Fix issue for null id of AI index bulkCreate (#6475)

* fix issue for null id of AI index bulkCreate

fix issue for null id of AI index bulkCreate

* remove f

* add semicolon

* add guard

* add guard

* fix issue that isNewRecord affects map fields back to attributes

fix issue that isNewRecord affects map fields back to attributes

* fix [] pair

* add back set

* exchange set and directly set

* revert to not change set

* add space before <

* change isNewRecords location

* change instances[i]

* retest

* retest

* add test for "should return autoIncrement primary key"

* add test for "should return autoIncrement primary key"

* recover model.test

* format code

* fix sqlite AI primary key issue

* retest

lib/dialects/mysql/query.js

@@ -92,7 +92,22 @@ class Query extends AbstractQuery {
       this.handleInsertQuery(data);
 
       if (!this.instance) {
-        result = data[this.getInsertIdField()];
+        // handle bulkCreate AI primiary key 
+        if (
+          data.constructor.name === 'ResultSetHeader'
+          && this.model
+          && this.model.autoIncrementField
+          && this.model.autoIncrementField === this.model.primaryKeyAttribute
+          && this.model.rawAttributes[this.model.primaryKeyAttribute]
+        ) {
+          const startId = data[this.getInsertIdField()];
+          result = [];
+          for (let i = startId; i < startId + data.affectedRows; i++) {
+            result.push({ [this.model.rawAttributes[this.model.primaryKeyAttribute].field]: i });
+          }
+        } else {
+          result = data[this.getInsertIdField()];
+        }
       }
     }
 

lib/dialects/sqlite/query.js

@@ -127,7 +127,22 @@ class Query extends AbstractQuery {
                     query.handleInsertQuery(results, metaData);
 
                     if (!query.instance) {
-                      result = metaData[query.getInsertIdField()];
+                      // handle bulkCreate AI primiary key
+                      if (
+                        metaData.constructor.name === 'Statement'
+                        && query.model
+                        && query.model.autoIncrementField
+                        && query.model.autoIncrementField === query.model.primaryKeyAttribute
+                        && query.model.rawAttributes[query.model.primaryKeyAttribute]
+                      ) {
+                        const startId = metaData[query.getInsertIdField()] - metaData.changes + 1;
+                        result = [];
+                        for (let i = startId; i< startId + metaData.changes; i++) {
+                          result.push({ [query.model.rawAttributes[query.model.primaryKeyAttribute].field]: i });
+                        }
+                      } else {
+                        result = metaData[query.getInsertIdField()];
+                      }
                     }
                   }
 

lib/model.js

@@ -2267,7 +2267,6 @@ class Model {
           if (Array.isArray(results)) {
             results.forEach((result, i) => {
               instances[i].set(this.primaryKeyAttribute, result[this.rawAttributes[this.primaryKeyAttribute].field], {raw: true});
-              instances[i].isNewRecord = false;
             });
           }
           return results;
@@ -2286,6 +2285,7 @@ class Model {
             delete instance.dataValues[this.rawAttributes[attr].field];
           }
         }
+        instance.isNewRecord = false;
       });
 
       // Run after hook