# Geocode an address with Algolia

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## Geocode an address with Algolia

This example shows you how to use an autocomplete address smart field to update a PostreSQL geography point (lat, long).

{% embed url="<https://youtu.be/SWldaV29s9U>" %}

### Requirements

* An admin backend running on forest-express-sequelize
* An algolia account
* [algoliasearch](https://www.npmjs.com/package/algoliasearch) npm package

### How it works

#### Directory: /models

This directory contains the `events.js` file where the model is declared.

{% code title="models/events.js" %}

```javascript
module.exports = (sequelize, DataTypes) => {
  const Model = sequelize.define(
    'events',
    {
      name: {
        type: DataTypes.STRING,
        primaryKey: true,
      },
      locationGeo: {
        type: DataTypes.GEOMETRY('POINT', 4326),
      },
      address: {
        type: DataTypes.STRING,
      },
    },
    {
      tableName: 'events',
      underscored: true,
      timestamps: false,
      schema: process.env.DATABASE_SCHEMA,
    }
  );

  Model.removeAttribute('id');
  Model.associate = () => {};

  return Model;
};
```

{% endcode %}

#### Directory: /forest

This directory contains the `events.js` file where the Smart Field `Location setter`is declared.\
\
This smart field will be used to update the value of the `address`and `locationGeo` fields.

{% code title="/forest/events.js" %}

```javascript
const algoliasearch = require('algoliasearch');

const places = algoliasearch.initPlaces(
  process.env.PLACES_APP_ID,
  process.env.PLACES_API_KEY
);

async function getLocationCoordinates(query) {
  try {
    const location = await places.search({ query, type: 'address' });
    console.log('search location coordinates result', location.hits[0]._geoloc);
    return location.hits[0]._geoloc;
  } catch (err) {
    console.log(err);
    return null;
  }
}

async function setEvent(event, query) {
  const coordinates = await getLocationCoordinates(query);
  event.address = query;
  event.locationGeo = `{"type": "Point", "coordinates": [${coordinates.lat}, ${coordinates.lng}]}`;
  console.log('new address', event.address);
  console.log('new location', event.locationGeo);
  return event;
}

collection('events', {
  fields: [
    {
      field: 'Location setter',
      type: 'String',
      // Get the data to be displayed.
      get: (event) => event.address,
      // Update using Algolia.
      set: (event, query) => setEvent(event, query),
    },
  ],
});
```

{% endcode %}

{% hint style="info" %}
The field `Location setter` should use the [address edit widget](https://docs.forestadmin.com/user-guide/collections/customize-your-fields/edit-widgets#address) to enable address autocomplete.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.forestadmin.com/documentation/reference-guide/integrations/algolia/geocode-an-address-with-algolia.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.