Lumen connecting to multiple databases using DB_ connections in .env - Possible? - lumen

I can see how to have multiple connections using a configuration file in app/config/database.php and this is well documented.
Is this the only way or can you also define multiple connections using the .env file?

First, you'll need to configure your connections. You need to create a config directory in your project and add the file config/database.php. Like this:
<?php
return [
'default' => 'mysql',
'connections' => [
'mysql' => [
'driver' => 'mysql',
'host' => 'localhost',
'database' => 'homestead',
'username' => 'root',
'password' => 'secret',
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'strict' => false,
],
'mysql2' => [
'driver' => 'mysql',
'host' => 'localhost',
'database' => 'homestead2',
'username' => 'root',
'password' => 'secret',
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix' => '',
'strict' => false,
],
],
Once you've added your connection configurations, you can access them by getting the database manager object out of the container and calling ->connection('connection_name'). See below for a full example.
<?php
namespace App\Http\Controllers;
use Illuminate\Database\DatabaseManager;
class StatsController extends Controller
{
/**
* #return array
*/
public function getLatest()
{
// Resolve dependencies out of container
/** #var DatabaseManager $db */
$db = app('db');
$database1 = $db->connection('mysql');
$database2 = $db->connection('mysql2');
// Look up 3 newest users and 3 newest blog posts
$threeNewestUsers = $database1->select("SELECT * FROM users ORDER BY created_at DESC LIMIT 3");
$threeLatestPosts = $database2->select("SELECT * FROM blog_posts ORDER BY created_at DESC LIMIT 3");
return [
"new_users" => $threeNewestUsers,
"new_posts" => $threeLatestPosts,
];
}
}
http://andyfleming.com/configuring-multiple-database-connections-in-lumen-without-facades/

Related

Zend framework 3 Mysqli adapter issue

I am trying to connect mysql to zend framework 3 application but it gives such result as below:
Class 'Zend\Db\Adapter\Adapter\Driver\Mysqli' not found
I am using below code:
$config = [
'driver' => 'Mysqli',
'database' => 'abc',
'host' => 'localhost',
// 'port' => 27017,
'username' => 'root',
'password' => '',
];
$adapter = new Mysqli($config);
$result = $adapter->query("select * from
table1",Adapter::QUERY_MODE_EXECUTE);
foreach($result as $row){
echo $row->sentence;"<br>";
}
inserted this as well. use Zend\Db\Adapter\Adapter\Driver\Mysqli;

TYPO3 v9: how to query additional external database (MSSQL)

I am trying to query an additional external database connection in one of my repositories. In LocalConfiguration.php I've defined two connections (Default, External).
[...]
'DB' => [
'Connections' => [
// Local MySQL database
'Default' => [
// ...
],
// External MSSQL database
'External' => [
'charset' => 'utf-8',
'dbname' => 'DBNAME',
'driver' => 'sqlsrv',
'host' => 'someExternalIP',
'password' => 'somePassword',
'port' => 1433,
'user' => 'someUser',
],
],
],
[...]
In my repository I want to query the external database (via Doctrine).
$queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
->getQueryBuilderForTable('dbo.SomeTable');
$queryBuilder->getRestrictions()->removeAll();
$queryBuilder
->select('*')
->from('dbo.SomeTable');
Do I have to explicitly tell the QueryBuilder to use that particular connection? Right now I am getting an Doctrine\DBAL\Exception\ConnectionException error, as the system tries to connect via the Default-Connection.
An exception occurred while executing 'SELECT * FROM `dbo`.`SomeTable`':
SELECT command denied to user 'myLocalUser'#'localhost' for table 'SomeTable'
Check out $GLOBALS['TYPO3_CONF_VARS']['DB']['TableMapping'] where you can explicitly define what tables are located in which database. See also this for some more details https://docs.typo3.org/typo3cms/CoreApiReference/ApiOverview/Database/Configuration/Index.html
The other option is actually to use ask the Connection by name, and create a query builder out of that.
GeneralUtility::makeInstance(ConnectionPool::class)->getConnectionByName('External')->createQueryBuilder(...)
I personally would go with the latter, as it is more explicit within the actual callers code what is used.
To work with external DB, you have to :
configure the mapping with external database and table mapping in LocalConfiguration.php
define the TCA for external tables in myExt/Configuration/TCA/MyExternalTableName.php
configure the external tables/columns mapping in ext_typoscript_setup.txt
and then, the queries in repositories will work.
Sample LocalConfiguration.php :
'DB' => [
'Connections' => [
'Default' => [
'charset' => 'utf8',
'dbname' => 'LOCAL-DB',
'driver' => 'mysqli',
'host' => '127.0.0.1',
'password' => 'PWD',
'port' => 3306,
'user' => 'USER',
],
'externalDb' => [
'charset' => 'utf8',
'dbname' => 'EXTERNAL-DB',
'driver' => 'mysqli',
'host' => 'localhost',
'password' => 'PWD',
'port' => 3306,
'user' => 'USER',
],
],
'TableMapping' => [
'MyexternalTable1' => 'externalDb',
'MyexternalTable2' => 'externalDb',
...
]
]
Sample columns mapping in myExt/ext_typoscript_setup.txt :
plugin.tx_myext {
persistence {
classes {
Vendor\MyExt\Domain\Model\LocalModel {
mapping {
tableName = ExternalTableName
recordType = \Vendor\MyExt\Domain\Model\LocalModel
columns {
col1.mapOnProperty = uid
col2.mapOnProperty = name
...
}
}
}
}
}
}

