Laravel get data from another project database - database

Question

I'm moving the old project database to a new project database. the structure of the old project database is a single MYSQL database and the new project is the multi-tenant database which contained a lot of subdomains. Also, the new project already set up a RESTFUL API to receive the data from the old project. Therefore, my idea is to implement the multi-connection in the new project in order to link both databases together then get data from the old project. Example, the new project sales table is an empty and old project sales table already contains some data. Now in my new project interface maybe have a sync button in order to move data from the old database into a new database. Do I need to pass the API key before sending data into a new project? Since it's a multi-tenant structure.
This is my config/database
'mysql' => array(
'driver' => 'mysql',
'host' => 'aurora-2016-cluster.cluster-rtygfdfg.ap-southwest-1.rds.amazonaws.com',
'database' => 'newProject',
'username' => #$_ENV['DB_USER'] ?: '',
'password' => #$_ENV['DB_PASS'] ?: '',
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
),
# Our secondary database connection
'mysql2' => array(
'driver' => 'mysql',
'host' => 'localhost',
'database' => 'oldProject',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
),

Answer 1

Its Quite Simple in laravel open your config/databse.php file
you will find the code like this
<?php
return [
/*
|--------------------------------------------------------------------------
| Default Database Connection Name
|--------------------------------------------------------------------------
|
| Here you may specify which of the database connections below you wish
| to use as your default connection for all database work. Of course
| you may use many connections at once using the Database library.
|
*/
'default' => env('DB_CONNECTION', 'mysql'),
/*
|--------------------------------------------------------------------------
| Database Connections
|--------------------------------------------------------------------------
|
| Here are each of the database connections setup for your application.
| Of course, examples of configuring each database platform that is
| supported by Laravel is shown below to make development simple.
|
|
| All database work in Laravel is done through the PHP PDO facilities
| so make sure you have the driver for your particular database of
| choice installed on your machine before you begin development.
|
*/
'connections' => [
'sqlite' => [
'driver' => 'sqlite',
'database' => env('DB_DATABASE', database_path('database.sqlite')),
'prefix' => '',
'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true),
],
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'unix_socket' => env('DB_SOCKET', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'prefix_indexes' => true,
'strict' => true,
'engine' => null,
],
'pgsql' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '5432'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
'schema' => 'public',
'sslmode' => 'prefer',
],
'sqlsrv' => [
'driver' => 'sqlsrv',
'host' => env('DB_HOST', 'localhost'),
'port' => env('DB_PORT', '1433'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
],
],
/*
|--------------------------------------------------------------------------
| Migration Repository Table
|--------------------------------------------------------------------------
|
| This table keeps track of all the migrations that have already run for
| your application. Using this information, we can determine which of
| the migrations on disk haven't actually been run in the database.
|
*/
'migrations' => 'migrations',
/*
|--------------------------------------------------------------------------
| Redis Databases
|--------------------------------------------------------------------------
|
| Redis is an open source, fast, and advanced key-value store that also
| provides a richer body of commands than a typical key-value system
| such as APC or Memcached. Laravel makes it easy to dig right in.
|
*/
'redis' => [
'client' => 'predis',
'default' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_DB', 0),
],
'cache' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_CACHE_DB', 1),
],
],
];
Steps to be followed
Step1:
Adding new arry to databse connection array
'mysqlSecondConnection' => [
'driver' => 'mysql',
'host' => env('DB_HOST1', '127.0.0.1'),
'port' => env('DB_PORT1', '3306'),
'database' => env('DB_DATABASE2', 'secondDatabseName'),
'username' => env('DB_USERNAME2', 'secondDatabseUserName'),
'password' => env('DB_PASSWORD2', 'secondDatabsePassword'),
'unix_socket' => env('DB_SOCKET2', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => false,
'engine' => null,
],
After this your file may look like
<?php
return [
/*
|--------------------------------------------------------------------------
| Default Database Connection Name
|--------------------------------------------------------------------------
|
| Here you may specify which of the database connections below you wish
| to use as your default connection for all database work. Of course
| you may use many connections at once using the Database library.
|
*/
'default' => env('DB_CONNECTION', 'mysql'),
/*
|--------------------------------------------------------------------------
| Database Connections
|--------------------------------------------------------------------------
|
| Here are each of the database connections setup for your application.
| Of course, examples of configuring each database platform that is
