addressing PR comments

Author: ymc9

packages/clients/tanstack-query/src/utils/mutator.ts

@@ -204,10 +204,14 @@ function createMutate(queryModel: string, currentData: any, newData: any, schema
                 // default value for DateTime field
                 if (defaultAttr || field.attributes?.some((attr) => attr.name === '@updatedAt')) {
                     insert[name] = new Date();
+                    return;
                 }
-            } else if (defaultAttr?.args?.[0]?.value !== undefined) {
+            }
+
+            const defaultArg = defaultAttr?.args?.[0]?.value;
+            if (defaultArg?.kind === 'literal') {
                 // other default value
-                insert[name] = defaultAttr.args[0].value;
+                insert[name] = defaultArg.value;
             }
         }
     });
@@ -425,7 +429,7 @@ function assignForeignKeyFields(field: FieldDef, resultData: any, mutationData:
         return;
     }
 
-    for (const [idField, fkField] of zip(field.relation.fields, field.relation.references)) {
+    for (const [idField, fkField] of zip(field.relation.references, field.relation.fields)) {
         if (idField in mutationData.connect) {
             resultData[fkField] = mutationData.connect[idField];
         }

packages/clients/tanstack-query/src/utils/nested-write-visitor.ts

@@ -169,7 +169,7 @@ export class NestedWriteVisitor {
 
             case 'createMany':
             case 'createManyAndReturn':
-                if (data) {
+                {
                     const newContext = pushNewContext(field, model, {});
                     let callbackResult: any;
                     if (this.callback.createMany) {

packages/clients/tanstack-query/src/utils/query-analysis.ts

@@ -89,12 +89,19 @@ function collectDeleteCascades(model: string, schema: SchemaDef, result: Set<str
         return;
     }
 
-    Object.values(modelDef.fields).forEach((fieldDef) => {
-        if (fieldDef.relation && fieldDef.relation.onDelete === 'Cascade') {
-            result.add(fieldDef.type);
-            collectDeleteCascades(fieldDef.type, schema, result, visited);
+    for (const [modelName, modelDef] of Object.entries(schema.models)) {
+        if (!modelDef) {
+            continue;
         }
-    });
+        for (const fieldDef of Object.values(modelDef.fields)) {
+            if (fieldDef.relation?.onDelete === 'Cascade' && fieldDef.type === model) {
+                if (!result.has(modelName)) {
+                    result.add(modelName);
+                }
+                collectDeleteCascades(modelName, schema, result, visited);
+            }
+        }
+    }
 }
 
 function getBaseRecursively(model: string, schema: SchemaDef, result: Set<string>) {