Show array with variable in Symfony

Question

In my symfony project, I pass from the Controller a variable called 'button'.

In this case 'button' has the value 'content' but this is not always.

I need it to display the content of phrase.content in the '.html.twig' file but I can't.

index.html.twig:

button = 'content'

{% for frase in frases %}

    <tr>
        <th scope="row">{{ frase.id }}</th>
        <td>{{ frase. ~ button }}</td>
    </tr>

{% endfor %}

I have tried like this but it gives me the following error:

Expected name or number. (500 Internal Server Error)

----EDIT----

If I put frase.content directly it does, but if I put frase[button], it gives an error

Impossible to access a key" content"on an object of class" App \ Entity \ Frase"
that does not implement ArrayAccess interface.

frase[button]. done.

Jakumi
– Jakumi

2020-05-29 23:15:16 +00:00
Commented May 29, 2020 at 23:15 — Jakumi
– Jakumi, Commented May 29, 2020 at 23:15

Nick_R · Accepted Answer · 2020-05-30 11:05:54Z

2

I believe this twig's check could solve your problem:

{% if foo.bar is defined %}

See doc: https://twig.symfony.com/doc/2.x/tests/defined.html

Also If you want to access object's property you can use twig function

attribute

Link https://twig.symfony.com/doc/2.x/functions/attribute.html

So in your case it would be something like:

{{ attribute(frase, button) ?? '' }}

Also you can additionally check if 'button' variable is defined

edited May 30, 2020 at 11:05

answered May 30, 2020 at 10:47

Nick_R

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Comments

Stratadox · Accepted Answer · 2020-05-29 23:19:19Z

0

frase. expects something after the dot. A dot like this in twig is kind of like 's: In the table header you ask for frase's id. In the table definition (td) element, twig essentially thinks:

frase's " ~ button"?? I was expecting a property!

If button contains the name of the property you wish to show, you can use:

frase[button]

In that case, if button is "content", twig will read it as

frase's content

PS: did you mean {% for phrase in phrases %}?

answered May 29, 2020 at 23:19

Stratadox

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1 Comment

DAVID It's me Over a year ago

If I put frase.content directly it does, but if I put frase[button], it gives an error

Impossible to access a key" content"on an object of class" App \ Entity \ Frase"that does not implement ArrayAccess interface.

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