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Commit 5a4a8fc

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minor #11018 Improved the explanation of the block_name form option (javiereguiluz)
This PR was merged into the 3.4 branch. Discussion ---------- Improved the explanation of the block_name form option Fixes #4330. Commits ------- baf24e0 Improved the explanation of the block_name form option
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‎reference/forms/types/options/block_name.rst.inc

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**type**: ``string`` **default**: the form's name (see :ref:`Knowing which
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block to customize <form-customization-sidebar>`)
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Allows you to override the block name used to render the form type.
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Useful for example if you have multiple instances of the same form and you
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need to personalize the rendering of the forms individually.
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Allows you to add a custom block name to the ones used by default to render the
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form type. Useful for example if you have multiple instances of the same form
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and you need to personalize the rendering of the forms individually.
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If you set for example this option to ``my_custom_name`` and the field is of
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type ``text``, Symfony will use the following names (and in this order) to find
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the block used to render the widget of the field: ``_my_custom_name_widget``,
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``text_widget`` and ``form_widget``.

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