Autocomplete from GIS list of CRSs..

..using django-autocomplete-light, in both the admin area and the
end-user form

Closes #32

apps/map/admin.py

@@ -1,7 +1,21 @@
 from django.contrib import admin
+from django import forms
+
+from dal import autocomplete
 from leaflet.admin import LeafletGeoAdmin
 
-from .models import CaseStudy
+from .models import CaseStudy, SpatialRefSys
+
+
+class CaseStudyAdminForm(forms.ModelForm):
+    class Meta:
+        model = CaseStudy
+        widgets = {
+            'coordinate_reference_system': autocomplete.ModelSelect2(
+                url='srs-autocomplete'
+            )
+        }
+        fields = '__all__'
 
 
 class CaseStudyAdmin(LeafletGeoAdmin):
@@ -30,4 +44,8 @@ class CaseStudyAdmin(LeafletGeoAdmin):
         ))
     unapprove.short_description = "Un-approve selected case studies"
 
+    form = CaseStudyAdminForm
+
+
 admin.site.register(CaseStudy, CaseStudyAdmin)
+admin.site.register(SpatialRefSys)

apps/map/forms.py

@@ -2,9 +2,11 @@ from django.urls import reverse
 from django import forms
 from django.utils.translation import ugettext as _
 from django.utils.safestring import mark_safe
+
 from crispy_forms.helper import FormHelper
 from crispy_forms.layout import Submit, Layout, HTML, Fieldset, Div
 from crispy_forms.bootstrap import Tab, TabHolder, PrependedText, FormActions
+from dal import autocomplete
 from leaflet.forms.widgets import LeafletWidget
 
 from .models import CaseStudy
@@ -68,6 +70,7 @@ class ShortCaseStudyForm(BaseCaseStudyForm):
             'community_voices'
         ]
 
+
 class LongCaseStudyForm(BaseCaseStudyForm):
     """Long version of the CaseStudy form."""
 
@@ -117,6 +120,9 @@ class LongCaseStudyForm(BaseCaseStudyForm):
             choices=POSITIVE_CASE_TYPE_CHOICES
         )
 
+        self.fields['project_owners'].required = True
+        self.fields['shareholders'].required = True
+
         self.helper.form_action = reverse('long-form')
         self.helper.layout = Layout(
             TabHolder(
@@ -269,3 +275,8 @@ class LongCaseStudyForm(BaseCaseStudyForm):
 
     class Meta(BaseCaseStudyForm.Meta):
         exclude = ('approved',)
+        widgets = {
+            'coordinate_reference_system': autocomplete.ModelSelect2(
+                url='srs-autocomplete'
+            )
+        }

apps/map/migrations/0051_auto_20180404_0024.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2018-04-04 00:24
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('map', '0050_auto_20180402_1237'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='casestudy',
+            name='coordinate_reference_system',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='gis.PostGISSpatialRefSys'),
+        ),
+    ]

apps/map/models.py

@@ -1,17 +1,32 @@
 import datetime
 from urllib import parse
+
 from django.contrib.gis.db import models
 from django.contrib.auth.models import User
-from django_extensions.db.fields import AutoSlugField
+from django.db import connection
-from django_countries.fields import CountryField
 from django.utils.translation import ugettext as _
 from django.template.defaultfilters import slugify
+
+from django_extensions.db.fields import AutoSlugField
+from django_countries.fields import CountryField
 from multiselectfield import MultiSelectField
 from phonenumber_field.modelfields import PhoneNumberField
 
 from . import validators
 
 
+class SpatialRefSys(connection.ops.spatial_ref_sys()):
+    def __str__(self):
+        return self.__unicode__()
+
+    def __unicode__(self):
+        return '{0.auth_name}:{0.auth_srid} {0.name}'.format(self)
+
+    class Meta:
+        proxy = True
+        verbose_name = "spatial reference system"
+
+
 class Shapefile(models.Model):
     file = models.FileField(
         upload_to='shapefiles/',
@@ -1007,13 +1022,9 @@ class CaseStudy(models.Model):
     )
 
