Environment: Python 3.6, Flask 1.02, Jinja2
Objective:
Create a dynamic menu in layout.html (which is extended by content.html)
yet the url_for of the dynamic element is frequently requires a parameter to be passed
Issue statement:
How can I pass the parameters for url_for in Jinja template when rendering the template?
I feel like I would need the syntax of str().format in Jinja..
I tried to:
1. pass each part as a separate value:
menus = [{'url': 'func_name', 'menu_title': 'title', 'param': 'param_name', 'param_val': 'param_value'}]
return render_template('content1.html', menus=menus]
in jinja I tried to call it like: (I also tried it without the plus and double-quotes)
{{ url_for(func_name), param_name+ "=" + param_val }}
During rendering it gives error of
url_for() takes 1 positional argument but 2 were given
2. tried to use the {% set var_name: passed_variable %}
Built on 1st version of menus defined on server side, I tried to set the variables within Jinja, but also failed.
menus = [{'url': 'func_name', 'menu_title': 'title', 'param': 'param_name', 'param_val': 'param_value'}]
return render_template('content1.html', menus=menus]
Jinja
{% for menu in menus %}
{% set url = menu.get('url') %}
{% set param = menu.get('param') %}
{% set value = menu.get('param_val') %}
{% url_for(url, param + "=" + value %}
Yet it also didn't work.
It feels like if I give a param for the url_for syntax (not a hard-wired string) I cannot add the parameters.
3. tried to pass whole content of url_for as a string:
menus={'url_string': " 'func_name', param_name=param_value"}
yet it fails again as url_for syntacs put the whole between apostrophes, which I wouldn't need at the end.
Some references I scanned through.
Flask context-processor
It could work if I would create another template of each nav-bar for each content page - yet with that move i could simply move the navbar into the content page. However that seems dull. Stack Overflow topic
Thus question:
How can I pass the
param_id=paramval['id']
for the url_for syntax during rendering
{{ url_for('edit_question', param_id=paramval['id']) }}
The code/structure stg like below:
layout.html
<html>
<body>
{% for menu in menus %}
{% for key, value in menu.items() %}
<a href="{{ url_for(value) }}" >
{{ key }}
</a>
{% endfor %}
{% endfor %}
{% block content %}
{% endblock %}
</body>
</html>
content1.html
{% extends 'layout.html' %}
{% block content %}
content
{% endblock %}
content2.html
{% extends 'layout.html' %}
{% block content %}
content
{% endblock %}
app.py
#app.route('/')
def index():
menus = [{'menu_title1': 'menu_func_name1'}]
return render_template('content1.html', menus=menus)
#app.route('/menu_details/<int:menu_nr>')
def show_details_of_menu(menu_nr):
menus = [{'menu_title3': 'menu_func_name3', 'menu_param_name': 'menu_param_value'}
return render_template('content2.html', menus=menus)
sorry for the Wall of text..
sigh.. after hours I just found how to construct the syntax. I hope it will help others!
During rendering:
menus = [{'url': 'func_name', 'menu_title': 'title', 'parameters': {'param1': param1_value}}]
return render_template('context.html', menus=menus]
In Jinja, I adjusted the syntax to manage cases where no parameters are needed:
{% for menu in menus %}
{% if menu.get('parameters').items()|length > 0 %}
<a href="{{ url_for(menu.get('url'), **menu.get('parameters')) }}">
{{ menu.get('menu_title') }}
</a>
{% else %}
<a href="{{ url_for(menu.get('url')) }}">
{{ menu.get('menu_title') }}
</a>
{% endif %}
{% endfor %}
Related
I have a logic that wouldn't be easy to implement in EasyAdmin so I decided that I implement it in Symfony 6 then integrate it into EA. The integration worked like a charm but I can't figure out which form_theme should I use to look like the other EA forms.
I have created a form type which doesn't belong to any entity since multiple entities will be generated after the validation based on the input data.
