Question: I'm trying to convert some form in my application over to symfony forms. I have a birthday value that i want to have empty values for and the empty values should be 'month' 'day' 'year' respectively and would display the translated versions of those words depending on your local. Right now i'm trying this with twig.

```
{{ form_row(form.birthday, {'empty_value':{ 'year':'title.year'|trans, 'month':'title.month'|trans, 'day':'title.day'|trans }}) }}

```

but that didn't work as i'm still seeing 'jan' '1' '1894' as my default values for the field.

this is how i defined it in the form:

```
->add(
    'birthday',
    'birthday',
    [
      'label' => false,
      'required' => true,
      'attr' => [
        'class' => 'date-fields'
      ]
    ]
)

```

is there a way to do this in twig or do i have to pass a translator to my form and generate the text in there?

Answer: 
Doesn't appear to be possible, though [the documentation](https://developer.apple.com/library/ios/documentation/General/Conceptual/ExtensibilityPG/ExtensibilityPG.pdf) doesn't explicitly state so. Two points are in conflict with each other, which might provide some insight.

> 
> The displayed name of your app extension is provided by the extension target’s `CFBundleDisplayName` value, which you can edit in the extension’s Info.plist file. If you don’t provide a value for the `CFBundleDisplayName` key, your extension uses the name of its containing app, as it appears in the `CFBundleName` value.
> 
> 
> 

This is not the case for Photo extensions — try it yourself. Changing either (or both) of these values in the extension's `Info.plist` does not change the name of the extension. The extension retains the name of the containing application. Then there's this:

> 
> Embed no more than one Photo Editing extension for each media type (photo, video) in a containing app. The Photos app displays to the user, at most, one extension of each type from a given containing app.
> 
> 
> 

While not explicit, this may indicate why you aren't currently able to change the name of a Photo extension. Because the containing application only presents a single Photo extension, maybe that's why the name can't be modified. Compare this to an app with a Today extension, where a containing app could present multiple extensions then requiring different names per extension.

Not a great reason, but it might provide insight.
Double click Project, select Target "extension" > Click Info

By setting name for "`Bundle display name (CFBundleDisplayName)`", the iOS share extension name can be changed to suit your need.

Using Xcode 7.2.1  

Deployment Target 9.2