I'm new to twig, facing some issue on for loop.
For loop how to get key
{% set data = {pounds: {all: {year: {2012: 123,2013:234,2014:500}}}} %}
{% set i = {0:2012,1:2013,2:2014} %}
{% for years,value in data.millions.all %}
{% for key,val in i %}
{{ value.val }}
{% endfor %}
{% endfor %}
After execute i got below error
#1 Type Twig_Error_Runtime
#2 Message Key "val" for array with keys "2012, 2013, 2014" does not exist.
#3 At twigfiddle:environment/KGoFPP6aiGA8cNzG/twig/main.twig:5
Expected output
123
234
500
Ref : https://twigfiddle.com/1c6rsv
Help is appreciated
Related
I need to render a list of HTML elements with content and put it into a variable. How can I do this efficient in twig?
e.g. I need to render the post tracking URLs from an order which can have several shippings / parcels.
{% for delivery in order.deliveries %}
{% for trackingCode in delivery.getTrackingCodes() %}
{{ trackingCode }}<br/>
{% endfor %}
{% endfor %}
Instead of printing this directly into the output I like first to put this rendered output into a variable like
{% set output = ... %}
...
{{ output }}
How can I do this in twig?
Just the concatenate the html to the output variable. Keep in mind you'll need to define to the variable outside the for-loop in order to use it outside the loop.
{% set foo = '' %}
{% for i in 1..10 %}
{% set foo = foo ~ ''~i~'' %}
{% endfor %}
{{ foo|raw }}
demo
After long search I found a better more efficient way
you can use {% set var %} with {% endset %} as a whole output block. Means the whole output will be set to the variable. This makes the life much easier and readable.
e.g.
{% set trackingText %}
{% for delivery in order.deliveries %}
{% for trackingCode in delivery.getTrackingCodes() %}
{{ trackingCode }}<br/>
{% endfor %}
{% endfor %}
{% endset %}
...
{% if trackingText|trim is not empty %}
You can track the delivery by using the following URL:<br/>
{{ trackingText }}
<br/>
{% endif %}
I have a for-loop within another for-loop and I would like the inner for-loop to go through the array test[INDEX] with [INDEX] being the index of the outer for-loop. I know I can get the loops index with the variable {{ loop.index() }}, however I do not know how to apply that within the head of my inner loop.
I've tried {% for x in test.{{ loop.index0 }} %}, but that throws me the error
Expected name or number.
Is there any way to do this?
In twig you can also use the array notation to get values from a variable
A note here is that the default loop.index is 1 indexed so you might want to use loop.index0 to get the correct offset
{% for f in foo %}
- {{ f }}: {{ bar[loop.index0] }}
{% endfor %}
As an alternative you can also get the key in the {% for key, value ... format
{% for key, value in foo %}
- {{ value }}: {{ bar[key] }}
{% endfor %}
demo
edit
As for you comment, you can succesfuly use this in any inner-loop, here is a more readable example
{% for country in countries %}
{{ country }}:
{% if cities[loop.index0]|default %}
<ul>
{% for city in cities[loop.index0] %}
<li>{{ city }}</li>
{% endfor %}
</ul>
{% endif %}
{% endfor %}
demo
I need to show a value from an element but his name is not always the same.
In my "competence" object, I have 4 fields, let's say field_1, field_2, field_3, field_4, but in function of an other value, I only have to display on of them.
I have the value in an other field of my "competence" object, "field_niveau_attendu" (it is set to 1, 2, 3 or 4)
I tried to use a "set" function
{% set niveau = "field_descriptif_" ~ competence.field_niveau_attendu.value %}
<p class="">{{ competence.field_competences_transverses.entity.niveau.value }}</p>
but it won't work
if in field_competences_transverses you have only 4 fields (field_1, field_2, field_3, field_4) you can try to use "for"
{% if competence.field_niveau_attendu.value is defined %}
{% set niveau = competence.field_niveau_attendu.value %}
{% for descriptif in competence.field_competences_transverses.entity %}
{% if loop.index == niveau %}
{{ descriptif.value }}
{% endif %}
{% endfor %}
{% endif %}
In Craft CMS, I have child entries where each child has a location with "city" and "country" values assigned to it.
