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ecto_watch
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EctoWatch allows you to easily get Phoenix.PubSub notifications directly from postgresql.
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lib/ecto_watch/helpers.ex
defmodule EctoWatch.Helpers do
@moduledoc false
def label(schema_mod_or_label) do
if ecto_schema_mod?(schema_mod_or_label) do
module_to_label(schema_mod_or_label)
else
schema_mod_or_label
end
end
def module_to_label(module) do
module
|> Module.split()
|> Enum.join("_")
|> String.downcase()
end
def ecto_schema_mod?(schema_mod) do
schema_mod.__schema__(:fields)
true
rescue
UndefinedFunctionError -> false
end
def validate_list(list, func) when is_list(list) do
result =
list
|> Enum.map(func)
first_error =
result
|> Enum.find(&match?({:error, _}, &1))
first_error || {:ok, Enum.map(result, fn {:ok, value} -> value end)}
end
def validate_list(_, _) do
{:error, "should be a list"}
end
end