coredata override set value for relationship

Question

I have a working model in coredata with two entity: - Customer - Invoices

Customer has "invoices" property (1 to many) and Invoices has "customer" property (1 to 1). Everything worked until i override the "setCustomer" method on Invoice class. I write this code

-(void)setCustomer:(Customer *)customer {
    [self willChangeValueForKey:@"Customer"];
    [self setPrimitiveValue:customer forKey:@"Customer"];
    [self didChangeValueForKey:@"Customer"];
    [self recalulatePriceAndDiscounts];
}

where "recalculatePriceAndDiscount" is my own method that i need to call when i select different customer.

When i use this code the inverse relationship (customer->invoices) isn't immediately available, i need to close and reopen my application to see customer's invoices.

There is some other method that i need to call?

thanks

Possible duplicate of [Custom setter methods in Core-Data](https://stackoverflow.com/questions/2971806/custom-setter-methods-in-core-data) — malhal, Mar 16 '18 at 23:24

score 0 · Accepted Answer · edited May 12 '14 at 14:16

0

If the property is called "customer" (with a lower-case "c") then you have to use that as key, e.g.

[self willChangeValueForKey:@"customer"];
// ... etc.

edited May 12 '14 at 14:16

Tim Bodeit

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answered Nov 04 '12 at 16:10

Martin R

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coredata override set value for relationship

1 Answers1