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bugsymfony#3551 [Cookbook][Dynamic Form Modification] Fix sample code (rybakit)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closessymfony#3551).Discussion----------[Cookbook][Dynamic Form Modification] Fix sample codeCommits-------0497b38 [Cookbook][Dynamic Form Modification] Fix sample code

2 parents143db2f +66c4d77 commitde71a51Copy full SHA for de71a51

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cookbook/form
- dynamic_form_modification.rst

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`‎cookbook/form/dynamic_form_modification.rst`

Lines changed: 2 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -123,7 +123,7 @@ the event listener might look like the following::`
`123`	`123`	`// check if the Product object is "new"`
`124`	`124`	`// If no data is passed to the form, the data is "null".`
`125`	`125`	`// This should be considered a new "Product"`
`126`		`- if (!$product \|\| null!== $product->getId()) {`
	`126`	`+ if (!$product \|\| null=== $product->getId()) {`
`127`	`127`	`$form->add('name', 'text');`
`128`	`128`	`}`
`129`	`129`	`});`
`@@ -212,7 +212,7 @@ class::`
`212`	`212`	`$product = $event->getData();`
`213`	`213`	`$form = $event->getForm();`
`214`	`214`
`215`		`- if (!$product \|\| null!== $product->getId()) {`
	`215`	`+ if (!$product \|\| null=== $product->getId()) {`
`216`	`216`	`$form->add('name', 'text');`
`217`	`217`	`}`
`218`	`218`	`}`

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`‎cookbook/form/dynamic_form_modification.rst`

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