Module: LiveCable::Connection::Broadcasting

Extended by:
ActiveSupport::Concern
Included in:
LiveCable::Connection
Defined in:
lib/live_cable/connection/broadcasting.rb

Instance Method Summary collapse

Instance Method Details

#broadcast_changeset ⇒ Array<LiveCable::Component>

Returns Components that were broadcast to (rendered or errored), including children rendered by their parents.

Returns:

  • (Array<LiveCable::Component>) —

    Components that were broadcast to (rendered or errored), including children rendered by their parents



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# File 'lib/live_cable/connection/broadcasting.rb', line 10

def broadcast_changeset
  rendered = []
  shared_changeset = containers[SHARED_CONTAINER]&.changeset

  # Use a copy of the components since new ones can get added while rendering
  # and causes an issue here.
  components.values.dup.each do |component|
    # Component may have already been re-rendered by a parent, so don't render it again
    next if rendered.include?(component)

    container = containers[component.live_id]

    next unless container&.changed? || component.shared_reactive_variables.intersect?(shared_changeset)

    begin
      component.broadcast_render
    rescue StandardError => error
      handle_error(component, error)
    end

    rendered |= [component] | component.rendered_children
  end

  # Deliver events from components that didn't broadcast a render this
  # cycle (no state change, or rendered inline by a parent) - rendered
  # components already flushed their events with the refresh
  components.each_value do |component|
    events = component.flush_events
    component.broadcast(_events: events) if events.any?
  end

  rendered
end