部分对象更新

“纵有疾风来，人生不言弃”，这句话送给正在学习Golang的朋友们，也希望在阅读本文《部分对象更新》后，能够真的帮助到大家。我也会在后续的文章中，陆续更新Golang相关的技术文章，有好的建议欢迎大家在评论留言，非常感谢！

我希望有以下格式的地图：

mapname[someintegerid].title.en_us

mapname[someintegerid].title.zh_hk

mapname[someintegerid].title.zh_cn

mapname[someintegerid].content.en_us

mapname[someintegerid].content.zh_hk

mapname[someintegerid].content.zh_cn

其实上面说的有道理吗？无论如何，我尝试了下面的代码。 api json响应格式是完美的，但是，我注意到在for循环期间，zh_hk将覆盖en_us，并且zh_cn将覆盖zh_hk和en_us，导致正确的zh_cn值但空en_us和zh_hk值。

专家能给我一些如何实现它的建议吗？

type Hello struct {
    Title   Locale `json:"title"`
    Content Locale `json:"content"`
}

type Locale struct {
    EN_US string `json:"en-US"`
    ZH_HK string `json:"zh-HK"`
    ZH_CN string `json:"zh-CN"`
}


someMap := map[int]Hello{}
for _, recordTranslations := range recordsTranslations {
    if _, has := someMap[recordTranslations.SchoolGroupID]; !has {
        someMap[recordTranslations.SchoolGroupID] = Hello{}
    }

    if recordTranslations.Locale == "en-US" {
        someMap[recordTranslations.SchoolGroupID] = Hello{
            Title: Locale{
                EN_US: recordTranslations.Title,
            },
            Content: Locale{
                EN_US: recordTranslations.Content,
            },
        }
    } else if recordTranslations.Locale == "zh-HK" {
        someMap[recordTranslations.SchoolGroupID] = Hello{
            Title: Locale{
                ZH_HK: recordTranslations.Title,
            },
            Content: Locale{
                ZH_HK: recordTranslations.Content,
            },
        }

    } else if recordTranslations.Locale == "zh-CN" {
        someMap[recordTranslations.SchoolGroupID] = Hello{
            Title: Locale{
                ZH_CN: recordTranslations.Title,
            },
            Content: Locale{
                ZH_CN: recordTranslations.Content,
            },
        }
    }
}

解决方案

hello 对象被覆盖，因为如果您不想覆盖，只需更新对象，每次都会创建一个新的 hello 对象。

type Hello struct {
Title   Locale `json:"title"`
Content Locale `json:"content"
}
type Locale struct {
EN_US string `json:"en-US"`
ZH_HK string `json:"zh-HK"`
ZH_CN string `json:"zh-CN"`
}
someMap := map[int]Hello{}
for _, recordTranslations := range recordsTranslations {
    if _, has := someMap[recordTranslations.SchoolGroupID]; !has {
        someMap[recordTranslations.SchoolGroupID] = Hello{}
}

if recordTranslations.Locale == "en-US" {
    someMap[recordTranslations.SchoolGroupID].Title.EN_US = recordTranslations.Title
        someMap[recordTranslations.SchoolGroupID].Content.EN_US = recordTranslations.Content
       
} else if recordTranslations.Locale == "zh-HK" {
    someMap[recordTranslations.SchoolGroupID].Title.ZH_HK = recordTranslations.Title
        someMap[recordTranslations.SchoolGroupID].Content.ZH_HK = recordTranslations.Content

} else if recordTranslations.Locale == "zh-CN" {
          someMap[recordTranslations.SchoolGroupID].Title.ZH_CN = recordTranslations.Title
        someMap[recordTranslations.SchoolGroupID].Content.ZH_CN = recordTranslations.Content
}
}

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