add index by id

Author: BeastyBlacksmith

src/app/dashapp.jl

@@ -40,6 +40,24 @@ mutable struct DashApp
 
 end
 
+const VecChildTypes = Union{NTuple{N, DashBase.Component} where {N}, Vector{<:DashBase.Component}}
+function Base.getindex(app::Dash.DashApp, id::AbstractString)
+  app.layout[id]
+end
+function Base.getindex(component::DashBase.Component, id::AbstractString)
+  component.id == id && return component
+  hasproperty(component, :children) || return nothing
+  cc = component.children
+  cc isa Union{VecChildTypes, DashBase.Component} ? cc[id] : nothing
+end
+function Base.getindex(children::VecChildTypes, id::AbstractString)
+  for element in children
+    element.id == id && return element
+    el = element[id]
+    el !== nothing && return el
+  end
+end
+
 #only name, index_string and layout are available to set
 function Base.setproperty!(app::DashApp, property::Symbol, value)
     property == :index_string && return set_index_string!(app, value)