How to hook up Google Maps to GeoDjango? - django

Question

GeoDjango docs don't tell anything about hooking up GMap and I don't understand what's going on.
models.py:
from django.contrib.gis.db import models
class Location(models.Model):
name = models.CharField(max_length=100)
coords = models.PointField(srid=4326, blank=True, null=True)
forms.py:
from django.contrib.gis import forms
class LocationForm(forms.ModelForm):
class Meta:
model = Location
fields = ['coords', 'name']
In the add_location.html such code was automatically generated for 'coords':
<div id="div_id_coords" class="form-group">
<div class="controls ">
<div id="id_coords_div_map">
<div id="id_coords_map"></div>
<span class="clear_features">
Delete
</span>
<textarea id="id_coords" class="vSerializedField required" cols="150" rows="10" name="coords"></textarea>
<script type="text/javascript">
var map_options = {};
var options = {
geom_name: 'Point',
id: 'id_coords',
map_id: 'id_coords_map',
map_options: map_options,
map_srid: 4326,
name: 'coords'
};
var geodjango_coords = new MapWidget(options);
</script>
</div>
</div>
</div>
In my js file I am trying to get coordinates of marker into my model:
var mapOptions = {...};
map = new google.maps.Map($('#id_coords_map')[0], mapOptions);
map.addListener('click', function(e){
placeMarker(e.latLng, map);
var position = marker.getPosition();
});
var marker;
function placeMarker(latLng, map) {
marker = new google.maps.Marker({...});
return marker
}
But it doesn't work. It even doesn't come to getting coordinates because I get the error in the chrome console (when I push button Add location at my form):
Uncaught ReferenceError: MapWidget is not defined
related to the line:
var geodjango_coords = new MapWidget(options);
And as validation error at the form field COORDS I can see - "No geometry value provided"
I guessed that something is wrong with connecting GMap and checked what widget was in COORDS field (via self.fields['coords'].widget in the __init__ of ModelForm) and it turned out that it was OpenLayers widget.
What should I do to get GMap as widget and get marker's coords saved in the instance?
P.S. HEAD content at the page (it is about connecting to google maps):
<script type="text/javascript" charset="UTF-8" src="https://maps.googleapis.com/maps-api-v3/api/js/25/5/intl/ru_ALL/common.js"></script>
<script type="text/javascript" charset="UTF-8" src="https://maps.googleapis.com/maps-api-v3/api/js/25/5/intl/ru_ALL/map.js"></script>
<script type="text/javascript" charset="UTF-8" src="https://maps.googleapis.com/maps-api-v3/api/js/25/5/intl/ru_ALL/util.js"></script>
<script type="text/javascript" charset="UTF-8" src="https://maps.googleapis.com/maps-api-v3/api/js/25/5/intl/ru_ALL/onion.js"></script>
<script type="text/javascript" charset="UTF-8" src="https://maps.googleapis.com/maps-api-v3/api/js/25/5/intl/ru_ALL/stats.js"></script>
<script type="text/javascript" charset="UTF-8" src="https://maps.googleapis.com/maps-api-v3/api/js/25/5/intl/ru_ALL/controls.js"></script>
<script type="text/javascript" charset="UTF-8" src="https://maps.googleapis.com/maps-api-v3/api/js/25/5/intl/ru_ALL/marker.js"></script>

Answer 1

adding {{ form.media }} into HEAD has taken away the error 'Uncaught ReferenceError: MapWidget is not defined' from the Chrome console.. but it didn't solve the problem - please, look at -
GeoDjango Google Maps - error - No geometry value provided