I get a list of collections right from Doctrine and I store them into an array.
For example:
$data['collList'] = $heyDoctrine->giveMeMyColls();
But I also want to retrieve some informations about these collections.
I store it into $data['collectionId'].
Until this point, everything works fine.
But in my Twig template, I want to create ordered lists with the name of my collection and every item of this list would be an information about this collection.
So, in PHP, I would do this:
foreach($data['collList'] as $collItem){
echo $collItem['name'];
echo '<ul>';
foreach($data[$collItem['id']] as $collItemData){
echo '<li>'.$collItemData.'</li>';
}
}
My problem is: how to do this with Twig?
I don't know how to say to Twig «hey, use «coll.id» as THE NAME of an other variable!
I've looked a bit and I've found the «attribute» function, but I wasn't able to make it work.
How should I do that?
Thanks a lot.
So, try next twig code:
{% for key, collItem in data.collList %}
{{ collItem.name }}
<ul>
{% for collItemData in data[collItem.key] if key == 'id' %}
<li> {{ collItemData }} </li>
{% endfor %}
</ul>
{% endfor %}
Related
I have a problem with properties in (probably) Twig. I have controller in Symfony where getCategories(), getWords(), getTranslations() methods (from Doctrine) return the objects (relations). Every property in the controller is an array because I call findAll() method (from Doctrine again) which returns the array. Finally I return all the properties from controller to view (Twig file) where I try display the results by Twig for loop.
The problem is the Twig loop only iterates over flashcards property (I know why ;)) and I have no idea how to make many-properties iterating. I'd like the loop to iterate over all properties returned by the controller.
In the controller foreach loop I tried update the flashcards array with new associative keys such as: category, word and translation so that all the results returned by Doctrine (including relations) are stored in one flashcards property but then Symfony throws exceptions.
I wondered if create one array in the controller to which I would push the flashcards, cateogry, word and translation arrays and then return this one array to the view but I don't think this is good practice.
Here's the controller method code:
public function showAllCards()
{
$flashcards = $this->getDoctrine()->getRepository(Flashcards::class)
->findAll();
foreach ($flashcards as $flashcard) {
$category = $flashcard->getCategories()->getName();
$word = $flashcard->getWords()->getWord();
$translation = $flashcard->getTranslations()->getWord();
}
return $this->render('try_me/index.html.twig', [
'flashcards' => $flashcards,
'category' => $category,
'word' => $word,
'translation' => $translation
]);
}
Here's the Twig loop code:
{% for flashcard in flashcards %}
{{ word }}
<br>
{{ flashcard.pronunciation }}
<br>
{{ flashcard.exampleSentence }}
<br>
{{ category }}
<br>
{{ translation }}
<br>
{% endfor %}
I tried to execute the following controller code...
public function showMeAll()
{
$flashcards = $this->getDoctrine()->getRepository(Flashcards::class)
->findAll();
foreach ($flashcards as $flashcard) {
$flashcards['categories'] = $flashcard->getCategories()->getName();
$flashcards['words'] = $flashcard->getWords()->getWord();
$flashcards['translations'] = $flashcard->getTranslations()->getWord();
}
return $this->render('try_me/index.html.twig', [
'flashcards' => $flashcards,
]);
}
...with the following Twig loop...
{% for flashcard in flashcards %}
{{ flashcard.words }}
<br>
{{ flashcard.pronunciation }}
<br>
{{ flashcard.exampleSentence }}
<br>
{{ flashcard.categories }}
<br>
{{ flashcard.translations }}
<br>
{% endfor %}
...but then Symfony says:
An exception has been thrown during the rendering of a template ("Catchable Fatal Error: Object of class Proxies__CG__\App\Entity\Words could not be converted to string").
Could you give me some tips how to solve this problem, please? I'd like the Twig loop to iterates over many properties (flashcard, word, category, translation). Or write if there's a better solution, please.
Thank you in advance for every answer!
According to your snippets, I'm guessing you want something like the following:
{% for flashcard in flashcards %}
{% for word in flashcard.getWords() %}
{{ word }}<br />
{% endfor %}
{{ flashcard.getPronunciation() }}<br>
{{ flashcard.getExampleSentence() }}<br>
{% for category in flashcard.getCategories()() %}
{{ category.getName() }}<br />
{% endfor %}
{% for translation in flashcard.getTranslations() %}
{{ translation.getWord() }}<br />
{% endfor %}
{% endfor %}
Have a look at this section of the documentation. Basically if you had foo.bar, twig will test if bar is a public property of foo and if not test if there is a public getter, getBar, to fetch bar.
Some sidenotes in both of your loops, the values category, word and translation will only hold the last value of your flashcards, because you are overwriting the value each time.
My table structure in my database is like this:
Some categories have a child category and some not. A product can belong to:
Child category
Parent Category (this category has NO child categories)
My array looks like this:
Category A is a parent category. Category B - Head is also a parent category. Category B - Child is a child category of B - Head.