DB::connection() Laravel 5 not working

I'am using Laravel 5.0 and I make 2 database which is one for system and two for data. when I try to change connection to get data from my second database it tell error
SQLSTATE[42P01]: Undefined table: 7 ERROR: relation "barang" does not
exist LINE 1: select * from barang
Here my Controller
<?php namespace App\Http\Controllers;
use App\Http\Requests;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use DB;
class MultiController extends Controller {
/**
* Display a listing of the resource.
*
* #return Response
*/
public function index()
{
$data = DB::connection('pgsql2')->select('select * from barang');
return view('laporan.db')->withData($data);
}
Database.php
<?php
return [
'fetch' => PDO::FETCH_CLASS,
'default' => 'pgsql',
'connections' => [
'pgsql' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DATABASE', 'larasimak'),
'username' => env('DB_USERNAME', 'postgres'),
'password' => env('DB_PASSWORD', 'postgres'),
'charset' => 'utf8',
'prefix' => '',
'schema' => 'public',
],
'pgsql2' => [
'driver' => 'pgsql',
'host' => env('DB_HOST', 'localhost'),
'database' => env('DB_DATABASE', 'simkie_data'),
'username' => env('DB_USERNAME', 'postgres'),
'password' => env('DB_PASSWORD', 'postgres'),
'charset' => 'utf8',
'prefix' => '',
'schema' => 'public',
],
my DotEnv
APP_ENV=local
APP_DEBUG=true
APP_KEY=nlXoLNFcWAD9rtTGXCUSpDdbQxms1ADi
DB_HOST=localhost
DB_DATABASE=larasimak
DB_USERNAME=postgres
DB_PASSWORD=postgres
CACHE_DRIVER=file
SESSION_DRIVER=file
QUEUE_DRIVER=sync
MAIL_DRIVER=smtp
MAIL_HOST=mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
You should set the credential of second database. Current both database are using same credential. Try following for second database:
database.php
'pgsql2' => [
'driver' => 'pgsql',
'host' => env('PS2_DB_HOST', 'localhost'),
'database' => env('PS2_DB_DATABASE', 'simkie_data'),
'username' => env('PS2_DB_USERNAME', 'postgres'),
'password' => env('PS2_DB_PASSWORD', 'postgres'),
'charset' => 'utf8',
'prefix' => '',
'schema' => 'public',
]
.evn
PS2_DB_HOST=localhost
PS2_DB_DATABASE=simkie_data
PS2_DB_USERNAME=postgres
PS2_DB_PASSWORD=postgres

