn/search-bundle

  2. Load the bundle in your AppKernel

Configuration

Entity annotations

Marking a class for indexing

For regular entities just mark the class with the annotation and implement the SearchableEntityInterface interface:

use Becklyn\SearchBundle\Entity\SearchableEntityInterface;
use Becklyn\SearchBundle\Mapping as Search;

/**
 * @Search\Item()
 */
class SomeEntity implements SearchableEntityInterface
{
}

For localized entities, mark the class and implement the LocalizedSearchableEntityInterface interface:

use Becklyn\Interfaces\LanguageInterface;
use Becklyn\SearchBundle\Entity\LocalizedSearchableEntityInterface;
use Becklyn\SearchBundle\Mapping as Search;

/**
 * @Search\Item(
 *   index="custom-index-name",
 *   loader="some.service:method",
 * )
 */
class LocalizedSomeEntity implements LocalizedSearchableEntityInterface
{
    /**
     * @return LanguageInterface
     */
    public function getLanguage ()
    {
        
    }
}

Note: you will need the LanguageInterface from the becklyn/interfaces package.

@Search\Item() annotation

/**
 * @Search\Item(
 *   index="custom-index-name",
 *   loader="some.service:method",
 * )
 */

Marking a field / getter for indexing

use Becklyn\SearchBundle\Mapping as Search;

class SomeEntity
{
    /**
     * @Search\Field()
     */
    private $headline;
    
    /**
     * @Search\Field()
     */
    public function getSomeData ()
    {
    }
}

Please note that a protected / private property test needs to have a way to access it, either via getter getTest(), isser isTest() or hasser hasTest().

@Search\Field() annotation

/**
 * @Search\Field(
 *   weight=1,
 *   fragments=null,
 *   format="plain",
 * )
 */

App configuration

The config belongs in app/config.yml.

A full configuration example:

becklyn_search:
    server: "127.0.0.1:9200"
    index: "app-index-{language}"
    format_processors:
        html: "app.content.renderer"            # short version 
        pdf:                                    # full version
            service: "pdf.ocr.text_extractor"
            html_post_process: true
    analyzers:
        analyzer_en:
            tokenizer: lowercase
            filter:
                - standard
                - lowercase
                - stemmer_en
                - asciifolding
                - default_filter_shingle
            char_filter:
                - filter_1
                - filter_2
    filters:
        stemmer_en:
            type: stemmer
            name: english
    unlocalized:
        analyzer: analyzer_default # a string value means that both index and search use the same analyzer
    localized:
        de:
            analyzer: 
                index: analyzer_en
                search: analyzer_en

Usage

Searching

Just get the becklyn.search.client service and search with it:

$searchResult = $this->get("becklyn.search.client")->search(
    string $query, 
    LanguageInterface $language = null, 
    array $itemClasses = [],
    array $filters = []
);

The method has three parameters:

Indexing

You can either index an entity manually via a CLI command, by calling a concrete service, or automatically by using the built-in doctrine event listeners.

Automatic indexing

Doctrine-managed entities are by default automatically indexed upon persistence/updating due to an built-in doctrine lifecycle event listener.

Disabling automatic indexing

The Becklyn\SearchBundle\Mapping\Item annotation allows you to configure how a search item is indexed. By default annotated classes will be indexed automatically whenever it's persisted or updated in Doctrine.

For use cases where you don't want your entities to be indexed immediatelly, e.g. when it needs further processing, you can set Becklyn\SearchBundle\Mapping\Item#autoIndex to false. This will force the Doctrine lifecycle handler to skip the automatic index update for this entity.

Warning This shifts the responsibility of indexing an entity from the bundle's code into the application's code by invoking the becklyn.search.indexer.

$this->get("becklyn.search.indexer")->index(SearchableEntityInterface $entity);

Or by running the Symfony CLI becklyn:search:index command. The index command isn't affected by this option.

Manual indexing

CLI command indexing

To (re-)index your entities from the CLI, the becklyn/search-bundle exposes the becklyn:search:index command. For more commands please see the CLI commands section.

The becklyn:search:index command indexes all entities irregardless of the autoIndex setting.

Programatic indexing

If you want to index programatically, just retrieve an instance of the becklyn.search.indexer service and call the index method:

$this->get("becklyn.search.indexer")->index(SearchableEntityInterface $entity);

Modifying the indexed data

The indexed data can be modified by listening to the "becklyn_search.index" event (or Becklyn\SearchBundle\Event\IndexEntityEvent::EVENT).

Your listener receives an Becklyn\SearchBundle\Event\IndexEntityEvent with the already serialized data and the entity to serialize:

use Becklyn\SearchBundle\Event\IndexEntityEvent;

public function myEventListener (IndexEntityEvent $event)
{
    $data = $event->getData();
    $entity = $event->getEntity();
    
    if (42 === $entity->getId())
    {
        $data["property-headline"] = "The answer to everything.";
        $event->setData($data);
    }
}

For now, the listener has to know the internal field name, unfortunately. This will be improved in a future version.

Entity Loader

A search item can define a custom entity loader:

use Becklyn\SearchBundle\Mapping as Search;

/**
 * @Search\Item(loader="custom.service:method")
 */
class Example
{
}

If a custom loader is defined, the service is fetched and the method called. The loader syntax translates to a call like this:

/**
 * @Search\Item(loader="custom.service:method")
 */ 
 
// --> will load the entities using
$container->get("custom.service")->method(int[] $ids = null);

The method must have an optional array parameter. If the loader is called with null, all entities should be returned. If the loader is called with int[], only the entities with an id in the int array have to be loaded.

It is not required to load entities for all provided ids, as the missing search results will just be removed from the result list.

The loader must return an EntityLoaderResult.

Filtering

In some cases the searched items should be filtered by a field other than the language.

use Becklyn\SearchBundle\Mapping as Search;

class SomeClass 
{
    /**
     * @Search\Filter("filter")
     */
    public $property;
    
    /**
     * @Search\Filter("another-filter")
     */
    public function method ()
    {
        // ...
    }
}

The annotation has a single required attribute: the name of the filter. This name needs to be unique across the app.

When searching, you can filter for hits with this specific filter values like this:

$searchResult = $this->get("becklyn.search.client")->search(
    "some search text", 
    $english, 
    [],
    [
        "filter" => "value",
        "another-filter" => "another value",
    ]
);

CLI Commands

The bundle exposes multiple CLI commands.

For additional parameters and options for each command, please directly consult the commands help, e.g. php bin/console becklyn:search:client --help.