Pushing related entries to an Algolia index

It's possible to transform the data from Statamic before it gets pushed to an Algolia index, but here's some help on transforming the data to push related data into the index.

Consider the following index in config/statamic/search.php:

'videos' => [
'driver' => 'algolia',
'searchables' => 'collection:videos',
'fields' => ['title', 'artwork', 'tags', 'description', 'id', 'author'],
],

Here we have 6 fields that we wish to be in our Algolia index. In this instance author is a related entry in another collection. If we were to update the index currently, all we'd see is the entry id from the related collection which isn't very helpful to our Algolia search results.

Enter transformers - "robots in disguise", I know you just sang that in your head!

If we update our index to include transformers:

'videos' => [
'driver' => 'algolia',
'searchables' => 'collection:videos',
'fields' => ['title', 'artwork', 'tags', 'description', 'id', 'author'],
'transformers' => [
'author' => function ($author) {
$entry = Entry::find($author);
return [
'author_name' => "{$entry->author_first_name} {$entry->title}",
];
}
]
],

We pass the entry id into a function, lookup the entry by its id, we can then push the author name - where our blueprint has author_first_name as a field of course.

Happy transforming.

Contributed by Steven Grant

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