Name custom types and domains on OPTIONS requests (#640)

CHANGELOG.md

@@ -7,6 +7,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+- Output names of used-defined types (instead of 'USER-DEFINED') - @martingms
+
 ### Fixed
 - Do not apply limit to parent items - @ruslantalpa
 

src/PostgREST/DbStructure.hs

@@ -289,13 +289,13 @@ allColumns tabs =
                         CASE
                             WHEN bt.typelem <> 0::oid AND bt.typlen = (-1) THEN 'ARRAY'::text
                             WHEN nbt.nspname = 'pg_catalog'::name THEN format_type(t.typbasetype, NULL::integer)
-                            ELSE 'USER-DEFINED'::text
+                            ELSE format_type(a.atttypid, a.atttypmod)
                         END
                         ELSE
                         CASE
                             WHEN t.typelem <> 0::oid AND t.typlen = (-1) THEN 'ARRAY'::text
                             WHEN nt.nspname = 'pg_catalog'::name THEN format_type(a.atttypid, NULL::integer)
-                            ELSE 'USER-DEFINED'::text
+                            ELSE format_type(a.atttypid, a.atttypmod)
                         END
                     END::information_schema.character_data AS data_type,
                 information_schema._pg_char_max_length(information_schema._pg_truetypid(a.*, t.*), information_schema._pg_truetypmod(a.*, t.*))::information_schema.cardinal_number AS character_maximum_length,

test/Feature/StructureSpec.hs

@@ -204,7 +204,7 @@ spec = do
             "updatable": true,
             "schema": "test",
             "name": "enum",
-            "type": "USER-DEFINED",
+            "type": "test.enum_menagerie_type",
             "maxLen": null,
             "enum": [
               "foo",