How to auto fill latitude and longitude fields in Django2.0.6?

[PrateekG]

Hi Experts,

I have created an address form in Django2.0.6+Mysql+Python3.6 and it has location,address,latitude,longitude fields.

I want to auto filled the latitude and longitude fields once user entered the address.

For this purpose I have written following code-

In models.py-

from location_field.models.plain import PlainLocationField
class Store(models.Model):
    location = PlainLocationField(based_fields=['address'], zoom=7, null=True)
    @property
    def latitude(self):
        latitiude, _ = self.location.split(',')
        return latitiude

    @property
    def longitude(self):
        _, longitude = self.location.split(',')
        return longitude

in admin.py-

class StoreAdmin(admin.ModelAdmin):
    list_display = ('id', 'chain', 'name', 'building', 'description', 'postal_code', 'address', 'phone',
                'latitude', 'longitude', 'opening_hours')
    readonly_fields = ('latitude', 'longitude',)

But when I open my address form I am getting following error in browser-

Error:
Exception Type: ValueError
Exception Value:    
not enough values to unpack (expected 2, got 1)
Exception Location: E:\mycms\models.py in latitude, line 230

The complete server log is as below-

Error:
Internal Server Error: /mycms/store/
Traceback (most recent call last):
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\db\models\options.py", line 566, in get_field
    return self.fields_map[field_name]
KeyError: 'latitude'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\contrib\admin\utils.py", line 276, in lookup_field
    f = _get_non_gfk_field(opts, name)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\contrib\admin\utils.py", line 307, in _get_non_gfk_field
    field = opts.get_field(name)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\db\models\options.py", line 568, in get_field
    raise FieldDoesNotExist("%s has no field named '%s'" % (self.object_name, field_name))
django.core.exceptions.FieldDoesNotExist: Store has no field named 'latitude'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\core\handlers\exception.py", line 35, in inner
    response = get_response(request)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\core\handlers\base.py", line 158, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\core\handlers\base.py", line 156, in _get_response
    response = response.render()
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\response.py", line 106, in render
    self.content = self.rendered_content
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\response.py", line 83, in rendered_content
    content = template.render(context, self._request)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\backends\django.py", line 61, in render
    return self.template.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 175, in render
    return self._render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\loader_tags.py", line 155, in render
    return compiled_parent._render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\loader_tags.py", line 155, in render
    return compiled_parent._render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\loader_tags.py", line 67, in render
    result = block.nodelist.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\loader_tags.py", line 67, in render
    result = block.nodelist.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\template\library.py", line 214, in render
    _dict = self.func(*resolved_args, **resolved_kwargs)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\contrib\admin\templatetags\admin_list.py", line 326, in result_list
    'results': list(results(cl))}
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\contrib\admin\templatetags\admin_list.py", line 302, in results
    yield ResultList(None, items_for_result(cl, res, None))
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\contrib\admin\templatetags\admin_list.py", line 293, in __init__
    super().__init__(*items)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\contrib\admin\templatetags\admin_list.py", line 212, in items_for_result
    f, attr, value = lookup_field(field_name, result, cl.model_admin)
  File "C:\Users\hitman\AppData\Local\Continuum\anaconda3\lib\site-packages\django\contrib\admin\utils.py", line 287, in lookup_field
    attr = getattr(obj, name)
  File "E:\mycms\models.py", line 214, in latitude
    latitiude, _ = self.location.split(',')
ValueError: not enough values to unpack (expected 2, got 1)

Please someone help me to solve the issue!