Added warning about performances

Loïc Chardonnet · Loïc Chardonnet · commit 11bfe506c9c5 · 2014-03-02T17:27:35.000+01:00
diff --git a/components/console/commands_as_services.rst b/components/console/commands_as_services.rst
@@ -61,8 +61,8 @@ defining it with the ``console.command`` tag:
             ->addTag('console.command')
         ;
 
-Use Case: Using Dependencies and Parameters to Set Default Values for Options
------------------------------------------------------------------------------
+Using Dependencies and Parameters to Set Default Values for Options
+-------------------------------------------------------------------
 
 Imagine you want to provide a default value for the ``name``option. You could
 pass one of the following as the 5th argument of ``addOption()``:
@@ -111,3 +111,9 @@ constructor. The only solution is to inject them through it::
             $output->writeln($name);
         }
     }
+
+.. caution::
+
+    When running the console, every commands are instanciated, which means every
+    ``configure()`` methods are called. Be careful with database queries, as
+    this could impact performances.

Original file line number	Diff line number	Diff line change
@@ -61,8 +61,8 @@ defining it with the ``console.command`` tag:
`61`	`61`	`->addTag('console.command')`
`62`	`62`	`;`
`63`	`63`
`64`		`-Use Case: Using Dependencies and Parameters to Set Default Values for Options`
`65`		`------------------------------------------------------------------------------`
	`64`	`+Using Dependencies and Parameters to Set Default Values for Options`
	`65`	`+-------------------------------------------------------------------`
`66`	`66`
`67`	`67`	Imagine you want to provide a default value for the ``name``option. You could
`68`	`68`	pass one of the following as the 5th argument of ``addOption()``:
`@@ -111,3 +111,9 @@ constructor. The only solution is to inject them through it::`
`111`	`111`	`$output->writeln($name);`
`112`	`112`	`}`
`113`	`113`	`}`
	`114`	`+`
	`115`	`+.. caution::`
	`116`	`+`
	`117`	`+ When running the console, every commands are instanciated, which means every`
	`118`	+ ``configure()`` methods are called. Be careful with database queries, as
	`119`	`+ this could impact performances.`