Introducing the FacetWP REST API

The REST API lets you access raw FacetWP data, which you could use to build custom applications.

Enabling the API

By default, the FacetWP REST API is disabled. To enable it, use this hook:

add_filter( 'facetwp_api_can_access', function( $boolean ) {
    return current_user_can( 'manage_options' );
});

Endpoint URL

<example.com>/wp-json/facetwp/v1/fetch

This endpoint expects a POST request with 1 parameter: data. This parameter should be a string (a stringified JSON object).

Example

Let’s retrieve cars with make = audi, and also grab choices for the vehicle_type facet.

Here’s the request JSON, before getting stringified:

let request_data = {
  'facets': {
    'make': ['audi'],
    'vehicle_type': []
  },
  'query_args': {
    'post_type': 'cars',
    'posts_per_page': 4,
    'paged': 1
  }
}

Here’s the request using javascript’s fetch() method:

const response = fetch('https://yoursite.com/wp-json/facetwp/v1/fetch', {
  'method': 'POST',
  'headers': {
    'Authorization': 'Basic ' + btoa('username:password') // base64-encoded
  },
  'body': {
    'data': JSON.stringify(request_data) // stringified!
  }
})
.then(function(response) {
  console.log(response);
});

Response data

{
  "results":[
    1,
    2,
    3,
    4
  ],
  "facets":{
    "make":{
      "name":"make",
      "label":"Make",
      "type":"checkboxes",
      "selected":[
        "audi"
      ],
      "choices":[
        {
          "value":"audi",
          "label":"Audi",
          "depth":0,
          "count":20
        }
      ]
    },
    "vehicle_type":{
      "name":"vehicle_type",
      "label":"Vehicle Type",
      "type":"checkboxes",
      "selected":[

      ],
      "choices":[
        {
          "value":"car",
          "label":"Car",
          "depth":0,
          "count":17
        },
        {
          "value":"suv",
          "label":"SUV",
          "depth":0,
          "count":3
        },
        {
          "value":"minivan",
          "label":"Minivan",
          "depth":0,
          "count":0
        },
        {
          "value":"truck",
          "label":"Truck",
          "depth":0,
          "count":0
        },
        {
          "value":"van",
          "label":"Van",
          "depth":0,
          "count":0
        }
      ]
    }
  },
  "pager":{
    "page":1,
    "per_page":4,
    "total_rows":20,
    "total_pages":5
  }
}