This is the controller
<?php
namespace App\Controller\Admin;
use App\Form\Type\NewTextType;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
class TextController extends AbstractController
{
#[Route('/admin/text/new', name: 'new_text')]
public function new(): Response
{
$defaultData = [];
$form = $this->createForm(NewTextType::class, $defaultData);
if ($form->isSubmitted() && $form->isValid()) {
$data = $form->getData();
// process the data and persist them as different entities
// redirect to the empty form and do it again
}
return $this->renderForm('admin/text/new.html.twig', [
'form' => $form,
]);
}
}
and the template
{% extends '#EasyAdmin/page/content.html.twig' %}
{% form_theme form 'foundation_5_layout.html.twig' %}
{% block content_title %}
<h1 class="title">Add new Text</h1>
{% endblock %}
{% block main %}
{{ form(form) }}
{% endblock %}
Unfortunately it looks like a crap.
It looks better if I replace foundation_5_layout with {% form_theme form 'bootstrap_5_layout.html.twig' %} but then the appearance setting is not applied even though it is presented in the BODY tag:
data-ea-dark-scheme-is-enabled="true"
What do I miss here?
I use Symfony 6.1.2 and EasyAdmin 4.3.2
Finally I have found the right template which supports the Light/Dark appearance:
{% form_theme form '#EasyAdmin/crud/form_theme.html.twig' %}
The whole template
{% extends '#EasyAdmin/page/content.html.twig' %}
{% form_theme form '#EasyAdmin/crud/form_theme.html.twig' %}
{% block content_title %}
<h1 class="title">Add new Text</h1>
{% endblock %}
{% block main %}
{{ form(form) }}
{% endblock %}
I have Shopware 6.5.3. I was trying to extend "sw-users-permissions-user-detail" like this :
import template from './sw-users-permissions-user-detail.html.twig';
Shopware.Component.override('sw-users-permissions-user-detail', {
template
});
And file 'sw-users-permissions-user-detail.html.twig'
{% block sw_settings_user_detail %}
{% parent %}
{% block test %}
<p>Blabla</p>
{% endblock %}
{% endblock %}
It's not working at all, and I don't know why.
Any help ?
NB : It's working when I'm overriding other templates :
Component.override('sw-dashboard-index', {
template
});
If you want to put the original contents to the block, that you are overriding, you should use the 'parent' statement like this:
{{ parent() }}
One question please.
{{ dump(app.user.slugName) }}
If I do the above snippet in Twig, I get the slugName of the user loged ("my-user-2", i.e.) in the app (SlugName is an atribute of the entity user). Ok & Correct. But... I want to order this action from a var (var from BD data)
I have a variable named option which is set like this:
{% set option = 'app.user.slugName' %}
But when I'm trying output this variable with {{ dump(option)}} it returns app.user.slugName as literal. It does not return my-user-2.
Is there are any way in twig to solve this? It's a function to generate a menu, but some links needs some parameters.
I see what you mean, but Twig can't evaluate expression like that.
To achieve something like that you would need a snippet like this,
{% set value_methods = 'app.user.slugname' %}
{% set option_value = _context %}
{% for method in (value_methods|split('.')) if method != '' %}
{% set option_value = attribute(option_value, (method|replace({'()': '', }))) %}
{% endfor %}
{{ option_value }}
twigfiddle
(edit)
Remember you can create a macro to achieve some reusability for this snippet,
{% import _self as macros %}
{{ macros.evaluate(_context, 'app.user.slugname') }}
{% macro evaluate(context, value_methods) %}
{% set option_value = context %}
{% for method in (value_methods|split('.')) if method != '' %}
{% set option_value = attribute(option_value, (method|replace({'()': '', }))) %}
{% endfor %}
{{ option_value }}
{% endmacro %}
Im including a link.twig into block.twig, and block.twig into page.twig. in my set options is there a way I can change the link objects name to something like heroLink?
