added support for database table prefixes.

application/config/database.php

@@ -38,6 +38,7 @@ return array(
 		'sqlite' => array(
 			'driver'   => 'sqlite',
 			'database' => 'application',
+			'prefix'   => '',
 		),
 
 		'mysql' => array(
@@ -47,6 +48,7 @@ return array(
 			'username' => 'root',
 			'password' => '',
 			'charset'  => 'utf8',
+			'prefix'   => '',
 		),
 
 		'pgsql' => array(
@@ -56,6 +58,7 @@ return array(
 			'username' => 'root',
 			'password' => '',
 			'charset'  => 'utf8',
+			'prefix'   => '',
 		),
 
 		'sqlsrv' => array(
@@ -64,6 +67,7 @@ return array(
 			'database' => 'database',
 			'username' => 'root',
 			'password' => '',
+			'prefix'   => '',
 		),
 
 	),

laravel/database/connection.php

@@ -14,7 +14,7 @@ class Connection {
 	 *
 	 * @var array
 	 */
-	protected $config;
+	public $config;
 
 	/**
 	 * The query grammar instance for the connection.
@@ -74,13 +74,13 @@ class Connection {
 		switch (isset($this->config['grammar']) ? $this->config['grammar'] : $this->driver())
 		{
 			case 'mysql':
-				return $this->grammar = new Query\Grammars\MySQL;
+				return $this->grammar = new Query\Grammars\MySQL($this);
 
 			case 'sqlsrv':
-				return $this->grammar = new Query\Grammars\SQLServer;
+				return $this->grammar = new Query\Grammars\SQLServer($this);
 
 			default:
-				return $this->grammar = new Query\Grammars\Grammar;
+				return $this->grammar = new Query\Grammars\Grammar($this);
 		}
 	}
 

laravel/database/grammar.php

@@ -9,6 +9,45 @@ abstract class Grammar {
 	 */
 	protected $wrapper = '"%s"';
 
+	/**
+	 * The database connection instance for the grammar.
+	 *
+	 * @var Connection
+	 */
+	protected $connection;
+
+	/**
+	 * Create a new database grammar instance.
+	 *
+	 * @param  Connection  $connection
+	 * @return void
+	 */
+	public function __construct(Connection $connection)
+	{
+		$this->connection = $connection;
+	}
+
+	/**
+	 * Wrap a table in keyword identifiers.
+	 *
+	 * @param  string  $table
+	 * @return string
+	 */
+	public function wrap_table($table)
+	{
+		$prefix = '';
+
+		// Tables may be prefixed with a string. This allows developers to
+		// prefix tables by application on the same database which may be
+		// required in some brown-field situations.
+		if (isset($this->connection->config['prefix']))
+		{
+			$prefix = $this->connection->config['prefix'];
+		}
+
+		return $this->wrap($prefix.$table);
+	}
+
 	/**
 	 * Wrap a value in keyword identifiers.
 	 *

laravel/database/query/grammars/grammar.php

@@ -101,7 +101,7 @@ class Grammar extends \Laravel\Database\Grammar {
 	 */
 	protected function from(Query $query)
 	{
-		return 'FROM '.$this->wrap($query->from);
+		return 'FROM '.$this->wrap_table($query->from);
 	}
 
 	/**
@@ -121,7 +121,7 @@ class Grammar extends \Laravel\Database\Grammar {
 		// set of joins in valid SQL that can appended to the query.
 		foreach ($query->joins as $join)
 		{
-			$table = $this->wrap($join['table']);
+			$table = $this->wrap_table($join['table']);
 
 			$column1 = $this->wrap($join['column1']);
 
@@ -141,6 +141,8 @@ class Grammar extends \Laravel\Database\Grammar {
 	 */
 	final protected function wheres(Query $query)
 	{
+		if (is_null($query->wheres)) return '';
+
 		// Each WHERE clause array has a "type" that is assigned by the query
 		// builder, and each type has its own compiler function. We will call
 		// the appropriate compiler for each where clause in the query.
@@ -311,7 +313,7 @@ class Grammar extends \Laravel\Database\Grammar {
 	 */
 	public function insert(Query $query, $values)
 	{
-		$table = $this->wrap($query->from);
+		$table = $this->wrap_table($query->from);
 
