DSL for handling events

Instead of:

def process(txn) do
  cond do
    insert_event?(:user_account, txn) ->
      {:ok, user_account} = event(:user_account, txn)
      IO.inspect(user_account_insert_event: user_account)
      # do something with user_account data

    update_event?(:user_account, txn) ->
      {:ok, user_account} = event(:user_account, txn)
      IO.inspect(user_account_update_event: user_account)

    # you can also specify the relation
    delete_event?("public.user_account", txn) ->
      {:ok, user_account} = event(:user_account, txn)
      IO.inspect(user_account_delete_event: user_account)

    true ->
      nil
  end
end

A DSL like this would be neat:

on_update(:user_account) do
  # code here
end

cpursley / walex

DSL for handling events #18