feat: add handle multi upload file

src/helpers/Multer.ts

@@ -18,8 +18,26 @@ function pickSingleFieldMulter(req: Request, fields: string[]) {
   )
 }
 
+/**
+ *
+ * @param req
+ * @param fields
+ */
+function pickMultiFieldMulter(req: Request, fields: string[]) {
+  return pickBy(
+    fields.reduce<any>((acc, field) => {
+      acc[field] = req.getMultiArrayFile(field)
+      return acc
+    }, {}),
+    (value) => {
+      return value !== undefined
+    }
+  )
+}
+
 const Multers = {
   pickSingleFieldMulter,
+  pickMultiFieldMulter,
 }
 
 export default Multers

src/helpers/withState.ts

@@ -20,10 +20,12 @@ class withState {
     this.req.getCookies = this.getCookies.bind(this)
     this.req.getBody = this.getBody.bind(this)
     this.req.setBody = this.setBody.bind(this)
-    this.req.getSingleArrayFile = this.getSingleArrayFile.bind(this)
     this.req.getTransaction = this.getTransaction.bind(this)
     this.req.rollbackTransactions = this.rollbackTransactions.bind(this)
+    this.req.getSingleArrayFile = this.getSingleArrayFile.bind(this)
     this.req.pickSingleFieldMulter = this.pickSingleFieldMulter.bind(this)
+    this.req.getMultiArrayFile = this.getMultiArrayFile.bind(this)
+    this.req.pickMultiFieldMulter = this.pickMultiFieldMulter.bind(this)
     this.req._transaction = {}
   }
 
@@ -79,6 +81,13 @@ class withState {
     }
   }
 
+  getMultiArrayFile(name: string) {
+    const data = get(this.req.files, name, []) as Express.Multer.File
+    if (data) {
+      return data
+    }
+  }
+
   async getTransaction(id?: any): Promise<Transaction> {
     id = id === undefined ? 1 : id
     const txn = this.req._transaction[id]
@@ -106,6 +115,10 @@ class withState {
   pickSingleFieldMulter(fields: string[]) {
     return Multers.pickSingleFieldMulter(this.req, fields)
   }
+
+  pickMultiFieldMulter(fields: string[]) {
+    return Multers.pickMultiFieldMulter(this.req, fields)
+  }
 }
 
 export default withState