Symfony Config: Array node or null

Question

Some of the features of my bundle are optional. In order to configure them, I'd like to have the following two options. If I want to enable the feature:

foo:
  feature:
    mandatory1: 'bar'
    mandatory2: 'bar2'

However, if I decide to not use this specific feature, I'd like to set feature to be null:

foo:
  feature: ~

I currently have the following code:

// ...
    ->arrayNode('feature')
        ->defaultNull()
        ->children()
            ->scalarNode('mandatory1')
                ->isRequired()
                ->cannotBeEmpty()
                ->end()
            ->scalarNode('mandatory2')
                ->isRequired()
                ->cannotBeEmpty()
                ->end()
            ->end()
        ->end()

However, the defaultNull() call is not allowed. Is there any way I can achieve this behaviour?

Martin · Accepted Answer · 2015-02-18 20:19:24Z

1

Actually, I found the answer by myself. Copied from the Symfony docs:

If you have entire sections which are optional and can be enabled/disabled, you can take advantage of the shortcut canBeEnabled() and canBeDisabled() methods.

answered Feb 18, 2015 at 20:19

Martin

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