First of all, I know that the logic should be in the controller and not in the view and I keep it that way.
But in this particular situation I need to use preg_match within a ternary operation to set the css class of a div.
Example:
{% for list in lists %}
<div class="{{ (preg_match(list.a, b))>0 ? something : else }}"...>...</div>
{% endfor %}
How can I achieve the (preg_match(list.a,b))>0 condition in twig?
Thanks in advance
For those who came here from Google search results (like me).
There's containment operator that allows you to do something like this:
{{ 'cd' in 'abcde' }} {# returns true #}
You can't use preg_match() directly but there are ways to accomplish it:
if your list is an entity, add a method matches(): {{ (list.matches(b)) ? something : else }}
you could create a custom Twig extension function that uses preg_match() internally http://symfony.com/doc/master/cookbook/templating/twig_extension.html
Expanding from Serge's comment and is the correct answer.
In my example my string is "Message Taken - 12456756". I can then use |split to convert it into an array and use |replace to get ride of white space.
{% set mt = 'Message Taken' in d.note %}
{% if mt == true %}
{#.. you can then do something that is true#}
{% set mt_array = d.note|split('-') %}
{{ mt_array[0] }} | {{ mt_array[1]|replace({' ' : ''}) }}
{% endif %}
This would output my string but I now control two parts instead of 1.
Related
I have a twig template where I would like to test if an item begins with a certain value
{% if item.ContentTypeId == '0x0120' %}
<td><a href='?parentId={{ item.Id }}'>{{ item.BaseName }}</a><br /></td>
{% else %}
<td><a href='?{{ item.UrlPrefix }}'>{{ item.LinkFilename }}</a></td>
{% endif %}
The 0x0120 can look like that or be more complex like this 0x0120D52000D430D2B0D8DD6F4BBB16123680E4F78700654036413B65C740B168E780DA0FB4BX. The only thing I want to do is to ensure that it starts with the 0x0120.
The ideal solution would be to solve this by using regex but I'm not aware if Twig supports this?
Thanks
You can do that directly in Twig now:
{% if 'World' starts with 'F' %}
{% endif %}
"Ends with" is also supported:
{% if 'Hello' ends with 'n' %}
{% endif %}
Other handy keywords also exist:
Complex string comparisons:
{% if phone matches '{^[\\d\\.]+$}' %} {% endif %}
(Note: double backslashes are converted to one backslash by twig)
String contains:
{{ 'cd' in 'abcde' }}
{{ 1 in [1, 2, 3] }}
See more information here: http://twig.sensiolabs.org/doc/templates.html#comparisons
Yes, Twig supports regular expressions in comparisons: http://twig.sensiolabs.org/doc/templates.html#comparisons
In your case it would be:
{% if item.ContentTypeId matches '/^0x0120.*/' %}
...
{% else %}
...
{% endif %}
You can just use the slice filter. Simply do:
{% if item.ContentTypeId[:6] == '0x0120' %}
{% endif %}
You can always make your own filter that performs the necessary comparison.
As per the docs:
When called by Twig, the PHP callable receives the left side of the filter (before the pipe |) as the first argument and the extra arguments passed to the filter (within parentheses ()) as extra arguments.
So here is a modified example.
Creating a filter is as simple as associating a name with a PHP
callable:
// an anonymous function
$filter = new Twig_SimpleFilter('compareBeginning', function ($longString, $startsWith) {
/* do your work here */
});
Then, add the filter to your Twig environment:
$twig = new Twig_Environment($loader);
$twig->addFilter($filter);
And here is how to use it in a template:
{% if item.ContentTypeId | compareBeginning('0x0120') == true %}
{# not sure of the precedence of | and == above, may need parentheses #}
I'm not a PHP guy, so I don't know how PHP does regexes, but the anonymous function above is designed to return true if $longString begins with $startsWith. I'm sure you'll find that trivial to implement.
I have a situation where I need to identify if there is a blank space in a variable in a twig template, and to treat it slightly differently.
Given names in this application are stored with middle initials in the given name field; they are not stored separately.
What I'm trying to achieve is this: Typically most given names are one word, e.g. "John" or "Susan" or something similar. In some of these cases we have cases where the middle initial is stored within this variable (e.g. John J)
Following standard citation standards, we need to be able to list items like this:
{{ surname }}, {{ given_name }}, ed.
This way it would appear like "Smith, John, ed." This is normally fine, however in some situations, where there is a middle initial, it appears as "Smith, John J, ed." - this is incorrect. I can't add a period after the given name, as "Smith, John., ed" would be an incorrect citation standard.
What I'm trying to do is to identify if a given_name contains a space, followed by a single letter, and then format it differently.
Something like this:
{% if given_name [has a blank space preceding a single letter] %}
{{ given_name }}., ed.
{% else %}
{{ given_name }}, ed.
{% endif %}
Is there a way to do this with regex within twig, or is there another method?
Thanks in advance
We can translate your requirement:
has a blank space preceding a single letter
In this little algorithm:
{% set given_name = 'John J' %}
{% set given_name_elems = given_name|split(' ') %}
{% set size = given_name_elems|length %}
{% if size >0 and given_name_elems[size-1]|length == 1%}
{ given_name }}., ed.
{%else%}
{{ given_name }}, ed.
{%endif%}
I suggest you to incapsulate this logic in a function or in a macro.
You could made some try in this working example
This is possible, but is not necessarily going to handle edge cases well. Assuming that you need to do the whole thing in twig, you could do something like this:
{% set nameArray = given_name | split(' ') %}
{% set first_name = nameArray[0] %}
{% set middle_initial = nameArray[1] is defined ? " "~nameArray[1]~"." : ""%}
At this point `middle_initial is now set to either an empty string or the middle initial with the period so you can output the full name like:
{{ surname }}, {{first_name ~ middle_initial}}, ed
You could use a regex with the matches comparison operator and add the dot if given_name matches the pattern.
{{ given_name }}{% if given_name matches '/^.+ .$/' %}.{% endif %}
Sorry, I didn't give you a good answer initially. I've updated my code and my twigfiddle. It's a bit simpler than #Matteo 's:
{% set given_name = 'John J' %}
{% set nameArray = given_name|split(' ') %}
{% if nameArray[1] is defined %}
{{ nameArray[0] }} {{ nameArray[1] }}., ed.
{% else %}
{{ nameArray[0] }}, ed.
{% endif %}
Where {{ nameArray[0] }} specifies the first element of the array. If nameArray1 contains anything, then it is defined.
Here is a working twigfiddle to show you it works.
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
Hi how use this part of code with twig,
$this->assign('title', 'Home');
not
echo $this->assign('title', 'Home');
I tried,
{% set assign = ('title', 'Home') %}
{% set this.assign = ('title', 'Home') %}
{% set assign = {'title', 'Home'} %}
{{ assign('title', 'Home') }}
But still don't work
Thanks you
I don't know about using $this in the context of a template (it would refer to some generated class instance), but you can perform arbitrary operations without printing by using the do statement.
The do tag works exactly like the regular variable expression ({{ ... }}) just that it doesn't print anything:
{% do 1 + 2 %}
To access the view itself when using TwigView, use the _view variable:
{% do _view.assign('title', 'Home') %}
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}"] }}