Fadab MySQL Helper

A lightweight Promise-based wrapper and helper for felixge's node-Mysql.

Features:

• Very slim library, only 2 dependancies (app-root-path and felixge's node-mysql).
• Convenience functions for record selecting, inserting, updating and insert (on duplicate) updating.
• Connection pooling.
• Everything based on Promises.

Install

npm i fadab-mysql-helper --save

yarn add fadab-mysql-helper

Usage

Fadab Config File

The fadab.config file should be created in the project root directory. Format you connection options based on felixge's options.

Javascript File Example

module.exports = {
  mysql: {
    host: 'host',
    user: 'user',
    password: 'password',
    database: 'database_name'
  }
};

Typescript File Example

export default {
  mysql: {
    host: 'host',
    user: 'user',
    password: 'password',
    database: 'database_name'
  }
};

Defining Library

Javascript Example

const FadabMysql = require('fadab-mysql-helper');

Typescript Example

import * as FadabMysql from 'fadab-mysql-helper';

Selecting a record

FadabMysql.selectAsync('tableName')
  .then(function (record) {
    console.log(record);
  })
  .catch(function (err) {
    console.log('Error fetching record, mysql error:', err.message);
  });

// or

const record = await FadabMysql.selectAsync('tableName');
console.log(record);

Options can be added for the select operation.

• where: A condition is created with the data sent as object.
• distinct: The data taken with this parameter receiving the Boolean value is unique.(Default:false)
• fields: The names of the columns whose data are required in the table are sent in array format and listed.
• orderBy: Specifies by which columns the listed data should be sorted and how;
  • fields: The names of the table columns that need to be sorted are sent as an array.
  • ranking: ASC or DESC property is specified and sorting is performed.
• limit: The amount of data to be listed is specified.
• offset: Specifies from which index to start the data to be listed.
• isRandom: Lists random data.

const where = {
  FirstName: 'ismet'
};

// Creates a where query with the data sent in the where object.
// List the users whose name is ismet with this operation.
const records = await FadabMysql.selectAsync('tableName', { where });
console.log(records);

const orderBy = {
  field: 'FirstName',
  ranking: 'ASC'
};

// Sort by First Name column.
const records = await FadabMysql.selectAsync('tableName', { orderBy });
console.log(records);

const fields = ['FirstName', 'LastName'];

// It lists data from the table according to the desired columns.
const records = await FadabMysql.selectAsync('tableName', { fields });
console.log(records);

const records = await FadabMysql.selectAsync('tableName', {
  limit: 2,
  offset: 1
});
console.log(records);

Advanced Query Examples

const orderBy = {
    field: "FirstName",
    ranking: "ASC"
};

const where = [
  {
    key: 'FirstName',
    value: 'ismet',
    conditionType: 'eq'
  },
  {
    key: 'LastName',
    value: 'kizgin',
    conditionType: 'eq'
  },
  {
    key: 'Age',
    value: 18,
    conditionType: 'gte'
  }
];

const records = await FadabMysql.selectAsync('tableName', { orderBy, where, limit: 2, offset: 1 });
console.log(records);

const orderBy = [
  {
    field: "FirstName"
    ranking: "ASC"
  },
  {
    field: "LastName",
    ranking: "ASC"
  }
];

const where = {
  _and: {
    FirstName: 'ismet',
    LastName: 'kizgin'
  },
  _or: [
    {
      key: 'Age',
      value: 18,
      conditionType: 'gte'
    },
    {
      key: 'Age',
      value: 10,
      conditionType: 'lte'
    }
  ]
};

const records = await FadabMysql.selectAsync('tableName', { orderBy, where, limit: 2, offset: 1 });
console.log(records);

Count

const total = await FadabMysql.countAsync('tableName');
console.log(total);

const where = {
  _and: {
    FirstName: 'ismet',
    LastName: 'kizgin'
  },
  _or: [
    {
      key: 'Age',
      value: 18,
      conditionType: 'gte'
    },
    {
      key: 'Age',
      value: 10,
      conditionType: 'lte'
    }
  ]
};

const total = await FadabMysql.countAsync('tableName', { where });
console.log(total);

Find One

// Returns a single record as object.
const records = await FadabMysql.findOneAsync('tableName', { id: 1 });
console.log(records);

Advanced Example

const orderBy = [
  {
    field: "FirstName"
    ranking: "ASC"
  },
  {
    field: "LastName",
    ranking: "ASC"
  }
];

const where = {
    FirstName: "ismet"
};

const fields = ["FirstName", "LastName"];

const records = await FadabMysql.selectAsync('tableName', { orderBy, where, fields, limit: 2, offset: 1 });
console.log(records);

Inserting a record

const insert = {
  EmailAddress: '[email protected]',
  FirstName: 'İsmet',
  LastName: 'Kizgin'
};