 		// Force every insert to be treated like a batch insert. This simply makes
 		// creating the SQL syntax a little easier on us since we can always treat
@@ -342,7 +344,7 @@ class Grammar extends \Laravel\Database\Grammar {
 	 */
 	public function update(Query $query, $values)
 	{
-		$table = $this->wrap($query->from);
+		$table = $this->wrap_table($query->from);
 
 		// Each column in the UPDATE statement needs to be wrapped in keyword
 		// identifiers, and a place-holder needs to be created for each value
@@ -370,7 +372,7 @@ class Grammar extends \Laravel\Database\Grammar {
 	 */
 	public function delete(Query $query)
 	{
-		$table = $this->wrap($query->from);
+		$table = $this->wrap_table($query->from);
 
 		// Like the UPDATE statement, the DELETE statement is constrained
 		// by WHERE clauses, so we'll need to run the "wheres" method to

laravel/database/schema.php

@@ -33,7 +33,7 @@ class Schema {
 		{
 			$connection = DB::connection($table->connection);
 
-			$grammar = static::grammar($connection->driver());
+			$grammar = static::grammar($connection);
 
 			// Each grammar has a function that corresponds to the command type
 			// and is responsible for building that's commands SQL. This lets
@@ -43,10 +43,10 @@ class Schema {
 			{
 				$statements = $grammar->$method($table, $command);
 
-				// Once we have the statements, we will cast them to an array even
-				// though not all of the commands return an array. This is just in
-				// case the command needs to run more than one query to do what
-				// it needs to do what is requested by the developer.
+				// Once we have the statements, we will cast them to an array
+				// even though not all of the commands return an array just
+				// in case the command needs to run more than one query to
+				// do what it needs to do.
 				foreach ((array) $statements as $statement)
 				{
 					$connection->statement($statement);
@@ -66,7 +66,7 @@ class Schema {
 		// If the developer has specified columns for the table and the
 		// table is not being created, we will assume they simply want
 		// to add the columns to the table, and will generate an add
-		// command for them, adding the columns to the command.
+		// command on the schema automatically.
 		if (count($table->columns) > 0 and ! $table->creating())
 		{
 			$command = new Fluent(array('type' => 'add'));
@@ -92,24 +92,26 @@ class Schema {
 	/**
 	 * Create the appropriate schema grammar for the driver.
 	 *
-	 * @param  string   $driver
+	 * @param  Connection  $connection
 	 * @return Grammar
 	 */
-	public static function grammar($driver)
+	public static function grammar(Connection $connection)
 	{
+		$driver = $connection->driver();
+
 		switch ($driver)
 		{
 			case 'mysql':
-				return new Schema\Grammars\MySQL;
+				return new Schema\Grammars\MySQL($connection);
 
 			case 'pgsql':
-				return new Schema\Grammars\Postgres;
+				return new Schema\Grammars\Postgres($connection);
 
 			case 'sqlsrv':
-				return new Schema\Grammars\SQLServer;
+				return new Schema\Grammars\SQLServer($connection);
 
 			case 'sqlite':
-				return new Schema\Grammars\SQLite;
+				return new Schema\Grammars\SQLite($connection);
 		}
 
 		throw new \Exception("Schema operations not supported for [$driver].");

laravel/database/schema/grammars/grammar.php

@@ -27,7 +27,11 @@ abstract class Grammar extends \Laravel\Database\Grammar {
 		// This method is primarily for convenience so we can just pass a
 		// column or table instance into the wrap method without sending
 		// in the name each time we need to wrap one of these objects.
-		if ($value instanceof Table or $value instanceof Fluent)
+		if ($value instanceof Table)
+		{
+			return $this->wrap_table($value->name);
+		}
+		elseif ($value instanceof Fluent)
 		{
 			$value = $value->name;
 		}