Flutter 将数据插入数据库 sqflite

Question

I need to insert the data one at a time and add it to the end of the string , but what happens is that the way I'm doing is overwriting the data

 for (var i = 0; i< isChecked.length; i++) {
  receipt.ingredientsReceipt = isChecked[i]; //receipt is table name, ingredientsReceipt is column name
  print(isChecked[i]);// isChecked is my list containing [ING 1, ING 2, ING 3]
 }

Output:

I/flutter ( 5360): ING 1
I/flutter ( 5360): ING 2
I/flutter ( 5360): ING 3

This is my SQL :

CREATE TABLE receipt(id INTEGER PRIMARY KEY AUTOINCREMENT, nameReceipt TEXT, descReceipt TEXT, ingredientsReceipt TEXT)

Output SQL :

{id: null, nameReceipt: TEST, descReceipt: TEST, ingredientsReceipt: ING 3}

I need it to be like this:

{id: 1, nameReceipt: TEST, descReceipt: TEST, ingredientsReceipt: ING 1, ING 2, ING 3}

Answer 1

According to my comment, use 3 tables:

RECEIPTS

id	nameReceipt	descReceipt
1	name1	desc1
2	name2	desc2

INGREDIENTS

id	name
1	ingr1
2	ingr2
3	ingr3
4	ingr4

RECEIPT_INGREDIENT

id	receipt_fk	ingredient_fk
1	1	1
2	1	2
3	1	3
4	2	3
5	2	4

So when you want to get a receipt, you'll have to write a query to select data from receipt, join with receipt_ingredient (where receipt.id = receipt_ingredient.receipt_fk), join with ingredient (where receipt_ingredient.ingredeint_fk = ingredient.id).

Ex. get receipt id = 1 =>

id	nameReceipt	descReceipt	receipt_fk	ingredient_fk	name
1	name1	desc1	1	1	ingr1
1	name1	desc1	1	2	ingr2
1	name1	desc1	1	3	ingr3