Fix unique foreign key in view (#1395)

test/fixtures/data.sql

@@ -512,3 +512,11 @@ TRUNCATE TABLE app_users CASCADE;
 INSERT INTO app_users (id, email, "password") VALUES (1, 'test@123.com','pass');
 INSERT INTO app_users (id, email, "password") VALUES (2, 'abc@123.com','pass');
 INSERT INTO app_users (id, email, "password") VALUES (3, 'def@123.com','pass');
+
+TRUNCATE TABLE private.pages CASCADE;
+INSERT INTO private.pages VALUES (1, 'http://postgrest.org/en/v6.0/api.html');
+INSERT INTO private.pages VALUES (2, 'http://postgrest.org/en/v6.0/admin.html');
+
+TRUNCATE TABLE private.referrals CASCADE;
+INSERT INTO private.referrals VALUES ('github.com', 1);
+INSERT INTO private.referrals VALUES ('hub.docker.com', 2);

test/fixtures/privileges.sql

@@ -104,6 +104,8 @@ GRANT ALL ON TABLE
     , getallprojects_view
     , get_projects_above_view
     , web_content
+    , pages
+    , referrals
 TO postgrest_test_anonymous;
 
 GRANT INSERT ON TABLE insertonly TO postgrest_test_anonymous;

test/fixtures/schema.sql

@@ -1759,3 +1759,17 @@ create table app_users (
   email    text       unique not null,
   password text       not null
 );
+
+create table private.pages (
+  link int not null unique
+, url text
+);
+
+create table private.referrals (
+  site text
+, link int references private.pages(link) not null
+);
+
+create view test.pages as select * from private.pages;
+
+create view test.referrals as select * from private.referrals;