I'm looking to output a list of "City, Country" text but remove any duplicates as two or more children might share the same "city,country" pair.
It's important that I can reference the city and country value for each child separately, because I need to use the country value for displaying a flag for each child item in the list.
I've learned about and tried my hand at "twig hash" and "associative arrays" and found usable snippets but can't make it work together for my case.
This does not work:
{% set children = entry.children %}
{% set locations = {} %}
{% for child in children %}
{% set city = child.location.parts.locality %}
{% set country = child.location.parts.country %}
{% if city not in locations %}
{% set locations = locations|merge({ city : country }) %}
{% endif %}
{% endfor %}
{% for location in locations %}
{% for k, v in location %}
{{ k }}, {{ v }} <br />
{% endfor %}
{% endfor %}
If you want to let the city be the key of your array you will need to wrap them in parantheses so the variable will get interpreted by twig.
Also you don't need the double for loop, you are building a one dimensional array
{% set locations = {} %}
{% for child in children %}
{% set city = child.city %}
{% set country = child.country %}
{% if city not in locations %}
{% set locations = locations|merge({ (city) : country }) %}
{% endif %}
{% endfor %}
{% for k,v in locations %}
{{ k }}, {{ v }} <br />
{% endfor %}
demo
I am using Twig as templating engine and I am really loving it. However, now I have run in a situation which definitely mustbe accomplishable in a simpler way than I have found.
What I have right now is this:
{% for myVar in someArray %}
{% set found = 0 %}
{% for id, data in someOtherArray %}
{% if id == myVar %}
{{ myVar }} exists within someOtherArray.
{% set found = 1 %}
{% endif %}
{% endfor %}
{% if found == 0 %}
{{ myVar }} doesn't exist within someOtherArray.
{% endif %}
{% endfor %}
What I am looking for is something more like this:
{% for myVar in someArray %}
{% if myVar is in_array(array_keys(someOtherArray)) %}
{{ myVar }} exists within someOtherArray.
{% else %}
{{ myVar }} doesn't exist within someOtherArray.
{% endif %}
{% endfor %}
Is there a way to accomplish this which I haven't seen yet?
If I need to create my own extension, how can I access myVar within the test function?
Thanks for your help!
You just have to change the second line of your second code-block from
{% if myVar is in_array(array_keys(someOtherArray)) %}
to
{% if myVar in someOtherArray|keys %}
in is the containment-operator and keys a filter that returns an arrays keys.
Just to clear some things up here. The answer that was accepted does not do the same as PHP in_array.
To do the same as PHP in_array use following expression:
{% if myVar in myArray %}
If you want to negate this you should use this:
{% if myVar not in myArray %}
Try this
{% if var in ['foo', 'bar', 'beer'] %}
...
{% endif %}
another example following #jake stayman:
{% for key, item in row.divs %}
{% if (key not in [1,2,9]) %} // eliminate element 1,2,9
<li>{{ item }}</li>
{% endif %}
{% endfor %}
Though The above answers are right, I found something more user-friendly approach while using ternary operator.
{{ attachment in item['Attachments'][0] ? 'y' : 'n' }}
If someone need to work through foreach then,
{% for attachment in attachments %}
{{ attachment in item['Attachments'][0] ? 'y' : 'n' }}
{% endfor %}
It should help you.
{% for user in users if user.active and user.id not 1 %}
{{ user.name }}
{% endfor %}
More info: http://twig.sensiolabs.org/doc/tags/for.html
Here's one to complete the answers with all the possibilities of Twig these days:
To achieve something like this:
{% for myVar in someArray %}
{% if myVar in someOtherArray|keys %}
{{ myVar }} exists within someOtherArray.
{% else %}
{{ myVar }} doesn't exist within someOtherArray.
{% endif %}
{% endfor %}
(https://twigfiddle.com/0b5crp)
You could also use array mapping and have the following one-liner:
(Twig >= 1.41 or >= 2.10 or any 3.x version)
{{ someArray|map(myVar => myVar ~ (myVar not in someOtherArray|keys ? ' doesn\'t') ~ ' exists within someOtherArray.')|join('\n') }}
Which outputs something quite similar.
Also see this Twig fiddle: https://twigfiddle.com/dlxj9g
{% if myVar in myArray %} without keys helps me