CODEWITHSUNDEEP
symfonytwig
Prisoner
Prisoner

Reputation: 27638

Twig checking for object within object

I have a voting system in a Symfony application and I'm using the Twig Engine. I want to be able to do something like this within my template to show the user they've already voted (think StackOverflow orange arrows).

<div class="vote {% if entry.votes.user == loggedinuser %}already-voted{% endif %}">Vote</a>

The problem with this is though, each entry can have multiple votes (so votes is actually a PersistentCollection. I know I could do this with PHP or even by looping through each of the votes.user, but thats messy).

Upvotes: 1

Views: 813

Answers (2)

Michael Smith
Michael Smith

Reputation: 409

You could add a method to your entity so that your template would remain clean and the business logic would be tucked away in the entity similar to:

<div class="vote {% if entry.hasVoted(loggedinuser) %}already-voted{% endif %}">Vote</a>

Upvotes: 1

Juan Sosa
Juan Sosa

Reputation: 5280

You can use the in operator instead of iterating over each vote instance. According to Twig documentation the in filter will perform a containment test on strings, arrays, or objects implementing the Traversable interface.

Try the following:

<div class="vote {% if loggedinuser in entry.votes.user %}already-voted{% endif %}">Vote</a>

EDIT:

It seems like the in operator doesn´t work with an instance inside a Collection. I'm afraid you will need to iterate over each vote to check whether both users match or not.

In order to prevent things getting messy you could use a macro.

Hope it helps.

Upvotes: 0

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