This template shows how to enable full text search on firebase database elements by using an Algolia hosted search service.

See file functions/index.js for the code.

The dependencies are listed in functions/package.json .

As an example we'll be using a simple blog structure:

/functions-project-12345
    /blog-posts
        /key-123456
            text: "This is my first blog entry..."
            last_index_timestamp: 1234567890
        /key-123457
            text: "This is my second blog entry..."
            last_index_timestamp: 1234567891
    /search
        /queries
            /key-546789
                query: "first entry"
            /key-078234
                query: "second entry"
        /results
            /key-546789
                hits: [...
            /key-078234
                hits: [...
        /last_query_timestamp: 1234567892

Whenever a new blog post is created or modified a Function sends the content to be indexed to the Algolia instance. To perform new searches clients add the search query to the realtime database under /search/queries/ which triggers a Firebase function which performs the search on the Algolia instance. The results are written under the /search/results/ tree.

Create an Algolia account at www.algolia.com .

Enable Billing on your Firebase project by switching to the Blaze plan. You need billing enabled to allow external requests. For more information have a look at the pricing page .

Set the algolia.app_id and algolia.api_key Google Cloud environment variables to match the Algolia application ID and API key of your account. For this use:

firebase functions:config:set algolia.app_id=
"
myAlgoliaAppId
"
 algolia.api_key=
"
myAlgoliaApiKey
"