How to parse arrays of arrays with symfony/config?

Question

I want to parse a config of this structure:

$config = [
    'streams' => [
        'foo' => [
            [
                'id' => 'some-identifier',
                'type' => 'a',
            ],
            [
                'id' => 'some-other-identifier',
                'type' => 'b',
            ],
        ],
        'bar' => ...,
    ],
];

In this array streams is a predefined key and contains a map of multiple arbitrarily named streams. In this case there are two streams called foo and bar defined.

Every stream has an array of handlers. Every handler is a map with 2 attributes: id and type.

I ended up with:

$rootNode
    ->children()
        ->arrayNode('streams')
            ->prototype('array')
                ->children()

                ->end()
            ->end()
        ->end()
    ->end()
;

And now I'm in stuck on what would be next.

If I explain in English it would be: streams is a map of arrays of maps.

And with my code I could express it up to "is a map" and in stuck how to say it's "of arrays".

Any hints?

zerkms · Accepted Answer · 2015-06-24 02:09:59Z

3

That's how.

$rootNode
    ->children()
        ->arrayNode('streams')
            ->prototype('array')
                ->prototype('array')
                    ->children()
                        ->scalarNode('id')->end()
                        ->scalarNode('type')->end()
                    ->end()
                ->end()
            ->end()
        ->end()
    ->end()
;

Note that the outer prototype('array') does not have children()

answered Jun 24, 2015 at 2:09

zerkms

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