Generate ON DELETE CASCADE for { many }

Closes: #191 PR-URL: #196
metarhia · Aug 6, 2021 · f90cc46 · f90cc46
1 parent 0263488
commit f90cc46
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Use `options.logger` and global `console` if no `options.console` for backward
   compatibility, fallback will be better than crash
+- Add `{ delete: 'cascade' }` to generate `ON DELETE CASCADE` for `{ many }`
 
 ## [1.2.0][] - 2021-08-04
 

diff --git a/lib/pg.js b/lib/pg.js
@@ -56,13 +56,13 @@ const createIndex = (entityName, indexName, def, entity) => {
 };
 
 const createMany = (entityName, { many }, model) => {
-  const fromEntity = toLowerCamel(entityName);
-  const toEntity = toLowerCamel(many);
+  const from = toLowerCamel(entityName);
+  const to = toLowerCamel(many);
   const crossName = entityName + many;
   const crossReference = {
-    [fromEntity]: { name: fromEntity, type: entityName, required: true },
-    [toEntity]: { name: toEntity, type: many, required: true },
-    [crossName]: { name: crossName, primary: [fromEntity, toEntity] },
+    [from]: { name: from, type: entityName, delete: 'cascade', required: true },
+    [to]: { name: to, type: many, delete: 'cascade', required: true },
+    [crossName]: { name: crossName, primary: [from, to] },
   };
   const entity = new Schema(crossName, crossReference);
   model.entities.set(crossName, entity);