nodejs mysql查询数据以循环数组

Posted 2023-02-24

【中文标题】nodejs mysql查询数据以循环数组

【英文标题】：nodejs mysql query data to loop array

【发布时间】：2021-06-08 07:35:17

【问题描述】：

我正在使用nodejs 和mysql 从数据库中检索数据。

我需要得到如下结果：

var dictionary, set_lang;
                
dictionary = 
    "english": 
        "_availablestorage": "Available Storage",
        "_prayschedule": "Pray Schedule",
        "_mainmenu": "Main Menu",
        "_temperature": "Temperature",
        "_calibration": "Calibration",
        "_mosque": "Mosque"
    ,
    "indonesia": 
        "_availablestorage": "Penyimpanan Tersedia",
        "_prayschedule": "Jadwal Sholat",
        "_mainmenu": "Menu Utama",
        "_temperature": "Suhu",
        "_calibration": "Kalibrasi",
        "_mosque": "Masjid"
    
;

这是我在 js 文件上的代码：

con.query('SELECT * FROM tbl_language;', (err, results)=>

    //Here I do not know how to do.
    //res.json(results);
);

这里是sql fiddle。

【参考方案1】：

const dictionaryData = [
       id: 0, language: 'English' ,
       id: 1, language: 'Indonesian' 
    ]
const languageData = [
      
        language_id: 0,
        key_language: '_availablestorage',
        description: 'Available Storage'
      ,
      
        language_id: 0,
        key_language: '_prayschedule',
        description: 'Pray Schedule'
      ,
      
        language_id: 0,
        key_language: '_mainmenu',
        description: 'Main Menu'
      ,
      
        language_id: 1,
        key_language: '_availablestorage',
        description: 'Tersedia'
      ,
      
        language_id: 1,
        key_language: '_prayschedule',
        description: 'Jadwal'
      ,
      
        language_id: 1,
        key_language: '_mainmenu',
        description: 'Menu Utama'
      
    ]

查询的响应是这样的，那么下面的代码就可以了。

const dictionary = 
dictionaryData.forEach((data) => 
    const setLang = 
    languageData.forEach((language) => 
       if (data.id === language.language_id) 
         setLang[language.key_language] = language.description
       
    )
    dictionary[data.language] = setLang
)
console.log(dictionary)

回复是：

  English: 
    _availablestorage: "Available Storage",
    _mainmenu: "Main Menu",
    _prayschedule: "Pray Schedule"
  ,
  Indonesian: 
    _availablestorage: "Tersedia",
    _mainmenu: "Menu Utama",
    _prayschedule: "Jadwal"
  

现在用您的查询循环更改 foreach 循环。它会起作用。 附上fiddle link