package model type Operation struct { BaseModel Title string `json:"title"` Amount float64 `json:"amount"` Note string `json:"note,omitempty"` Icon string `json:"icon"` Type string `json:"type"` Date string `json:"date"` UserID string CategoryID string SubcategoryID string Category Category `gorm:"foreignKey:CategoryID"` Subcategory Subcategory `gorm:"foreignKey:SubcategoryID"` }