Tag
Symfony
18 posts tagged Symfony.
09/02/2026
is_granted in Twig: roles and IS_AUTHENTICATED
is_granted takes more than roles, and picking the wrong one gives you a check that quietly passes when it should not. What each attribute tests, why role hierarchy makes ROLE_USER true for your admins, and where the check belongs.
09/02/2026
Leaving FOSUserBundle: what replaces each piece
The bundle is maintained only enough for existing projects to migrate off it. Every piece it provided now has a replacement in Symfony itself or in two small bundles - and the migration is mostly deletion.
09/02/2026
Rendering a Symfony form field by field in Twig
One call renders the whole form and gives you no say in the markup. Splitting it up is four functions, and the one that matters most is form_rest - the safety net that stops a forgotten field from silently disappearing.
09/02/2026
Twig autoescaping and the raw filter
Autoescaping makes Twig safe by default and makes |raw the fastest way to undo that. The catch is that HTML escaping is only correct in HTML - inside a script tag or an unquoted attribute, the default is the wrong answer.
09/02/2026
The N+1 you wrote in a Twig loop, and its fix
The query looks fine and the template looks fine. Together they issue one query per row, because a lazy association is loaded the moment a template touches it - and templates touch things the controller never did.
07/04/2019
Rendering a Twig template outside a controller
You do not need a controller to render Twig, and you should not pass the container around to get at it. Inject the Environment, and use createTemplate when the template itself comes from the database.
01/25/2016
Doctrine: joining entities with no association
In Symfony using Doctrine, if no association is available for two entities, you can still join them and treat them like they have a relationship. To do so, you have to use the “Join: WITH” method.
11/30/2015
Extending a parent Twig block with parent()
Define a block in a child template and it replaces the parent's version completely - which is rarely what you wanted for a block holding stylesheets or scripts. parent() puts the inherited content back.
06/11/2015
Adding a form error from a controller in Symfony
Some checks cannot live in a constraint because they need something the form does not know about. FormError attaches the message to a field, or to the form itself, so it renders where the user is looking.
04/28/2015
Show the logged-in user in a Twig template
The snippet everyone has saved uses app.user.username, which throws on every supported Symfony. Here is the version that works, which check to guard it with, and how to greet somebody by name rather than by email address.
04/14/2015
Dynamic field names in Twig with attribute() and ~
Dot notation cannot reach a property whose name you are building in the template. attribute() takes the name as a string, the tilde concatenates it, and `is defined` keeps the loop from throwing on a gap.
04/02/2015
How to show or access cookie values in Symfony Twig views
Strange how obscure it is to find a clear example of how to just access or show the value of a cookie in Twig, so here it is!
03/24/2015
Doctrine field type mappings: tinyint is a boolean
A MySQL tinyint is mapped to boolean regardless of its declared length, so a column holding 0 to 100 comes back as true. The full type table, and the two ways to get an integer back.
01/01/2015
Reading the current locale in Symfony
The locale lives on the Request, not in a global. How to reach it from a controller, from a service that has no request, and from a template - and where it is set before any of that.
01/01/2015
Limiting a Doctrine query with setMaxResults
Here is an example of a simple DQL query in a custom repository method meant to return a single array result. The following will return the latest result in case there are multiple contact records that match the…
11/19/2014
A card expiry month/year field in Symfony
The old answer was to render DateType's day dropdown and hide it with CSS. That works until somebody uses a screen reader. Two choice fields and a small transformer do the job honestly.
08/20/2014
invalid_message: what a failed transformer shows
A transformer that cannot convert what was typed throws, and Symfony turns that into a message the user reads. Left alone it says nothing useful; invalid_message is where you replace it.
11/19/2013
Knowing whether a Doctrine insert or update worked
Doctrine has no return value to check after flush() - it signals failure by throwing. Wrapping it is the right instinct, but the version of this snippet that has been circulating since 2013 catches nothing at all.