Views

[TheFirstAvenger]

We need a way to dynamically manage View helpers.

Context:
In DeadViews, we have a Controller, a Template, and a View, and helpers for the Template go in the View. In LiveView, these helpers go in the LiveView module. For Beacon, we don't have a LiveView module that the end user can modify, we dynamically load the template based on the path, and #19 will define the event handling.

Instead of having the developer hard code views, we should provide view helpers that are scoped to the template being rendered.

[leandrocp]

Hi @TheFirstAvenger is the idea to implement something similar to page events? For eg:

page =
  Pages.create_page!(%{
    path: "home",
    site: "my_site",
    layout_id: layout.id,
    template: """
    <main>
      <%= hello_upcase(%{name: "something"}) %>
    </main>
    """
  })

Pages.create_page_helper!(%{
  page_id: page.id,
  helper_name: "hello_upcase",
  code: """
    String.upcase(args.name)
  """
})

And then inject def hello_upcase(args) in the generated LiveView for the end user. I'm just not sure about args, we need a way to make sure we're expanding all args passed from the template so I'm thinking we can force it to be a map to mimic how assigns works.

Does it make sense?

[TheFirstAvenger]

@leandrocp Yeah, that is exactly the idea. We could let them specify the arg string so they can build it how they want it (e.g. with pattern matching).

[leandrocp]

Gotcha I'm gonna work on it.