Gorm 插入数据的时候如何将字段值为空，例如string 类型字段的值为"",int 类型字段的值为0这样的数据插入。目前看起来使用struct插入会自动过滤

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Comment From: xiashaohua

发现是这段代码导致的

for _, field := range scope.Fields() {
            if scope.changeableField(field) {
                if field.IsNormal && !field.IsIgnored {
                    if field.IsBlank && field.HasDefaultValue {
                        blankColumnsWithDefaultValue = append(blankColumnsWithDefaultValue, scope.Quote(field.DBName))
                        scope.InstanceSet("gorm:blank_columns_with_default_value", blankColumnsWithDefaultValue)
                    } else if !field.IsPrimaryKey || !field.IsBlank {
                        columns = append(columns, scope.Quote(field.DBName))
                        placeholders = append(placeholders, scope.AddToVars(field.Field.Interface()))
                    }
                } else if field.Relationship != nil && field.Relationship.Kind == "belongs_to" {
                    for _, foreignKey := range field.Relationship.ForeignDBNames {
                        if foreignField, ok := scope.FieldByName(foreignKey); ok && !scope.changeableField(foreignField) {
                            columns = append(columns, scope.Quote(foreignField.DBName))
                            placeholders = append(placeholders, scope.AddToVars(foreignField.Field.Interface()))
                        }
                    }
                }
            }
        }