I want to invert my array so that the categories are first so that I can better manage my foreach later. I managed to achieve it, but merge has removed the same keys. And I should not add value as another item in the array.
Default Array:
array:10 [
0 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 1"
category: "Cat1"
}
]
1 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 2"
category: "Cat2"
}
]
2 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 3"
category: "Cat1"
}
]
3 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 4"
category: "Cat2"
}
]
After Merge: ( two records have been deleted :()
array:2 [
"Cat1" => array:2 [
"type" => "type1"
"object" => ...
]
"Cat2" => array:2 [
"type" => "type1"
"object" => ...
]
]
What is he trying to achieve?
array:2 [
"Cat1" => array:2 [
0 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 1"
category: "Cat1"
}
]
1 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 3"
category: "Cat1"
}
]
]
"Cat2" => array:2 [
0 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 2"
category: "Cat2"
}
]
1 => array:2 [
"type" => "type1"
"object" => {
name: "Sample name 4"
category: "Cat2"
}
]
]
]
Code:
{% set organised_cats = {} %}
{% for element in sourceElements %}
{% set organised_cats = organised_cats|merge({
(element.object.category) : element
}) %}
{% endfor %}
Advertisement
Answer
First a FYI though, this is not something you should be doing in the template, cause the code is pretty messy. Anyway here is how you merge/group arrays in twig:
{% set output = [] %}
{% for item in items %}
{% if not attribute(output, item.object.category) is defined %}
{% set output = output|merge({ (item.object.category) : {}, }) %}
{% endif %}
{% set output = output|merge({(item.object.category) : output[item.object.category] | merge([ item, ]) }) %}
{% endfor %}
{% for category, items in output %}
{{ category }}:
{% for item in items %}
{{ item.object.name }}
{% endfor %}
{% endfor %}