FadabMysql.insertAsync('tblUser', insert)
  .then(function (info) {
    console.log('New User Entered!', info);
  })
  .catch(function (err) {
    console.log('Error creating new user, mysql error:', err.message);
  });

// or

const info = await FadabMysql.insertAsync('tblUser', insert);
console.log(info);

//info is an object with affectedRows and insertId

There is also a boolean 3rd argument, true if you want "INSERT IGNORE"

Multi insert records

const insert = [
  {
    EmailAddress: '[email protected]',
    FirstName: 'İsmet',
    LastName: 'Kizgin'
  },
  {
    EmailAddress: '[email protected]',
    FirstName: 'İsmet',
    LastName: 'Kizgin'
  }
];

FadabMysql.bulkInsertAsync('tblUser', insert)
  .then(function (info) {
    console.log('New User Entered!', info);
  })
  .catch(function (err) {
    console.log('Error creating new user, mysql error:', err.message);
  });

// or

const info = await FadabMysql.bulkInsertAsync('tblUser', insert);
console.log(info);

//info is an object with affectedRows and insertId

There is also a boolean 3rd argument, true if you want "INSERT IGNORE"

Updating a record

var where = {
  Id: 1
};

var update = {
  EmailAddress: '[email protected]',
  FirstName: 'İsmet',
  LastName: 'Kizgin'
};

FadabMysql.updateAsync('tblUser', update, where)
  .then(function (info) {
    console.log('User Updated!', info);
  })
  .catch(function (err) {
    console.log('Error updating record, mysql error:', err.message);
  });

// or

const info = await FadabMysql.updateAsync('tblUser', update, where);
console.log(info);

//info is an object with affectedRows, changedRows

Upsert a record

var user = {
  EmailAddress: '[email protected]',
  FirstName: 'İsmet',
  LastName: 'Kizgin'
};

FadabMysql.upsertAsync('tblUser', user)
  .then(function (info) {
    console.log('User Updated!', info);
  })
  .catch(function (err) {
    console.log('Error updating record, mysql error:', err.message);
  });

// or

const info = await FadabMysql.upsertAsync('tblUser', update);
console.log(info);

//info is an object with affectedRows, changedRows

Deleting a record

FadabMysql.deleteAsync('tblUser', { id: 1 })
  .then(function (record) {
    console.log(record);
  })
  .catch(function (err) {
    console.log('Error deleting record, mysql error:', err.message);
  });

// or

const where = {
  id: 1
};

const record = await FadabMysql.deleteAsync('tblUser', where);
console.log(record);

Custom Queries

Don't forget to release the pooled connection so another process can use it.

//query has sql structure
//values will be placed in the query when escaped, and are optional
FadabMysql.query(query, values)
  .then(function (results) {
    console.log('my query results', results);
  })
  .catch(function (err) {
    reject(err);
  });

// or

const results = await FadabMysql.queryAsync(query, values);
console.log(results);

The query values are used in the same way felixge's module expects it. They are also optional.

Utilities

// Formatting sql query
var query = FadabMysql.format(query, values);

//Escape a database,table or column name
var value = FadabMysql.escapeId(values);

//Escape a string
var noSqlInject = FadabMysql.escapeId(value);

Helper Class

Class content

import { SelectOptions, Where, DynamicObject, WhereAdvancedObject, CountOptions } from '../models';
export declare class FadabHelper {
    protected baseTable: string;
    constructor();
    queryAsync: (query: string, values?: object | object[] | undefined) => Promise<unknown>;
    selectAsync(options: SelectOptions): Promise<unknown>;
    findOneAsync(where: Where | DynamicObject): Promise<object>;
    insertAsync(values: DynamicObject, ignore?: boolean): Promise<unknown>;
    updateAsync(values: DynamicObject, where: Where | DynamicObject | Array<WhereAdvancedObject>): Promise<unknown>;
    deleteAsync(where: Where | DynamicObject): Promise<unknown>;
    countAsync(options?: CountOptions): Promise<number>;
    bulkInsertAsync(values: Array<DynamicObject>, ignore?: boolean): Promise<unknown>;
    upsertAsync(values: DynamicObject): Promise<unknown>;
}

Usage

const { FadabHelper } = require('fadab-mysql-helper');
// or
// import { FadabHelper } from 'fadab-mysql-helper';

class MysqlTransaction extends FadabHelper {
  constructor() {
    super();
    this.baseTable = 'tableName';
  }
}

Coming Soon

• fadab-mssql-helper
• fadab-postgresql-helper

Support fadab-mysql-helper

fadab-mysql-helper is completely free and open-source. If you find it useful, you can show your support by 🌟 it or sharing it in your social network.

License

GNU General Public