TWIG, Symfony2: Accessing value in one array based on value of another

Question

I've got 2 separate array's in separate session variables full of other arrays. I'm trying to pull out one attribute of an array based on the value output by another. It's essentially status codes in one (with other attributes) and a dictionary in the others.

They look like this :

Dictionary array

%array% [ { Id: '22', Name: 'Foo', Type: 'FooFoo', Description: 'More Foo', Enabled: 'true', Priority: 'number here' },
{ Id: '23', Name: 'Bar', Type: BarBar, Description: 'oh look more bars', Enabled: 'true', Priority: 'number here' },{...}]

and

Status array:

%array% [{ Id: '54', Name: 'Name goes here', Status: '23', BrandName: 'Brand'}],{...} }]

What i'm trying to do is something like

{%for Id in app.session.get('statusArray')%}
   {% if Id.Status in app.session.get('dictionaryArray')%}
      {{app.session.get('dictionaryArray').Name}}
   {% endif %}
{%endfor%}

I've also tried

{{attribute(app.session.get('dictionaryArray').Name, Id.Status)}}

Or something to that effect.

TL;DR

I need to pull out the Name from the Dictionary Array based upon the 'Status: ' given by the Status Array

Squazic · Accepted Answer · 2012-10-03 17:59:22Z

1

Okay so you have lots of issues in this code. Let's start with the data.

The data you have provided seem to be in the form of JSON arrays, not PHP arrays. As such, you have to decode them first using json_decode.

But those arrays are not valid JSON. To make them valid JSON, each of the keys and values need to have double quotes around them, i.e. "Id": "54" instead of Id: '54'.

Then, you have to set those variables into the session using $this->getRequest()->getSession()->set('statusArray', $statusArray);, which I assume you're doing fine.

Next, your logic for your twig templates is incorrect. Since you have multiple associative arrays within an outer array, each item in your for loop is one of those associative arrays that corresponds with the JSON object enclosed in braces {}.

Code that will get done what you want is as follows:

{% for status in app.session.get('statusArray') %}
    {% for dict in app.session.get('dictionaryArray') %}
        {% if status.Status == dict.Id %}
            {{ dict.Name }}
        {% endif %}
    {% endfor %}
{% endfor %}

answered Oct 3, 2012 at 17:59

Squazic

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3 Comments

Adam Arold Over a year ago

That's an awful lot of ifs. Maybe you can work around that.

Squazic Over a year ago

@AdamArold Well you could make an associative array of dict Id to Name in the controller and use that instead, but then you'd be limited to that info. I don't know what else the OP might need.

Drew Landgrave Over a year ago

Thank you :). In my controller i did json_decode the array's. I was trying to protect some company data so i may have screwed up the arryas :P's. Your solution worked however thank you very much.

Craig Wayne · Accepted Answer · 2016-06-30 15:35:43Z

0

I found this to work...

in php file:

$session = $this->get('session');
$session->set('user',array(
    'nickname' => 'Joe'
));

in twig template:

<p>{{ app.session.get('user')['nickname'] }}</p>

HOWEVER if the key does not exist, an exception is thrown.

answered Jun 30, 2016 at 15:35

Craig Wayne

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