Merge pull request #256 from datamade/feature/jfc/import-geographies

Import shapes with new management command

README.md

@@ -115,6 +115,12 @@ There are tens of thousands of bills and hundreds of events in Chicago legislati
 pupa update chicago bills window=0 && pupa update chicago events window=0
 ```
 
+Finally, make sure to load shapes into the database so that Posts can be associated with their corresponding boundaries:
+
+```bash
+python manage.py import_shapes data/final/shapes/chicago_shapes.json
+```
+
 ## Setup CSS, Images, and other static resources
 ```bash
 python manage.py collectstatic

data/.gitignore

@@ -0,0 +1 @@
+raw/shapes/*.json

data/Makefile

@@ -0,0 +1,12 @@
+BOUNDARIES_SOURCE := "https://data.cityofchicago.org/api/geospatial/sp34-6z76?method=export&format=GeoJSON"
+
+.PHONY: all clean
+all: final/shapes/chicago_shapes.json
+clean:
+	rm -Rf final/shapes/chicago_shapes.json
+
+raw/shapes/chicago_shapes.json:
+	curl $(BOUNDARIES_SOURCE) > $@
+
+final/shapes/chicago_shapes.json: raw/shapes/chicago_shapes.json
+	cat $< | python3 scripts/transform_shapes.py > $@

data/scripts/transform_shapes.py

@@ -0,0 +1,12 @@
+import json
+import sys
+
+boundaries = json.load(sys.stdin)
+
+for feature in boundaries['features']:
+    division_id = 'ocd-division/country:us/state:il/place:chicago/ward:{}'.format(
+        feature['properties']['ward']
+    )
+    feature['properties']['division_id'] = division_id
+
+json.dump(boundaries, sys.stdout)