Add PostGIS GeoJSON support

Works for GET, POST, PATCH, PUT, DELETE, RPC.

test/spec/fixtures/data.sql

@@ -784,3 +784,14 @@ INSERT INTO test.bulk_update_items (id, name, observation) VALUES (1, 'item-1',
 
 TRUNCATE TABLE test.bulk_update_items_cpk CASCADE;
 INSERT INTO test.bulk_update_items_cpk (id, name, observation) VALUES (1, 'item-1', NULL), (2, 'item-2', NULL), (3, 'item-3', NULL);
+
+TRUNCATE TABLE shops CASCADE;
+INSERT INTO shops(id, address, shop_geom) VALUES(1, '1369 Cambridge St', 'SRID=4326;POINT(-71.10044 42.373695)');
+INSERT INTO shops(id, address, shop_geom) VALUES(2, '757 Massachusetts Ave', 'SRID=4326;POINT(-71.10543 42.366432)');
+INSERT INTO shops(id, address, shop_geom) VALUES(3, '605 W Kendall St', 'SRID=4326;POINT(-71.081924 42.36437)');
+
+TRUNCATE TABLE shop_bles CASCADE;
+INSERT INTO shop_bles(id, name, coords, shop_id, range_area) VALUES(1, 'Beacon-1', 'SRID=4326;POINT(-71.10044 42.373695)', 1,
+  extensions.ST_GeomFromGeoJSON('{"type": "Polygon", "coordinates": [ [ [ -71.10045254230499, 42.37387083326593 ], [ -71.10048070549963, 42.37377126199953 ], [ -71.10039688646793, 42.37375838212269 ], [ -71.10037006437777, 42.37385844878863 ], [ -71.10045254230499, 42.37387083326593 ] ] ]}'));
+INSERT INTO shop_bles(id, name, coords, shop_id, range_area) VALUES(2, 'Beacon-2', 'SRID=4326;POINT(-71.10044 42.373695)', 1,
+  extensions.ST_GeomFromGeoJSON('{"type": "Polygon", "coordinates": [ [ [ -71.10034391283989, 42.37385299961788 ], [ -71.10036939382553, 42.373756895982865 ], [ -71.1002916097641, 42.373745997623224 ], [ -71.1002641171217, 42.37384408279195 ], [ -71.10034391283989, 42.37385299961788 ] ] ]}'));

test/spec/fixtures/privileges.sql

@@ -188,6 +188,8 @@ GRANT ALL ON TABLE
     , view_test
     , bulk_update_items
     , bulk_update_items_cpk
+    , shops
+    , shop_bles
 TO postgrest_test_anonymous;
 
 GRANT INSERT ON TABLE insertonly TO postgrest_test_anonymous;

test/spec/fixtures/schema.sql

@@ -2649,3 +2649,23 @@ CREATE TABLE test.bulk_update_items_cpk (
   observation TEXT,
   PRIMARY KEY (id, name)
 );
+
+create extension if not exists postgis with schema extensions;
+
+create table shops (
+  id        int primary key
+, address   text
+, shop_geom extensions.geometry(POINT, 4326)
+);
+
+create table shop_bles (
+  id         int primary key
+, name       text
+, coords     extensions.geometry(POINT, 4326)
+, range_area extensions.geometry(POLYGON, 4326)
+, shop_id    int references shops(id)
+);
+
+create function get_shop(id int) returns shops as $$
+  select * from shops where id = $1;
+$$ language sql;