When trying to manually trigger the firing of the autocomplete function to get a place using Google API

My goal is to retrieve the data from autocomplete.getPlace() when triggering this event manually.

Essentially, I have a function that captures the user's location in Lat/Lng format, and afterward, I aim to access other useful data using getPlace() such as place_id, photos, reference, etc.

Currently, I can perform almost all of the tasks successfully, including manually firing the event. However, it returns undefined. Here is the snippet of my code:

var latLng = response; //Obtained from another function
geocoder.geocode({'location': latLng}, function(results, status) {
    if (status === 'OK') {
        if (results[1]) {
            var fullAddress = results[0].formatted_address;

            var input = document.createElement("input");
                input.setAttribute("value", fullAddress);

            var autocomplete = new google.maps.places.Autocomplete(input);

            google.maps.event.addListener(autocomplete, 'place_changed', function () {
                var thisPlace = autocomplete.getPlace();
                console.log(thisPlace);
            });

            google.maps.event.trigger(autocomplete, 'place_changed');
        }
    }
});

While everything seems to be working fine here, the result from autocomplete.getPlace() shows up as undefined.

Interestingly, running the same function but with a native autocomplete element yields the correct result.

What could possibly be causing this issue?

Answer №1

It seems like you are looking for the JavaScript alternative to the Android Place Picker. Unfortunately, there is no direct widget available in the Places library that matches this functionality. Your best option would be to consider submitting a feature request for this specific tool.

The approach you are currently following involves:

  1. Reverse geocoding the user's latitude and longitude to find their nearest address.
  2. Finding places at that particular address.

While using geocoder.geocode() for step 1 is fine, it is crucial to carefully select the results as the first entry might not always provide relevant information, such as if it represents a bus stop.

A better solution would be to utilize Radar Search, which allows you to search for nearby places based on the original input of latitude and longitude. This method helps avoid inaccuracies that could arise from reverse geocoding placing the user's location far from its actual address. Additionally, you will need to send multiple requests for Details to retrieve detailed information about the closest N places.

Using Autocomplete for step 2 may not yield optimal results since it may not list all available places associated with an address.

Moreover, it is important not to trigger the place_changed event manually as this is not how it functions.

This event is usually triggered by the Autocomplete class after providing a PlaceResult. When a user selects a place from Autocomplete predictions, it necessitates a call to the Places Details service to access the desired details.

The place_changed event signifies when a PlaceResult becomes accessible for a selected place by the user. If the user inputs the name of a place not suggested by Autocomplete and hits Enter or if a Place detail request fails, a place_changed event will occur containing only the user input in the name property without any other defined properties.

If you manually trigger the place_changed event, there will not be a ready PlaceResult, resulting in autocomplete.getPlace() returning undefined.

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