I have two loops in Twig. One is to check the stock level of a product, the other is to display some product options. I'm trying to create a variable from one loop which I can use inside the other to add a class name to a list(s).
I can't get that to work. Any help is more then welcome...
What I have is this:
{% set stockLevel = '' %}
{% for variant in product.variants %}
{% set stockLevel = variant.stock.level %}
{{ stockLevel }} // gives 1 0 1 1 (So all sizes except the second one are available)
{% endfor %}
{% for option in product.options %}
<ul class="optionslist">
{% if option.values %}
{% for value in option.values %}
<li class=" {% if stockLevel == 0 %}not_on_stock {% endif %}" >
<a class="item">etc...</a>
</li>
{% endfor %}
{% endif %}
</ul>
{% endfor %}
I believe there is something wrong the way you are handling your data. Right now, event if your variable was accessible in your second for loop, the value of it would be the one set lastly and your script would've failed anyway.
I can suggest a bit of a hacky way, feel free to improvise or use the idea behind it.
Say, we assign an empty array:
{% set variantsArray = [] %}
Then, we will use the filter merge to fill it with some dummy data(that's where your first loop comes into play)
{% for number in 1..5 %}
{% set variantsArray = variantsArray | merge([number]) %}
{% endfor %}
Then to be sure, we can access all the values there, we will just dump it out(that's where your second loop comes)
{% for index in 1..3 %}
{{ dump(variantsArray) }}
{% endfor %}
The following dump generated:
array:5 [▼
0 => 1
1 => 2
2 => 3
3 => 4
4 => 5
]
Hope you got the idea. Any suggestions are kindly welcome.
I am not sure what you are trying to do, how do you get your stock level from the variants? i think it is better to have a service function which help you get your stock level by product, the code would be cleaner :
controller action
$stock_helper = $this->container->get('stockhelper_service');
$stocklevel = $stock_helper->getStockLevelByProduct($product); //getstocklevelbyproduct handle your logic and return the stock level integer.
pass this variable to the twig.
One variable in your twig, no loops there, clean view, understandable code in your view and action.
Ok, I found the solution. The trick is to "connect" both values. Like so:
{% for option in product.options %}
{% if option.values %}
<ul id="product_configure_option2_{{ option.id }}" data-id="{{ option.id }}">
{% for value in option.values %}
{% set stock = null %}
{% for variant in product.variants **if variant.title == (option.title ~ ': ' ~ value.title)** %}
{% set stock = variant.stock %}
{% endfor %}
<li value="{{ value.id }}"{% if not stock.available %} class="not_on_stock"{% endif %}>{{ value.title }}</li>
{% endfor %}
</ul>
{% endif %}
{% endfor %}
Related
I use the following Twig 2 code:
{% for item in items if item.foo == 'bar' %}
<span class="{% if loop.index % 2 %}special-class{% endif %}">
{{ item.value }}
</span>
{% else %}
Nothing found
{% endfor %}
In the twig docs: https://twig.symfony.com/doc/2.x/deprecated.html
Adding an if condition on a for tag is deprecated in Twig 2.10. Use a filter filter or an "if" condition inside the "for" body instead (if your condition depends on a variable updated inside the loop)
I wonder how I migrate my Twig 2 code to Twig 3. As you see I use the loop variable and else in the for loop. I know that I can use a new parameter and increase it myself... but it that really the intention? How do I rewrite this code using filter?
You have two options to solve this
Place the if-tag inside the loop
{% set i = 0 %}
{% for item in items %}
{% if item.foo == 'foo' %}
<span class="{% if i % 2 %}special-class{% endif %}">
{{ item.value }}
</span>
{% set i = i + 1 %}
{% endif %}
{% else %}
Nothing found
{% endfor %}
With this solution you can't "rely" on the internal loop variable, as the counter keeps going up whether or not the condition was met
Use the filter - filter
{% for item in items | filter(item => item.foo == 'foo') %}
<span class="{% if loop.index % 2 %}special-class{% endif %}">
{{ item.value }}
</span>
{% else %}
Nothing found
{% endfor %}
updated demo
Using the filter filter your code would look something like this (see also https://twigfiddle.com/9hiayc and https://twigfiddle.com/9hiayc/2):
{% for item in items|filter(i => i.foo == 'bar') %}
<span class="{% if loop.index % 2 %}special-class{% endif %}">
{{ item.value }}
</span>
{% else %}
Nothing found
{% endfor %}
Since I'm using a SaaS platform I don't have much space to do things differently.
I have two for loops in Twig:
{% for option in product.options %}
{{ option.title }}
{% if option.values %}
{% for value in option.values %}
{{ value.title }}
{% endfor %}
{% endif %}
{% endfor %}
{% for variant in product.variants %}
{{ variant.stock.level }}
{% endfor %}
What I try to do is to use variant.stock.level value inside the product.options for loop to show some HTML. This value always match the corresponding index value of the other for loop. I also think that's the only way to do this.
So what I mean is.....Let's say both for loops contain 3 elements.
Option1
Option2
Option3
Variant1
Variant2
Variant3
So option1 needs to have the value from variant1.
For the end result I need to know what the value of eg Variant1 is to show some HTML like so:
{% for value in option.values %}
{% check if value from corresponding variant is greater then 0 %}
<li class="on-stock">{{ value.title }}</li>
{% else %}
<li class="out-of-stock">{{ value.title }}</li>
{% endif %}
{% endfor %}
I don't know no other way to explain this :) Any help appreciated....
You are looking for attribute.