| supported by Laravel is shown below to make development simple.
|
|
| All database work in Laravel is done through the PHP PDO facilities
| so make sure you have the driver for your particular database of
| choice installed on your machine before you begin development.
|
*/
'connections' => [
'sqlite' => [
'driver' => 'sqlite',
'database' => env('DB_DATABASE', database_path('database.sqlite')),
'prefix' => '',
'foreign_key_constraints' => env('DB_FOREIGN_KEYS', true),
],
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'unix_socket' => env('DB_SOCKET', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'prefix_indexes' => true,
'strict' => true,
'engine' => null,
],
'mysqlSecondConnection' => [
'driver' => 'mysql',
'host' => env('DB_HOST1', '127.0.0.1'),
'port' => env('DB_PORT1', '3306'),
'database' => env('DB_DATABASE2', 'secondDatabseName'),
'username' => env('DB_USERNAME2', 'secondDatabseUserName'),
'password' => env('DB_PASSWORD2', 'secondDatabsePassword'),
'unix_socket' => env('DB_SOCKET2', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => false,
'engine' => null,
],
'pgsql' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '5432'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
'schema' => 'public',
'sslmode' => 'prefer',
],
'sqlsrv' => [
'driver' => 'sqlsrv',
'host' => env('DB_HOST', 'localhost'),
'port' => env('DB_PORT', '1433'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'charset' => 'utf8',
'prefix' => '',
'prefix_indexes' => true,
],
],
/*
|--------------------------------------------------------------------------
| Migration Repository Table
|--------------------------------------------------------------------------
|
| This table keeps track of all the migrations that have already run for
| your application. Using this information, we can determine which of
| the migrations on disk haven't actually been run in the database.
|
*/
'migrations' => 'migrations',
/*
|--------------------------------------------------------------------------
| Redis Databases
|--------------------------------------------------------------------------
|
| Redis is an open source, fast, and advanced key-value store that also
| provides a richer body of commands than a typical key-value system
| such as APC or Memcached. Laravel makes it easy to dig right in.
|
*/
'redis' => [
'client' => 'predis',
'default' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_DB', 0),
],
'cache' => [
'host' => env('REDIS_HOST', '127.0.0.1'),
'password' => env('REDIS_PASSWORD', null),
'port' => env('REDIS_PORT', 6379),
'database' => env('REDIS_CACHE_DB', 1),
],
],
];
Step2: Configure Your Database name in mysqlSecondConnection array
IF THIS PROJECT IS TEAM COLLABRATING DONT FORGET TO ADD THE NEW ATTRIBUTES IN .ENV FILE
Step 3:
Now we are finished configuring the databse
Step 4:
Open you Model that need to interacts with the mysqlSecondConnection Database
And add the
Property
protected $connection ='mysqlSecondConnection';
After this the mode may look like For Eg:
I am Considering it as Post.php
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
/**
* Class Cat
*
* #package App
*/
class Post extends Model
{
/**
* The connection name for the model.
*
* #var string
*/
protected $connection ='mysqlSecondConnection';
/**
* The attributes that aren't mass assignable.
*
* #var array
*/
protected $guarded = ['id'];
/**
* The table associated with the model.
*
* #var string
*/
protected $table = 'posts';
/**
* The primary key for the model.
*
* #var string
*/
protected $primaryKey = 'id';
/**
* The "type" of the auto-incrementing ID.
*
* #var string
*/
protected $keyType = 'int';
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = ['name','title','desc'];
/**
* The attributes that should be hidden for arrays.
*
* #var array
*/
protected $hidden = [];
/**
* #var array
*/
protected $dates = ['created_at','updated_at'];
}
Thats its
Now the testing part
Open your web.php file inside route folder
and paste the following code
Route::get('/testSecondConnection', function ()
{
$posts= App\Post::all();
dd($posts);
});
Now navigate to yourApplication/testSecondConnection
now see the connection property in the dumped
EDITED
I actually Forget to add another method that is via DB Facade version
Just pass the connection name to the DB inside the connection method
While using this this does not check for model
for the $connection Property in Post Model
$dbVersion = \DB::connection('mysqlSecondConnection')->table('posts')->get();
dd($dbVersion);
Edited for But which method is more efficient?
Good question Mate
Situation 1:
For Eg:
If You are Using the mysqlSecondConnection for the Post model in all the situation of your project then
add this to Your model
protected $connection ='mysqlSecondConnection';
and this is good and
NOTE $connection Property Will work on Eloquent not in DB Facade
Situation 2:
`Eg:'
if you are using only few Queries and calls to that mysqlSecondConnection
You Dont need to add
protected $connection ='mysqlSecondConnection';
Post Model
DB Facade Version
$dbVersion = \DB::connection('mysqlSecondConnection')->table('posts')->get();
dd($dbVersion);
Eloquent Version
$eloquentVersion = Post::on('mysqlSecondConnection')->get()
dd($eloquentVersion);
YOU MAY GET THE DOUBT WHY DB FACADE IS NOT USING mysqlSecondConnection IN POST MODEL
Solution:
While using the DB FACADE
It Will look into the config/datbase.php
for default array
Which is used in connection to database
'default' => env('DB_CONNECTION', 'mysql'),
Hope its helps and look clear