I need to set options within page.twig. link.twig is included into other templates so I dont want to change it (eg changing link.url to heroLink.url).
In my page:
{% set options = {
title: 'my title',
link: {
text: 'Search',
url: "www.google.com"
}
}
%}
{% include "block.twig" with options %}
In block.twig:
<div class="something">
<h2>{{ title }}</h2>
<div class="hero">
{% include "link.twig" with {'style': 'primary'} %}
</div>
</div>
In link.twig:
{{ link.text }}
The reason for this is that block.twig actually has other links. link.twig may be imported multiple times. As the mock object needs to be created in page.twig something like heroLink makes a lot more sense in this context.
In my page:
{% set options = {
action: {
text: 'Action',
url: "action.com"
}
}
%}
{% include "component.twig" with options %}
In component.twig:
{% import "link.twig" as mainLink %}
{{ mainLink.link(action.url, action.text) }}
In link.twig
{% macro link(url, text) %}
{{ text }}
{% endmacro %}
I am attempting if use a variable to call a specific macro name.
I have a macros file that is being imported
{% import 'form-elements.html.twig' as forms %}
Now in that file there are all the form element macros: text, textarea, select, radio etc.
I have an array variable that gets passed in that has an elements in it:
$elements = array(
array(
'type'=>'text,
'value'=>'some value',
'atts'=>null,
),
array(
'type'=>'text,
'value'=>'some other value',
'atts'=>null,
),
);
{{ elements }}
what im trying to do is generate those elements from the macros. they work just fine when called by name:
{{ forms.text(element.0.name,element.0.value,element.0.atts) }}
However what i want to do is something like this:
{% for element in elements %}
{{ forms[element.type](element.name,element.value,element.atts) }}
{% endfor %}
I have tried the following all resulting in the same error:
{{ forms["'"..element.type.."'"](element.name,element.value,element.atts) }}
{{ forms.(element.type)(element.name,element.value,element.atts) }}
{{ forms.{element.type}(element.name,element.value,element.atts) }}
This unfortunately throws the following error:
Fatal error: Uncaught exception 'LogicException' with message 'Attribute "value" does not exist for Node "Twig_Node_Expression_GetAttr".' in Twig\Environment.php on line 541
Any help or advice on a solution or a better schema to use would be very helpful.
I just thought other people may want the answer to this, as provide by fabpot:
This is indeed something that is not supported: calling a macro with a dynamic name (I have added a proper exception to be clearer about the issue).
If you really want to do that, you can do so with the following code:
{{ attribute(forms, element.type, [element.name,element.value,element.atts]) }}
-fabpot
https://github.com/twigphp/Twig/issues/922#issuecomment-11133299
Dynamic macros may not be supported in Twig.
But there is a simple workaround since you can dynamically include other templates.
Example:
Let's say you have a bunch of content modules or content blocks (or however you wanna call them) for your site. And you have Twig macros responsible of rendering each of these modules.
{# modules.twig #}
{% macro module1(config) %}
<div>module one</div>
{% endmacro %}
{% macro module2(config) %}
<div>module two</div>
{% endmacro %}
{% macro module3(config) %}
<div>module three</div>
{% endmacro %}
Now, what you need to dynamically call these macros is to add an extra template for each, like so:
{# module1.twig #}
{% import "modules.twig" as modules %}
{{ modules.module1(config) }}
{# module2.twig #}
{% import "modules.twig" as modules %}
{{ modules.module2(config) }}
{# module3.twig #}
{% import "modules.twig" as modules %}
{{ modules.module3(config) }}
Finally, in your actual page template you just include the template instead of calling the macro.
{# template.twig #}
{# this is the macro's name to be called #}
{% set macro = 'module2' %}
{# this is just a config object to be passed to the macro #}
{% set config = {} %}
{% include macro ~ '.twig' with { config: config } only %}
Et voilá, (dynamically produced) output will be <div>module two</div>.