Full-text search with Elasticsearch

Elasticsearch is a search server based on Lucene, which is an open source information-retrieval library. Elasticsearch provides a distributed full-text search engine with a RESTful web interface and schema-free JSON documents. In this recipe, we will implement full-text search using Elasticsearch for our Flask application.

Getting ready

We will use a Python library called pyelasticsearch, which makes dealing with Elasticsearch a lot easier:

$ pip install pyelasticsearch

We also need to install the Elasticsearch server itself. This can be downloaded from http://www.elasticsearch.org/download/. Unpack the package downloaded and run the following command:

$ bin/elasticsearch

This will start the Elasticsearch server on http://localhost:9200/ by default.

How to do it…

To perform the integration, we will start by adding the Elasticsearch object to the application's configuration, that is, my_app/__init__.py:

from pyelasticsearch import ElasticSearch
from...