Converting an array into a string, transitioning from PHP to JavaScript

Question

Converting an array into a string, transitioning from PHP to JavaScript

Hey everyone, I'm currently working on passing an array to a JavaScript file and encountering this error:

An exception has been thrown during the rendering of a template ("Notice: Array to string conversion").

What I need is: data: ['2017/7','2017/8']

To achieve this in Twig, I did it like this: data: '{{ user_month_month }}'

When I vardump user_month_month, I see:

array(2) { [0]=> string(6) "2018-7" [1]=> string(6) "2018-8" }

I suspect that the issue lies in how I am calling it in the JS part. Any suggestions on what I should do?

If you're interested, here's my controller:

 // Controller code removed for brevity

Just to clarify, the date is intended for a graphic representation similar to this:

https://i.stack.imgur.com/oDOEs.png

Thank you to all who are willing to help out!

After trying DarkBee's method, the visualization looks like this:

https://i.stack.imgur.com/xM0bl.png

javascript php arrays type-conversion twig

Answer 1

Answer №1

If you want to efficiently transfer an array from twig to javascript, the best approach is to convert the array into a JSON format. Luckily, twig provides a convenient built-in filter called json_encode for this purpose:

data: {{ user_month_month | json_encode | raw }}

Answer 2

If you want to efficiently transfer an array from twig to javascript, the best approach is to convert the array into a JSON format. Luckily, twig provides a convenient built-in filter called json_encode for this purpose:

data: {{ user_month_month | json_encode | raw }}

Answer 3

Answer №2

If you're looking for the best way to pass data from Twig to JavaScript in Symfony, one recommended method is to store information in data attributes and then retrieve it in JavaScript later on. You can find more information in the official documentation.

When dealing with arrays, make sure to follow this pattern for it to function properly:

<div id="your-div" data-yourArray="{{ yourArray|json_encode|e('html_attr') }}">

Afterwards, utilize JSON.parse to parse your array in JavaScript.

It's worth noting that DarkBee's approach overlooks the usage of the escape filter, which may lead to unexpected behavior.

In your JavaScript code:

var yourDiv = document.getElementById('your-div');
var yourArray = JSON.parse(yourDiv.dataset.yourArray);

Answer 4

If you're looking for the best way to pass data from Twig to JavaScript in Symfony, one recommended method is to store information in data attributes and then retrieve it in JavaScript later on. You can find more information in the official documentation.

When dealing with arrays, make sure to follow this pattern for it to function properly:

<div id="your-div" data-yourArray="{{ yourArray|json_encode|e('html_attr') }}">

Afterwards, utilize JSON.parse to parse your array in JavaScript.

It's worth noting that DarkBee's approach overlooks the usage of the escape filter, which may lead to unexpected behavior.

In your JavaScript code:

var yourDiv = document.getElementById('your-div');
var yourArray = JSON.parse(yourDiv.dataset.yourArray);

Answer 5

Answer №3

<input type="text" id="txt"> <!-- // July 2017 August 2017 -->

<script>
    date = '{{ user_month_month[0] ~ ' ' ~ user_month_month[1] }}';
    alert(date); // July 2017 August 2017
    txt = document.getElementById('txt');
    txt.value = "{{ user_month_month[0] ~ ' ' ~ user_month_month[1] }}";
</script>

Answer 6

<input type="text" id="txt"> <!-- // July 2017 August 2017 -->

<script>
    date = '{{ user_month_month[0] ~ ' ' ~ user_month_month[1] }}';
    alert(date); // July 2017 August 2017
    txt = document.getElementById('txt');
    txt.value = "{{ user_month_month[0] ~ ' ' ~ user_month_month[1] }}";
</script>

Converting an array into a string, transitioning from PHP to JavaScript

Answer №1

Answer №2

Answer №3

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