问题
I want to add support for flash messages on our pages. I implemented this by following the documentation found here.
I added the following snipplet to my base layout. (i also tried to add it to a specific action template).
{% if app.session.hasFlash('notice') %}
<div id="flashmessage" class="flash-notice">
{{ app.session.flash('notice') }}
</div>
{% endif %}
After adding the following error is thrown
Twig_Error_Runtime: Item "hasFlash" for "" does not exist in "MyBundle::layout.html.twig" at line 66
Is there anything else i need to do ?
回答1:
do you use symfony 2.0 or 2.1 (currently master branch)?
for symfony 2.1 the documentation is located here: http://symfony.com/doc/2.1/book/controller.html#flash-messages
flash messages are shown like this:
{% for flashMessage in app.session.flashbag.get('notice') %}
<div class="flash-notice">
{{ flashMessage }}
</div>
{% endfor %}
回答2:
Mmm check in your config file that you have auto-started the session:
session:
default_locale: %locale%
auto_start: true
Because the error seems to be that Twig doesn't find the session class, not something about the hasFlash function. In fact I have almost exactly the same code in my layout.
回答3:
This is pretty old at time of writing so imagine you've worked it out by now, but for reference sake, it's has
rather than hasFlash
. So..
{% if app.session.flashbag.has('notice') %}
<div id="flashmessage" class="flash-notice">
{{ app.session.flashbag.get('notice') }}
</div>
{% endif %}
回答4:
By symfony 2.6 +
{% if app.session.flashbag.has('notice') %}
{{ app.session.flashbag.get('notice').0 }}<br/>
{% endif %}
Because flashbag is by this version array you need foreach it or use index. I m using index because i dont need something more.
回答5:
In controller
$this->get('session')->getFlashBag()->add('notice', 'Your message!');
In your Twig file
{% for flashMessage in app.session.flashbag.get('notice') %}
<div class="alert alert-warning">{{ flashMessage }}</div>
{% endfor %}
回答6:
I just figure out that flash messages are not working if intercept_redirects
is true in debug mode.
回答7:
Did you set the flash message somewhere in your action?
$this->get('session')->setFlash('notice', 'Your changes were saved!');
Remember that flash messages will be stored on the user's session for exactly one additional request.
来源:https://stackoverflow.com/questions/8240110/flash-messages-in-symfony2-doesnt-seem-to-work-in-my-twig-template