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(chore): add support for using PaperTrail.Multi directly #140

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Apr 24, 2021
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(chore): add support for using PaperTrail.Multi directly #140

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48 changes: 38 additions & 10 deletions lib/paper_trail/multi.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -86,8 +86,20 @@ defmodule PaperTrail.Multi do
def update(
%Ecto.Multi{} = multi,
changeset,
options \\ [origin: nil, meta: nil, originator: nil, prefix: nil]
options \\ [
origin: nil,
meta: nil,
originator: nil,
prefix: nil,
model_key: :model,
version_key: :version,
ecto_options: []
]
) do
model_key = options[:model_key] || :model
version_key = options[:version_key] || :version
ecto_options = options[:ecto_options] || []

case RepoClient.strict_mode() do
true ->
multi
Expand All @@ -102,11 +114,11 @@ defmodule PaperTrail.Multi do
target_version = make_version_struct(%{event: "update"}, target_changeset, options)
repo.insert(target_version)
end)
|> Ecto.Multi.run(:model, fn repo, %{initial_version: initial_version} ->
|> Ecto.Multi.run(model_key, fn repo, %{initial_version: initial_version} ->
updated_changeset = changeset |> change(%{current_version_id: initial_version.id})
repo.update(updated_changeset, Keyword.take(options, [:returning]))
end)
|> Ecto.Multi.run(:version, fn repo, %{initial_version: initial_version} ->
|> Ecto.Multi.run(version_key, fn repo, %{initial_version: initial_version} ->
new_item_changes =
initial_version.item_changes
|> Map.merge(%{
Expand All @@ -118,8 +130,12 @@ defmodule PaperTrail.Multi do

_ ->
multi
|> Ecto.Multi.update(:model, changeset, Keyword.take(options, [:returning]))
|> Ecto.Multi.run(:version, fn repo, %{model: _model} ->
|> Ecto.Multi.update(
model_key,
changeset,
ecto_options ++ Keyword.take(options, [:returning])
)
|> Ecto.Multi.run(version_key, fn repo, %{^model_key => _model} ->
version = make_version_struct(%{event: "update"}, changeset, options)
repo.insert(version)
end)
Expand All @@ -129,11 +145,23 @@ defmodule PaperTrail.Multi do
def delete(
%Ecto.Multi{} = multi,
struct,
options \\ [origin: nil, meta: nil, originator: nil, prefix: nil]
options \\ [
origin: nil,
meta: nil,
originator: nil,
prefix: nil,
model_key: :model,
version_key: :version,
ecto_options: []
]
) do
model_key = options[:model_key] || :model
version_key = options[:version_key] || :version
ecto_options = options[:ecto_options] || []

multi
|> Ecto.Multi.delete(:model, struct, options)
|> Ecto.Multi.run(:version, fn repo, %{} ->
|> Ecto.Multi.delete(model_key, struct, ecto_options)
|> Ecto.Multi.run(version_key, fn repo, %{} ->
version = make_version_struct(%{event: "delete"}, struct, options)
repo.insert(version, options)
end)
Expand All @@ -147,7 +175,7 @@ defmodule PaperTrail.Multi do
case RepoClient.strict_mode() do
true ->
case transaction do
{:error, :model, changeset, %{}} ->
{:error, _, changeset, %{}} ->
filtered_changes =
Map.drop(changeset.changes, [:current_version_id, :first_version_id])

Expand All @@ -159,7 +187,7 @@ defmodule PaperTrail.Multi do

_ ->
case transaction do
{:error, :model, changeset, %{}} -> {:error, Map.merge(changeset, %{repo: repo})}
{:error, _, changeset, %{}} -> {:error, Map.merge(changeset, %{repo: repo})}
_ -> transaction
end
end
Expand Down