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ash_phoenix
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Utilities for integrating Ash and Phoenix
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Files
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Files
lib/transformers/add_form_code_interfaces.ex
defmodule AshPhoenix.Transformers.AddFormCodeInterfaces do
@moduledoc false
use Spark.Dsl.Transformer
def after?(_), do: true
def transform(dsl_state) do
case Ash.Domain.Info.resource_references(dsl_state) do
[] ->
resource = Spark.Dsl.Transformer.get_persisted(dsl_state, :module)
dsl_state
|> Ash.Resource.Info.interfaces()
|> Enum.filter(&match?(%Ash.Resource.Interface{}, &1))
|> Enum.uniq_by(& &1.name)
|> Enum.reduce(dsl_state, &add_form_interface(&1, &2, resource, true))
|> then(&{:ok, &1})
references ->
references
|> Enum.reduce(dsl_state, fn reference, dsl_state ->
reference.definitions
|> Enum.filter(&match?(%Ash.Resource.Interface{}, &1))
|> Enum.uniq_by(& &1.name)
|> Enum.reduce(dsl_state, &add_form_interface(&1, &2, reference.resource))
end)
|> then(&{:ok, &1})
end
end
# sobelow_skip ["DOS.BinToAtom"]
defp add_form_interface(interface, dsl_state, resource, resource? \\ false) do
name = :"form_to_#{interface.name}"
action =
if resource? do
Ash.Resource.Info.action(dsl_state, interface.action || interface.name)
else
Ash.Resource.Info.action(resource, interface.action || interface.name)
end
form = AshPhoenix.Info.form(dsl_state, interface.name)
args = (form && form.args) || []
arg_vars_function =
Enum.map(args, fn
{:optional, key} ->
default = Ash.CodeInterface.default_value(resource, action, key)
{:\\, [], [{key, [], Elixir}, default]}
key ->
{key, [], Elixir}
end)
arg_names =
Enum.map(args, fn
{:optional, name} ->
name
name ->
name
end)
delete = Enum.flat_map(arg_names, &[&1, to_string(&1)])
{private_args, params} =
Enum.split_with(arg_names, fn arg ->
Enum.any?(action.arguments, &(&1.name == arg && !&1.public?))
end)
merge_params = {:%{}, [], Enum.map(params, &{to_string(&1), {&1, [], Elixir}})}
private_args_merge = {:%{}, [], Enum.map(private_args, &{&1, {&1, [], Elixir}})}
cond do
!action ->
dsl_state
action.type in [:update, :destroy] and interface.require_reference? ->
define =
quote do
@doc """
#{unquote(action.description) || "Creates a form for the #{unquote(action.name)} action on #{unquote(inspect(resource))}."}
## Options
#{Spark.Options.docs(AshPhoenix.Form.for_opts())}
Any *additional* options will be passed to the underlying call to build the source, i.e
`Ash.ActionInput.for_action/4`, or `Ash.Changeset.for_*`. This means you can set things
like the tenant/actor. These will be retained, and provided again when
`Form.submit/3` is called.
## Nested Form Options
#{Spark.Options.docs(AshPhoenix.Form.nested_form_opts())}
"""
|> Ash.CodeInterface.trim_double_newlines()
def unquote(name)(record, unquote_splicing(arg_vars_function), form_opts \\ []) do
form_opts =
form_opts
|> unquote(__MODULE__).merge_and_drop_params(
unquote(merge_params),
unquote(delete)
)
|> unquote(__MODULE__).set_private_arguments(unquote(private_args_merge))
AshPhoenix.Form.for_action(record, unquote(action.name), form_opts)
end
end
Spark.Dsl.Transformer.eval(dsl_state, [], define)
true ->
define =
quote do
@doc """
#{unquote(action.description) || "Creates a form for the #{unquote(action.name)} action on #{unquote(inspect(resource))}."}
## Options
#{Spark.Options.docs(AshPhoenix.Form.for_opts())}
Any *additional* options will be passed to the underlying call to build the source, i.e
`Ash.ActionInput.for_action/4`, or `Ash.Changeset.for_*`. This means you can set things
like the tenant/actor. These will be retained, and provided again when
`Form.submit/3` is called.
## Nested Form Options
#{Spark.Options.docs(AshPhoenix.Form.nested_form_opts())}
"""
|> Ash.CodeInterface.trim_double_newlines()
def unquote(name)(unquote_splicing(arg_vars_function), form_opts \\ []) do
form_opts =
form_opts
|> unquote(__MODULE__).merge_and_drop_params(
unquote(merge_params),
unquote(delete)
)
|> unquote(__MODULE__).set_private_arguments(unquote(private_args_merge))
AshPhoenix.Form.for_action(unquote(resource), unquote(action.name), form_opts)
|> Map.put(:params, unquote(merge_params))
|> Map.put(:raw_params, unquote(merge_params))
end
end
Spark.Dsl.Transformer.eval(dsl_state, [], define)
end
end
@doc false
def merge_and_drop_params(opts, merge_params, delete)
when merge_params == %{} and delete == [] do
opts
end
def merge_and_drop_params(opts, merge_params, delete) do
opts
|> Keyword.update(:params, merge_params, fn existing_params ->
existing_params
|> Kernel.||(%{})
|> Map.delete(delete)
|> Map.merge(merge_params)
end)
|> Keyword.update(
:transform_params,
fn _form, params, _ ->
params
|> Map.drop(delete)
|> Map.merge(merge_params)
end,
fn existing ->
existing =
existing ||
fn _, params, _ ->
params
end
fn form, params, type ->
params =
params
|> Map.drop(delete)
|> Map.merge(merge_params)
if is_function(existing, 2) do
existing.(params, type)
else
existing.(form, params, type)
end
end
end
)
end
@doc false
def set_private_arguments(opts, empty) when empty == %{} do
opts
end
def set_private_arguments(opts, private_args_merge) do
Keyword.update(
opts,
:private_arguments,
private_args_merge,
&Map.merge(&1 || %{}, private_args_merge)
)
end
end