     # 4.3.2
-    coordinate_reference_system = models.CharField(
+    coordinate_reference_system = models.ForeignKey(
-        verbose_name=_("Coordinate reference system"),
+        SpatialRefSys, null=True, blank=True,
-        help_text=_("Enter the coordinate reference system of the shapefiles."),
+        default=4326
-        max_length=12,
-        default=None,
-        null=True,
-        blank=True
     )
 
     # 4.3.3

apps/map/templates/map/form.html

@@ -1,8 +1,5 @@
 {% extends "base_page.html" %}
-{% load compress %}
+{% load compress crispy_forms_tags i18n leaflet_tags static %}
-{% load crispy_forms_tags %}
-{% load i18n %}
-{% load leaflet_tags %}
 
 
 {% block stylesheets %}
@@ -20,6 +17,8 @@
 {% endblock %}
 
 {% block scripts %}
+  <script type="text/javascript" src="{% static 'admin/js/vendor/jquery/jquery.js' %}"></script>
+  {{ form.media }}
   {% leaflet_js %}
   <script type="text/javascript">
     YourGeometryField = L.GeometryField.extend({

apps/map/urls.py

@@ -8,11 +8,15 @@ from . import views
 
 urlpatterns = [
     url(r'^$', RedirectView.as_view(url=reverse_lazy('map')), name='index'),
-    url(r'^data.geojson$', GeoJSONLayerView.as_view(model=CaseStudy, geometry_field='location'), name='data'),
+
     url(r'^case-study/create/?$', views.Create.as_view(), name="create"),
     url(r'^case-study/create/short/?$', views.ShortForm.as_view(), name='short-form'),
     url(r'^case-study/create/long/?$', views.LongForm.as_view(), name='long-form'),
     url(r'^case-study/create/success/?$', views.FormSuccess.as_view(), name='form-success'),
     url(r'^case-study/(?P<slug>[-\w]+)/?$', views.CaseStudyDetail.as_view(), name='detail'),
-    url(r'^map/?$', views.Map.as_view(), name='map')
+    url(r'^map/?$', views.Map.as_view(), name='map'),
+
+    # API
+    url(r'^data.geojson$', GeoJSONLayerView.as_view(model=CaseStudy, geometry_field='location'), name='data'),
+    url(r'^srs-autocomplete/$', views.SpatialRefSysAutocomplete.as_view(), name='srs-autocomplete'),
 ]

apps/map/views.py

@@ -1,11 +1,15 @@
 from django.core.mail import send_mail
 from django.conf import settings
+from django.db.models import Q
 from django.views.generic import DetailView
 from django.views.generic.base import TemplateView
 from django.views.generic.edit import CreateView
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.urls import reverse
-from .models import CaseStudy
+
+from dal import autocomplete
+
+from .models import CaseStudy, SpatialRefSys
 from .forms import ShortCaseStudyForm, LongCaseStudyForm
 
 NOTIFY_MESSAGE = """
@@ -72,3 +76,16 @@ class CaseStudyDetail(DetailView):
     template_name = "map/detail.html"
     model = CaseStudy
     context_object_name = "case_study"
+
+
+class SpatialRefSysAutocomplete(autocomplete.Select2QuerySetView):
+    def get_queryset(self):
+        qs = SpatialRefSys.objects.all()
+
+        if self.q:
+            qs = qs.filter(
+                Q(auth_name__icontains=self.q)
+                | Q(auth_srid__icontains=self.q)
+            )
+
+        return qs

ojusomap/settings.py

@@ -47,6 +47,8 @@ INSTALLED_APPS = [
     'cas_server',
     'compressor',
     'crispy_forms',
+    'dal',
+    'dal_select2',
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',

requirements.txt

@@ -5,6 +5,7 @@ boto3==1.4.7
 Django==1.11.6
 django-appconf==1.0.2
 django-anymail==2.0
+django-autocomplete-light==3.2.10
 django-avatar==4.0.1
 django-bootstrap3==8.2.3
 django-braces==1.11.0