$tab=array("hello", "world");
if(!$session->has('session_val')) $session->set('session_val', $tab);
How can I remove all values of this session in twig file?
I have tried this:
{{ app.session.remove('session_val') }}
And I have an exception: Array to string conversion
You need to use flash() :-
{{ app.session.flash('session_val') }}
Or:-
{% set tmp = app.session.remove('session_val') %}
Recomendation:- As other suggested thattwig is not the right place to do so. it's for representation not for businness logic execution. Do it inside controller.
Related
I am using Twig and I have a problem.
I have a problem when I want to use a variable index for an object.
Here is my code:
{% for label, field in params.fields %}
{{ dump(data.field) }}
{% endfor %}
data is an object containing {'email': 'test#test.fr', 'name': 'John'}.
Field is an array of string containing ['email', 'name']
I can't show the value my object dynamically.
{{ dump(data.email) }} works.
How can I use dynamic indexes?
In Twig syntax, data.field is equal to $data['field'] in PHP. In other words, Twig use field as the array key name instead of taking the value of the field variable and use it as a key name.
If you want something similar to $data[$field], you can use the attribute() function:
The attribute function can be used to access a "dynamic" attribute of a variable:
Example:
{{ dump(attribute(data, field)) }}
{# or simply #}
{{ attribute(data, field) }}
I have a function in my Symfony controller which returns the following:
test+testString1+test2
TestController.php
public function getResultAction($fileName) {
$string1="test";
$string2="testString1";
$string3="test2";
$response = $string1."+".$string2."+".$string3;
return new Response($response);
}
In my twig I've rendered the function in my controller:
test.html.twig
{% set test %}
{{ render(controller('TestBundle:Test:getResult')) }}|split('+', 4)
{% endset %}
{{ test[0] }}
I'm using twig split filter so that I can display test, testString1 and test2 individually. But then whenever I attempt to display test[0], I receive the following error:
Impossible to access a key "0" on an object of class "Twig_Markup" that does not implement ArrayAccess interface in TestBundle:Test:test.html.twig
What's wrong with what I'm doing? I hope you could help me with this. Thanks
You miss the split filter inside the double brace as follow:
{% set test %}
{{ render(controller('TestBundle:Test:getResult')) |split('+', 4) }}
{% endset %}
Hovenever seems same problem with the set tag. From the doc:
The set tag can also be used to 'capture' chunks of text
Try with:
{%
set test=render(controller('TestBundle:Test:getResult'))|split('+', 4)
%}
Hope this help
i'm trying to make a loop in php while using twig and inside this loop,
i am creating a parameter which contains the record from the database query.
The problem is that when I use the parameter in my HTML file, it only return 1 record from the while loop, even if there are 3 or 4 or even more..
This is the php code I have:
public function getWidgetsByName($name)
{
global $params;
$get = $this->db->query("SELECT * FROM profile_items
WHERE category = 'widget'
AND username = '". $name ."'");
if($get)
{
while($key = $get->fetch())
{
$params["profile_widget_name"] = $key['name'];
}
}
}
And this is the HTML parameter in my HTML twig rendered file:
{{ profile_widget_name }}
The paremeters just get rendered how they are supposed to be rendered:
echo $twig->render('app/views/'. $_REQUEST['p'] .'.html', $params);
And yes the $params variable is an array, in the config it file it first gets used as $params = array("..." => "..."); and I add things to this array by doing $params["..."] = "...";
So, I hope someone can help me.
Thanks in advance,
Best Regards.
At the moment, the value of $params["profile_widget_name"] is just one string. Every time you go through the while loop, you overwrite the previous value of the key with the current value.
So when you pass $params to Twig, the value of profile_widget_name is the value of name in the last row of the database to be selected.
I think what you want instead is for the value of profile_widget_name to be an array. Then every time you go through the loop, the current value of name is added to the array, instead of overwriting it.
You do this by doing something like:
$params["profile_widget_names"][] = $key['name'];
Now in your Twig template, you'll need to do something like:
{% for profile_widget_name in profile_widget_names %}
{{ profile_widget_name }}
{% endfor %}
Using Multiple Parameters
If you want multiple parameters to be on there, you can do this:
$params["profile_widgets"][] = [
'pos_x' => $key['pos_x'],
'name' => $key['name'],
];
And in Twig:
{% for profile_widget in profile_widgets %}
Name: {{ profile_widget.name }}
Pos X: {{ profile_widget.pos_x }}
{% endfor %}
I have a specific problem with concat of twig.
When I trying to concatenate dynamic variables showing the error.
Here is my code :
{% set i = 0 %}
{% set nbLignes = codeEvt.nb_lignes_~i %}
{% set nbLignesRef = codeEvt.nb_lignes_ref_~i %}
But I have this error message :
Method "nb_lignes_" for object "\DTO\SuiviJourFonc" does not exist in XXXXXXXXX.html.twig at line 211
I would like to take codeEvt.nb_lignes_0 , but i would like build a "for" for others variables like nb_lignes_1, nb_lignes_2 , nb_lignes_3 ...
How can i do this ?
attribute can be used to access a dynamic attribute of a variable:
The attribute function was added in Twig 1.2.
{{ attribute(object, method) }}
{{ attribute(object, method,arguments) }}
{{ attribute(array, item) }}
Try like this,
{{ attribute(codeEvt, 'nb_lignes_ref_' ~ i) }}
You can try the array-like notation:
{{ codeEvt['nb_lignes_ref_' ~ i] }}
Or even use string interpolation:
{{ codeEvt["nb_lignes_ref_#{i}"] }}
How to call a variable's method in expression syntax in twig tempting system.
see the example below
{{ myObj.someMethod() }} {# this print the output of this method #}
i don't want above code because its printing output of this method.
but i want this
{% myObj.someMethod() %}
but its is giving me error that
Unknown tag name "myObj" in "
{% myObj.someMethod() %}" at line 2
even with above error method is also being called.
In twig syntax {{ some variable}} will print the result in variable you need to set variable and then use where you want
{% set myvar = myObj.someMethod() %} /* this will store the result returned from function */
{{ myvar }} /* this will print the result in myvar */