pg-postgis-types

Use PostGIS geometry types with node-postgres.

This module registers parsers for the PostGIS geometry types. You can also plug in your own WKB parser.

Installation

npm install pg-postgis-types

Documentation

postgis(pg, connection, callback)

Fetches the OIDs for the given types.

Parameters

Callback is called with an error argument.

postgis.isGeometryType(oid)

Returns true if the given OID is a geometry or geography type

Parameters

postgis.setGeometryParser(parser)

Setup a custom parser for geometry/geography columns. The parser is a function that accepts one argument for the string value to parse. The library uses wkx by default to parse goemetries. You can use this if you want to use your own WKB parser.

Parameters

Example

var postgis = require('pg-postgis-types');

postgis(pg, connection, (err, oids) {
  if (err) {
    throw err;
  }

  pg.connect(connection, function (err, client, done) {
    if (err) {
      return callback(err);
    }

    var sql = "SELECT ST_GeomFromText('POINT(1 2)') AS geom";

    client.query(sql, null, function (err, results) {
      done();

      if (err) {
        throw err;
      }

      var geojson = results.rows[0].geom.toGeoJSON();

      // do something cool with geojson
    });
  });
});