tx.Model(&models.Cart{}).Preload("Items").Find(&lists)
select * from cart_items where cart_id in (xxxx)
tx.Model(&models.Cart{}).
Preload("Items", func(q *gorm.DB) *gorm.DB {
query := q.Select("CartId", "Count", "ItemCode", "StoreItemId", "Remarks").
Preload("StoreItem")
if len(r.ItemIds) > 0 {
query.Where("item_id in ?", r.ItemIds)
}
query.Where("status", enums.CommonStatus.Enabled)
return query
}).
Find(&lists)
select xxxx from cart_items where item_id in (xxxxx) and status = 'xxxx' and cart_id in (xxxx)
the relation fields is cart_id, which condition will before in relations key? and which condition will after in relations key?
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