Connect With PostgreSQL in Phalcon Framework

Phalcon is not able to connect to postgrsql. Here are my settings in config.php
return new \Phalcon\Config(array(
'database' => array(
'adapter' => 'Postgresql',
'host' => 'localhost',
'username' => 'postgres',
'password' => 'root',
'dbname' => 'mydb',
'charset' => 'utf8',
),
'application' => array(
'controllersDir' => __DIR__ . '/../../app/controllers/',
'modelsDir' => __DIR__ . '/../../app/models/',
'viewsDir' => __DIR__ . '/../../app/views/',
'pluginsDir' => __DIR__ . '/../../app/plugins/',
'libraryDir' => __DIR__ . '/../../app/library/',
'cacheDir' => __DIR__ . '/../../app/cache/',
'baseUri' => '/test/',
)
));
Page is blank showing no errors.
DI service implementation
use Phalcon\Db\Adapter\Pdo\Postgresql as DbAdapter;
$di->set('db', function () use ($config) {
return new DbAdapter(array(
'host' => $config->database->host,
'username' => $config->database->username,
'password' => $config->database->password,
'dbname' => $config->database->dbname,
"charset" => $config->database->charset
));
});
There is no port in db connection array you used. Default postgresql port is 5432. so use this in your db connection and try to pass array directly to postgresql adapter constructor.
or
install postgres pdo /php pdo again.
I think that code is fine.
I was working a project where i had to use MySQL and PostGres.I connected my Postgresdb by following-
Below default 'db' connection string i wrote the following code inside services.php-
$di->setShared('pgphalcon', function () {
$config = $this->getConfig();
$adaptar = "PostgreSQL";
$class = 'Phalcon\Db\Adapter\Pdo\\' . $adaptar;
$params = [
'host' => "localhost",
'port' => "5432", // for localhost no need to put this line unless u change the port
'username' => "postgres",
'password' => "12345",
'dbname' => "phalcon",
];
$connection = new $class($params);
return $connection;
});
Then your controller function
do the following-
public function yourcontrollernameAction()
{
$con = $this->di->get('pghalcon');
$post = $con->fetchOne("SELECT * FROM blog ORDER BY id DESC LIMIT 1", Phalcon\Db::FETCH_ASSOC);
$this->view->data= $post;
}
For better Understanding I'd like to suggest visit this url
One thing to clarify- I was failed to do db operation by Model for PostGreSQL. That's why I used this way.

Problem connecting to postgres with Kohana 3 database module on OS X Snow Leopard

Edits/Additions at bottom...
Environment:
Mac OS X 10.6 Snow Leopard
PHP 5.3
Kohana 3.0.4
When I try to configure and use a connection to a postgresql database on localhost I get the following error:
ErrorException [ Warning ]: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///var/mysql/mysql.sock)
Here is the configuration of the database in /modules/database/config/database.php (note the third instance named 'pgsqltest')
return array
(
'default' => array
(
'type' => 'mysql',
'connection' => array(
/**
* The following options are available for MySQL:
*
* string hostname
* string username
* string password
* boolean persistent
* string database
*
* Ports and sockets may be appended to the hostname.
*/
'hostname' => 'localhost',
'username' => FALSE,
'password' => FALSE,
'persistent' => FALSE,
'database' => 'kohana',
),
'table_prefix' => '',
'charset' => 'utf8',
'caching' => FALSE,
'profiling' => TRUE,
),
'alternate' => array(
'type' => 'pdo',
'connection' => array(
/**
* The following options are available for PDO:
*
* string dsn
* string username
* string password
* boolean persistent
* string identifier
*/
'dsn' => 'mysql:host=localhost;dbname=kohana',
'username' => 'root',
'password' => 'r00tdb',
'persistent' => FALSE,
),
'table_prefix' => '',
'charset' => 'utf8',
'caching' => FALSE,
'profiling' => TRUE,
),
'pgsqltest' => array(
'type' => 'pdo',
'connection' => array(
/**
* The following options are available for PDO:
*
* string dsn
* string username
* string password
* boolean persistent
* string identifier
*/
'dsn' => 'mysql:host=localhost;dbname=pgsqltest',
'username' => 'postgres',
'password' => 'dev1234',
'persistent' => FALSE,
),
'table_prefix' => '',
'charset' => 'utf8',
'caching' => FALSE,
'profiling' => TRUE,
),
);
And here is the code to create the database instance, create a query and execute the query:
$pgsqltest_db = Database::instance('pgsqltest');
$query = DB::query(Database::SELECT, 'SELECT * FROM test')->execute();
I'm continuing to research a solution for this error but thought I'd ask to see if someone else has already found a solution. Any ideas are welcome.
One other note is that I know my build of PHP can access this postgresql db since I'm able to manage the db using phpPgAdmin. But I have yet to determine what phpPgAdmin is doing differently to connect to the db than what Kohana 3 is attempting.
Bart
///////////// EDIT ONE /////////////
Based on Matt's comment I changed the following in the configuration of the 'pgsqltest' database instance.
from
'dsn' => 'mysql:host=localhost;dbname=pbeeep',
to
'dsn' => 'pgsql:host=localhost;dbname=pbeeep',
I also changed the execution of the query.
from
$query = DB::query(Database::SELECT, 'SELECT * FROM test')->execute();
to
$query = DB::query(Database::SELECT, 'SELECT * FROM test')->execute($pgsqltest_db);
Now I get the following error
PDOException [ 0 ]: could not find driver
I'm not sure if this is progress or not but it's more info to share.
My first comment is that you have Kohana configured to use mysql 'type' => 'mysql',. Try updating that for now and get back to us.