twig.md

Twig

The ems project heavily uses TWIG.

• ElasticMS Admin uses twig for: custom dashboards, views, actions, postprocessing, ..
• ElasticMS Web uses twig for creating webpages, redirect, pdf exports, file serving

• Twig
  • Twig cheatsheet
  • Symfony cheatsheet
  • elasticMS Common Bundle Extension for both ElasticMS Admin and ElasticMS Web

Twig cheatsheet

Tags
apply	deprecated	flush	import	use
autoescape	do	for	include	verbatim
block	embed	from	macro	with
cache	extends	if	set

Functions
attribute	cycle	include	random
block	date	max	range
constant	dump	min	source
country_timezones	html_classes	parent	template_from_string

Filters
abs	escape	join	number_format	timezone_name
batch	filter	json_encode	raw	title
capitalize	first	keys	reduce	trim
column	format	language_name	replace	u
convert_encoding	format_currency	last	reverse	upper
country_name	format_date	length	round	url_encode
currency_name	format_datetime	locale_name	slice
currency_symbol	format_number	lower	slug
data_uri	format_time	map	sort
date	html_to_markdown	markdown_to_html	spaceless
date_modify	inky_to_html	merge	split
default	inline_css	nl2br	striptags

Tests
constant	empty	null
defined	even	odd
divisibleby	iterable	sameas

Operators
in
is
Math (+, -, /, %, //, *, **)
Logic (and, or, not, (), b-and, b-xor, b-or)
Comparisons (==, !=, <, >, >=, <=, ===, starts with, ends with, matches)
Others (.., , ~, ., [], ?:, ??)

Symfony cheatsheet

Tags
trans
trans_default_domain

Filters
humanize	trans
yaml_encode	yaml_dump
serialize

Functions
absolute_url	expression	form_label	form_widget	relative_path
asset	form	form_parent	is_granted	render
asset_version	form_end	form_rest	logout_path	render_esi
controller	form_errors	form_row	logout_url	url
csrf_token	form_help	form_start	path

Common Bundle

The common's twig filters and functions are available in both ElasticMS Admin and in ElasticMS Web

Filter

ems_dom_crawler

This filter parses a string and returns a Symfony DomCrawler

Useful to extract content from a html string: {% set firstP = data.body_fr|ems_dom_crawler.filter('p').first.text %}

Another example for adding the class img-fluid to all img tags:

{% set crawler = body|emsch_routing|ems_dom_crawler %}
{% for img in crawler.filter('img') %}
    {% if img.getAttribute('class') == '' %}
        {% do img.setAttribute('class', 'img-fluid') %}
    {% endif %}
{% endfor %}
{{ crawler.filter('body').html()|raw }}

Function

ems_template_exists

Returns true if the template exists. Also for only locally defined templates.

{% set templateExists = ems_template_exists('@EMSCH/template/example.twig') %}