fix: ignore views on col/fk as target

Also refactor self relationship findRel logic

test/spec/fixtures/data.sql

@@ -775,3 +775,6 @@ INSERT INTO oid_test(id, oid_col, oid_array_col) VALUES (1, '12345', '{1,2,3,4,5
 TRUNCATE TABLE private.internal_job CASCADE;
 INSERT INTO private.internal_job (id, parent_id) VALUES (1, null);
 INSERT INTO private.internal_job (id, parent_id) VALUES (2, 1);
+
+TRUNCATE TABLE test.test CASCADE;
+INSERT INTO test.test (id, parent_id) VALUES (1, null), (2, 1);

test/spec/fixtures/privileges.sql

@@ -181,6 +181,11 @@ GRANT ALL ON TABLE
     , xmltest
     , oid_test
     , job
+    , series
+    , adaptation_notifications
+    , series_popularity
+    , test
+    , view_test
 TO postgrest_test_anonymous;
 
 GRANT INSERT ON TABLE insertonly TO postgrest_test_anonymous;

test/spec/fixtures/schema.sql

@@ -2605,3 +2605,28 @@ CREATE TABLE private.internal_job
 CREATE VIEW test.job AS
 SELECT j.id, j.parent_id
 FROM private.internal_job j;
+
+-- https://github.com/PostgREST/postgrest/issues/2238
+CREATE TABLE series (
+    id bigint PRIMARY KEY,
+    title text NOT NULL
+);
+
+CREATE TABLE adaptation_notifications (
+    id bigint PRIMARY KEY,
+    series bigint REFERENCES series(id),
+    status text
+);
+
+CREATE VIEW series_popularity AS
+SELECT id, random() AS popularity_score
+FROM series;
+
+-- https://github.com/PostgREST/postgrest/issues/1643
+CREATE TABLE test.test (
+  id BIGINT NOT NULL PRIMARY KEY,
+  parent_id BIGINT CONSTRAINT parent_test REFERENCES test(id)
+);
+
+CREATE OR REPLACE VIEW test.view_test AS
+  SELECT id FROM test.test;