How to access an element with an unknow name - twig

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 %}

Related

Opencart 3 TWIG: how to use AND operator

I'm trying to use the "AND" operator in TWIG in Opencart 3 and it doesn't work. Please tell me what I'm doing wrong.
I have some product attributes. And I want to make a condition that if two of the attribute with a specific ID are there, then the condition is met.
{% for attribute_group in attribute_groups %}
{% for attribute in attribute_group.attribute %}
{% if attribute.attribute_id == 2 and attribute.attribute_id == 3 %}
First condition
{% elseif attribute.attribute_id == 2 %}
Second condition
{% elseif attribute.attribute_id == 3 %}
Third condition
{% else %}
{% endif %}
{% endfor %}
{% endfor %
Here is text example:
if there is an attribute with ID equal 2 and an attribute with ID equal 3 then write "Floor/Number of floors".
if there is an attribute with ID equal 2 only then write "Floor"
if there is an attribute with ID equal 3 only then write "Numbers of floors".
Something can't be both X and Y at the same time. Furthermore this is something I'd advice you to test in the controller and not in the view.
Anyway if you wanted to do this in the view you will need to track of the found attributes. You could do this with two booleans or just add a counter.
{% set cnt = 0 %}
{% for attribute_group in attribute_groups %}
{% for attribute in attribute_group.attribute %}
{% if attribute.attribute_id == 2 or attribute.attribute_id == 3 %}
{% set cnt = cnt + 1 %}
{% endif %}
{% endfor %}
{% endfor %}
{% if cnt == 2 %}
{# do something #}
{% endif %}
You can simplify the if by using the test in
{% if attribute.attribute_id in [2, 3,] %}
Update of my answer because OP changed the requirements of the question
{% set words = [] %}
{% for attribute_group in attribute_groups %}
{% for attribute in attribute_group.attribute %}
{% if attribute.attribute_id == 2 %}
{% set words = words|merge(['Floor',]) %}
{% elseif attribute.attribute_id == 3 %}
{% set words = words|merge(['Numbers of floors',]) %}
{% endif %}
{% endfor %}
{% endfor %}
{% if words|default %}
{{ words|join('/') }}
{% endif %}
demo

How to render HTML to a variable

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 %}

Craft/Twig How to loop multiple key/value pairs and remove duplicates from that loop?

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

Use loop.index as part of template name to include with Twig?

I have an array of 3 items so in the following I'm including sub-component.twig 3 times:
{% for i in array %}
<div class="my-class">
{% include "sub-component.twig" %}
</div>
{% endfor %}
However I actually have 3 slightly different templates and I would like to load a different one for each iteration over the array:
sub-component-1.twig
sub-component-2.twig
sub-component-3.twig
When I print loop.index in the template the result is "1", "2" and "3". Can I therefore use the index to form the template name?
{% for i in array %}
<div class="my-class">
{{ loop.index }}
{% include ["sub-component-" ~ loop.index ~ ".twig"] %}
</div>
Possibly because I'm using gulp twig I had to break things out into variables for this to work.
https://github.com/zimmen/gulp-twig
{% for i in array %}
<div class="my-class">
{% set sub-component_1 = "sub-component-" %}
{% set sub-component_2 = loop.index %}
{% set sub-component_3 = ".twig" %}
{% set sub-component_full = sub-component_1 ~ sub-component_2 ~ sub-component_3 %}
{% include sub-component_full %}
</div>
{% endfor %}

Testing current value of cycle

I want to render blocks of HTML in alternate orientations. Is this the correct syntax in order to get the current value of cycle?
{% if ( {{ cycle(['odd', 'even']) }} == 'odd' ) %}
foo
{% elseif %}
bar
{% endif %}
cycle(['odd', 'even']) should not be inside {{ }} in the if
statement
cycle() should have a second parameter given that counts the amount of loops
the {% elseif %} should either have a condition or be changed to {% else %}
This is what you should do to get the code to work as you want it to (loop 10 times):
{% for i in 0..9 %}
{% if cycle(['odd', 'even'], i) == 'odd' %}
foo
{% else %}
bar
{% endif %}
{% endfor %}
If you want the for to loop objects you can use loop.index (starts at 1) instead of i:
{% for object in objects %}
{% if cycle(['even', 'odd'], loop.index) == 'odd' %}
foo
{% else %}
bar
{% endif %}
{% endfor %}
or loop.index0 (starts at 0):
{% for object in objects %}
{% if cycle(['odd', 'even'], loop.index0) == 'odd' %}
foo
{% else %}
bar
{% endif %}
{% endfor %}

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