The attribute function can be used to access a "dynamic" attribute of a variable
Since the indexes are the same, you can use loop.index0
Example for your case
{% if attribute(option.variants, loop.index0) > 0 %}
// some stuff
{% endif %}
I'm not sure if I understood you correctly but you may use key from first loop to access product.variants with the same index.
{% for key, option in product.options %}
{{ option.title }}
{% if option.values %}
{% for value in option.values %}
{{ value.title }}
{% endfor %}
{% endif %}
{{ product.variants[key].stock.level }}
{% endfor %}
First of all I'm learning Twig.
I was wondering if it is possible wit Twig to compare two different values from different arrays/lists?!
I have two list of items I call them like so:
{% if page.cart %}
{% for product in page.cart.products %}
{{ product.id }}
{% endfor %}
{% endif %}
And:
{% if products %}
{% for product in products %}
{{ product.id }}
{% endfor %}
{% endif %}
I want to compare both product.id's so I can create a new statement. Is there any way to compare both values? The idea is to check if an id is present in page.cart.products and if so then do something.
I want to create a new statement to display some info. Something like so:
{% if page.cart %}
{% for product in page.cart.products %}
{% set cartId %}{{ product.id }}{% endset %}
{% endfor %}
{% endif %}
{% if products %}
{% for product in products %}
{% set listId %}{{ product.id }}{% endset %}
{% endfor %}
{% endif %}
{% if cartId == listId %}
.... do this ....
{% endif %}
Any help greatly appreciated!
You can loop over one array and check if the id is present in the second one. If it's there, you can do something.
{# In case you want to store them, you can do so in an array #}
{% set repeatedIds = [] %}
{% for productCart in page.cart.products if page.cart %}
{% for product in products if products %}
{% if productCart.id == product.id %}
<p>This id -> {{ product.id }} is already in page.cart.products</p>
{% set repeatedIds = repeatedIds|merge([product.id]) %}
{% endif %}
{% endfor %}
{% endfor %}
{{ dump(repeatedIds) }}
It's a very basic search algorithm and the cost is quadratic. Obviously, there are more efficient ways to look for an element in an array (though more complicated to implement).
If the amount of products you have to deal with is not very big, you could use this solution. However, if you have, let's say, more than one hundred products in each array (or you feel that the algorithm is slowing down your loading time), you could do this process in the controller using more sophisticated methods and PHP and just pass the result to the template.
Hope it helps.
I have loop in Twig template:
{% for item in 1..0 %}
{{ item }}
{% endfor %}
(of course in real life instead of 0 there is variable value). I would expect in this example that loop won't be executed because 0 is lower than 1. But in fact it displays
1 0
Question: is there any way in this example using simple for loop in Twig (or other loop) to tell Twig I want to iterate ++ not -- or I have to add condition to check before loop if 0 is lower than 1
EDIT:
Of course I'm aware I can create array in PHP and use it in Twig template but what about this case - without creating array in PHP
EDIT2:
I want it simple use for generating star rating. Now I need to have code because I had to add extra if checking for each for loop:
{% if full_stars_number >= 1 %}
{% for item in 1..full_stars_number %}
<img src="img/full_star.png" />
{% endfor %}
{% endif %}
{% if half_stars_number >= 1 %}
{% for item in 1..half_stars_number %}
<img src="img/half_star.png" />
{% endfor %}
{% endif %}
{% if empty_stars_number >= 1 %}
{% for item in 1..empty_stars_number %}
<img src="img/empty_star.png" />
{% endfor %}
{% endif %}
Try this:
{% for item in 1..full_stars_number if full_stars_number>0 %}
<img src="img/full_star.png" />
{% endfor %}
{% for item in 1..half_stars_number if half_stars_number>0 %}
<img src="img/half_star.png" />
{% endfor %}
{% for item in 1..empty_stars_number if empty_stars_number>0 %}
<img src="img/empty_star.png" />
{% endfor %}
This is basically the same as what you already did in your EDIT2, but in a slightly more concise way.
1..x generates a collection, with inclusive values. It can be ordered ascending or descending. This is expected.
I'm not sure what you are trying to achieve, but the way you described it is not possible in twig out of the box.
You could write your own twig function, which would generate the values, or return an empty array:
{% set itemsCount = 0 %}
{% for item in my_crazy_function(itemsCount) %}
{{ item }}
{% endfor %}
Edit:
If you simply want to repeat a value number of times you could write a twig filter:
{{ '<img src="img/empty_star.png" />' | repeat(5) }}
A function implementation could just be a call to PHP's str_repeat:
class Project_Twig_Extension extends Twig_Extension
{
public function getFilters()
{
return array(
new Twig_SimpleFilter('repeat', 'str_repeat'),
);
}
// ...
}
I am implementing an alphabetical search.
We display a table of Names. I want to highlight only those alphabets, which have names that begin with the corresponding alphabet.
I am stumped with a simple problem.
How to read the first character in the string user.name within twig.
I have tried several strategies, including the [0] operation but it throws an exception.
Here is the code
{% for i in ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','0-9'] %}
{% set has_user_starting_with_alphabet = false %}
{% for user in pagination %}
{% if user.name[0]|lower == i %}
{% set has_user_starting_with_alphabet = true %}
{% endif %}
{% endfor %}
{% if has_user_starting_with_alphabet %}
<li><span>{{ i }}</span></li>
{% endif %}
{% endfor %}
Is there some function like "starts_with" in twig?
Since twig 1.12.2 you can use first:
{% if user.name|first|lower == i %}
For older version you can use slice:
{% if user.name|slice(0, 1)|lower == i %}
Note: You may also use this notation:
{% if user.name[:1]|lower == i %}