Add address settings

Prior to this change to modify the address javascript you had to fork
and edit the `address.js` manually. This change let to define a setting
dict to customize the address.js.

e.g.

```
ADDRESS_SETTINGS = {
    'country': ['AU'],
}
```
it will be injected in the address.js to limit the address to the
australian country.

To achieve that I move the address.js from a static file to a
templateview and threat the address.js file as a django template.

The TemplateView is responsible to retrieve the settings and generate
the context for the template.

There is a requirement to make django-address works now. The url must be
added in your project:

e.g.

```
urlpatterns = [
    # ... other urls
    path('address/', include('address.urls')),
]
```

README.md

@@ -30,6 +30,15 @@ INSTALLED_APPS = [
 ]
 ```
 
+Then, add the url in your urls.py
+
+```
+urlpatterns = [
+    # other urls...
+    path('address/', include('address.urls')),
+]
+```
+
 You can either store your Google API key in an environment variable as `GOOGLE_API_KEY` or you can
  specify the key in `settings.py`. If you have an environment variable set it will override what you put in settings.py.
  For more information, including enabling the Google Places API, refer to [the example site](https://github.com/furious-luke/django-address/blob/master/example_site/README.md).
@@ -38,6 +47,16 @@ You can either store your Google API key in an environment variable as `GOOGLE_A
 GOOGLE_API_KEY = 'AIzaSyD--your-google-maps-key-SjQBE'
 ```
 
+## Settings
+Is possible to specify custom settings in your settings module.
+For example, to get address only for the Australia add these to your settings
+
+```python
+ADDRESS_SETTINGS = {
+    "country": ["AU"]
+}
+```
+
 # The Model
 
 The rationale behind the model structure is centered on trying to make

address/static/address/js/address.js → address/templates/address/address.js

@@ -1,12 +1,15 @@
 $(function () {
 	$('input.address').each(function () {
+		let address_settings = {{ address_settings|safe }};
 		var self = $(this);
 		var cmps = $('#' + self.attr('name') + '_components');
 		var fmtd = $('input[name="' + self.attr('name') + '_formatted"]');
 		self.geocomplete({
 			details: cmps,
-			detailsAttribute: 'data-geo'
-		}).change(function () {
+			detailsAttribute: 'data-geo',
+			...address_settings,
+			}
+		).change(function () {
 			if (self.val() != fmtd.val()) {
 				var cmp_names = [
 					'country',

address/urls.py

@@ -0,0 +1,7 @@
+from django.urls import path
+
+from .views import AddressJS
+
+urlpatterns = [
+    path('address.js', AddressJS.as_view(), name="address.js"),
+]

address/views.py

@@ -0,0 +1,14 @@
+import json
+from django.views.generic import TemplateView
+from django.conf import settings
+
+
+class AddressJS(TemplateView):
+    content_type = "text/javascript"
+    template_name = "address/address.js"
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data()
+        address_settings = getattr(settings, "ADDRESS_SETTINGS", {})
+        context["address_settings"] = json.dumps(address_settings)
+        return context

address/widgets.py

@@ -5,6 +5,7 @@
 from django.conf import settings
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
+from django.urls import reverse
 
 from .models import Address
 
@@ -32,7 +33,7 @@ class Media:
         js = [
             'https://maps.googleapis.com/maps/api/js?libraries=places&key=%s' % settings.GOOGLE_API_KEY,
             'js/jquery.geocomplete.min.js',
-            'address/js/address.js',
+            reverse('address.js'),
         ]
 
         if JQUERY_URL:

example_site/example_site/urls.py

@@ -1,9 +1,12 @@
 from django.contrib import admin
-from django.urls import path
+from django.urls import path, include
 
-from person import views as person
+from person import views as person_views
+from address import views as address_views
+from address import urls as address_urls
 
 urlpatterns = [
-    path('', person.home, name='home'),
+    path('', person_views.home, name='home'),
     path('admin/', admin.site.urls),
+    path('address/', include('address.urls')),
 ]

example_site/person/views.py

@@ -2,10 +2,9 @@
 from django.shortcuts import render
 
 from address.models import Address
-from .forms import PersonForm
-
 
 def home(request):
+    from .forms import PersonForm
     success = False
     addresses = Address.objects.all()
     if settings.GOOGLE_API_KEY:

setup.py

@@ -3,7 +3,7 @@
 
 from setuptools import find_packages, setup
 
-version = '0.2.5'
+version = '0.2.6'
 
 if sys.argv[-1] == 'tag':
     print("Tagging the version on github:")