Recursive ViewComponent calls

[pgruener]

Hi,

I started to migrate own ruby-view-component-classes, with similar approach of ViewComponent, as ViewComponent solved several things pretty well.

But when it comes to the recursive rendering, I cannot find a solution unfortunately.. first thing was, that I thought I found a bug, but indeed it looks like I'm trying it wrong or it's not possible and I should find the proper way.

Let's say I have two Components: TreeComponent and TreeNodeComponent.
I also have a mixin module, which is included in both components, which just defines the layer slots:

renders_many :nodes, 'TreeNode'

So each "layer" has several sub nodes. It seems theres no problem with it so far.

In the haml view it looks similar to this:

= render TreeComponent.new(title: '..') do |tree|
  = tree.node(title: '...', icon: '') do
    ...

  = tree.node(title: '...', icon: '') do
    ...

The problem starts, when I want to change or access the node properties, as the node instance is not populated, like it is on the root TreeComponent, where I can reference the tree within the block.

= render TreeComponent.new(title: '..') do |tree|
  = tree.node(title: '...', icon: '') do |node|
    - node.changable_url = url_for(....)
    
    = node.node(title: '...', icon: '') do |node_level_2|
        ... 

Why isnt the built Component-Instance propagated to the corresponding slot? Am I missing something, or am I framed wrong, with the bias to "just migrate" our components?

Thanks alot!