From 35e0a7e24f5e42fd81b1066c2e9ea1a210510eed Mon Sep 17 00:00:00 2001
From: Martin Schmollinger <martin.schmollinger@reutlingen-university.de>
Date: Thu, 8 May 2025 15:40:56 +0200
Subject: [PATCH] Added callback function to calculate field amountDonatedSoFar
---
src/myaktion/model/campaign.go | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/myaktion/model/campaign.go b/src/myaktion/model/campaign.go
index 47c8cd4..b861643 100644
--- a/src/myaktion/model/campaign.go
+++ b/src/myaktion/model/campaign.go
@@ -12,3 +12,13 @@ type Campaign struct {
Donations []Donation `gorm:"foreignKey:CampaignID;constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
Account Account `gorm:"embedded;embeddedPrefix:account_"`
}
+
+func (c *Campaign) AfterFind(tx *gorm.DB) (err error) {
+ var sum float64
+ result := tx.Model(&Donation{}).Select("ifnull(sum(amount),0)").Where("campaign_id = ?", c.ID).Scan(&sum)
+ if result.Error != nil {
+ return result.Error
+ }
+ c.AmountDonatedSoFar = sum
+ return nil
+}
--
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