JSON string data to Array in Edge

[gatotsayogya]

Hello, I have a controller which passing some data to views
const categories = await Category.all()
const post = await Post.findBy('post_id', params.post_id)
return view.render('backend.edit-post',{
categories: categories.toJSON(),
post: post.toJSON(),
})

in the edge file, I use post.tag(string data wich contains categories_id, eg: 1,2,3) from post(JSON data) to an Array data. I tried to use javascript parse and split in edge but no one works

this is my edge file to checked every cateogry_id in post.tag value
@each(category in categories)<p><label for="{{ category.category_id }}"><input type="checkbox" value="{{ category.category_id }}" name="category_id[]"
@if(in_array(category.category_id, post.tag))checked
@endif>{{ category.title }}</label></p>
@endeach

[thetutlage]

Can you please format your code blocks properly. Here's the link to the markdown guide https://guides.github.com/features/mastering-markdown/