feat: hasMany support

Author: hessman

lib/postgresql.js

@@ -810,8 +810,8 @@ PostgreSQL.prototype.buildJoin = function(model, filter) {
       }
       const relation =
         modelDefinition.settings.__relations__[candidateRelation];
-      // Only supports belongsTo and hasOne
-      if (relation.type !== 'belongsTo' && relation.type !== 'hasOne') {
+      // Only supports belongsTo, hasOne and hasMany
+      if (relation.type !== 'belongsTo' && relation.type !== 'hasOne' && relation.type !== 'hasMany') {
         debug('Invalid relation type for model %s for inner join', parentModel);
         break;
       }
@@ -958,7 +958,8 @@ PostgreSQL.prototype.buildJoin = function(model, filter) {
       innerJoin.relation.keyTo,
       true,
       innerJoin.prefix,
-    )}${innerJoin.relation.type === 'hasOne' ? '::uuid' : ''} `;
+    )}${innerJoin.relation.type === 'hasOne'
+      || innerJoin.relation.type === 'hasMany' ? '::uuid' : ''} `;
   }
 
   return {