Now I would like to show this array like this:
But I'm stuck on how to know if it's a category or a list of products. Can someone help me with this?
If you're using Doctrine Models (which if you're using Symfony, you should be) then all you're doing is looping through the methods on the object.
Quick and dirty example with few assumptions e.g. using #Template() annotation and standard DAOs aka EntityManager[s] as well as having getChildren() and getProducts() methods on the Category.php (AKA model/entity)
On the controller
/**
* #Route("/products", name="all_products")
* #Template()
*/
public function someAction()
{
...
$categories = $this->getCategoryManager()->findBy([]);
...
return [
'categories' => $categories
];
}
In your twig template
{% if categories|length > 0 %}
{% for category in categories %}
{% if category.children|length > 0 %}
... Here you create the HTML for nested ...
{% else %}
... Here you create the HTML for Category ...
{% for product in category.products %}
... Here you create the HTML for products ...
{% endfor %}
{% endif %}
{% endfor %}
{% else %}
.... some html to handle empty categories ....
{% endif %}
If the HTML for nested is repeated in the HTML for flat (very likely scenario) then you can create and include a macro to spit that out for you.
This is basic, but I think it pretty much covers what you're asking if I'm understanding your question properly.
Btw, you should definitely read the docs for twig and Symfony since they have examples like these everywhere.
I'll edit this answer if you respond as appropriate. Right now you haven't posted enough information to really guide you properly but hope this helps.
You could use a recursive macro. In the macro you either print the list of products or print the list of categories and then call itself.. and so on...
{% macro navigation(categories, products) %}
{% from '_macros.html.twig' import navigation %}
{% if categories|length > 0 or products|length > 0 %}
<ul>
{% for category in categories %}
<li>
{{ category.name }}
({{ category.children|length }} child(ren) & {{ category.products|length }} products)
{{ navigation(category.children, category.products) }}
</li>
{% endfor %}
{% for product in products %}
<li>{{ product.name }}</li>
{% endfor %}
</ul>
{% endif %}
{% endmacro %}
You would just use this in a template like...
{% from '_macros.html.twig' import navigation %}
{{ navigation(array_of_categories) }}
This just creates a basic set of nested unordered lists but then can be used with any HTML you want, obviously.
For a fiddle see http://twigfiddle.com/mzsq8z).
The fiddle renders as the following (twigfiddle only shows the HTLM rather than something you can use to visualize)...
I'd really love if anyone can help, I'm trying to figure out a way to loop through two queries in Twig. I can create it in PHP but I'm having doing the same thing on Twig. This is how I'd normally do it on PHP:
foreach($items as $item){
$product_id = $item;
$products = $app->db->table('products')->where('id', $product_id)->first();
echo "<li>" . $products->title . "</li>";
}
The above code will work fine but on Twig it will not loop to the next loop, but it will keep on looping the same thing.
Kindly help if you know how I can use Twig for loop like I use it above. I'm querying it using Laravel Eloquent in Slim.
This is what I did:
The controller
$products = $app->db->table('products')->where('trash', '0')->first();
The View
{% for item in items %}
{% set product_id = item.id %}
<li> {{ products.title }}</li>
{% endfor %}
It will only show the first row and repeat the samething.
Don't attempt to run queries from a template. Do it in the controller and pass the result to the template.
Also $items appears to be an array of IDs, so you should be able to load all of the products at once with a where-in condition (instead of multiple queries):
Controller:
$products = $app->db->table('products')->whereIn('id', $items)->get();
// pass $products to the template as "products"
Twig template:
{% for product in products %}
<li>{{ product.title }}</li>
{% endfor %}
I am trying to add pagination to my current project. I am pretty new to Symfony so I am not sure if there is something out there that can help me build such. My current code looks like this:
Controller class:
class MovieDisplayController extends Controller
{
public function showAction()
{
$movies = $this->getDoctrine()->getEntityManager()->getRepository('AppBundle:Movie')->FindAll();
return $this->render('movies/index.html.twig', array(
'movies' => $movies
));
}
}
Twig template:
{% block body %}
{% if movies|length == 0 %}
There are no movie items available. Add a movie here to get started.
{% elseif movies|length != 0 %}
These are the results: <br />
<ul>
{% for x in movies %}
<li>Title: {{ x.title }} - Price: {{ x.price }} - Edit - Details - Delete</li>
{% endfor %}
</ul>
Add more movie entries
{% endif %}
{% endblock %}
This will return all results within the database. I would like to only show 5 results (rows per page) and add paging buttons below the list and I wonder how/if this is possible?
The findAll() function will not work if you want to set limit.
You can try KnpPaginatorBundle to add pagination in symfony. It will work with fine to add pagination.
https://github.com/KnpLabs/KnpPaginatorBundle
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.