File-Upload-Form
================
Single File-Form
----------------
Add File-Upload in „foreign“ Entities:
**A. Define the Entity-Connection**
.. code-block:: php
/**
* @ORM\OneToOne(targetEntity="tpoint\FileBundle\Entity\File", cascade={"persist"}, orphanRemoval=true)
* @ORM\JoinColumn(name="file_id", referencedColumnName="id", nullable=false)
*/
private $file;
**B. Add Method to Entity** ``setFile(File $file = null)``
**C. Add Form-Field to FormType**
.. code-block:: php
use tpoint\FileBundle\Form\EventListener\FileFieldSubscriber;
...
$builder->addEventSubscriber(new FileFieldSubscriber());
**D. Add the JS-Formatting to the Template**
(http://www.jasny.net/bootstrap/javascript/#fileinput)
.. code-block:: html
The Source-Files (js+css) are not required, if you use the default-config for tpoint-standard (e.g. with grunt and minify/uglify).
**E. Show the File-Link in the Form, if there is a Document**
This ist checked via "required", because the field must not be empty, when there isn't a file uploaded
.. code-block:: php
{% if form.file.vars.required == false %}