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WIP: Add ability to update image with existing data #26

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WIP: Add ability to update image with existing data #26

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5 changes: 5 additions & 0 deletions lib/waffle_ecto/schema.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,11 @@ defmodule Waffle.Ecto.Schema do
{field, upload = %{__struct__: Plug.Upload}}, fields ->
[{field, {upload, scope}} | fields]

# Allow update with data from schema
{field, data = %{file_name: filename}}, fields
when is_binary(filename) ->
[{field, {data, scope}} | fields]

# Allow casting binary data structs
{field, upload = %{filename: filename, binary: binary}}, fields
when is_binary(filename) and is_binary(binary) ->
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10 changes: 10 additions & 0 deletions test/schema_test.exs
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Expand Up @@ -63,6 +63,16 @@ defmodule WaffleTest.Ecto.Schema do
%{file_name: "file.png", updated_at: _} = cs.changes.avatar
end

test_with_mock "supports updating with already existing data", DummyDefinition,
store: fn {_, %TestUser{}} ->
{:ok, "file.png"}
end do
attrs = %{"avatar" => build_upload("/path/to/my/file.png")}
cs = TestUser.changeset(%TestUser{}, attrs)
assert {:ok, user} = Ecto.Changeset.apply_action(cs, :insert)
TestUser.changeset(user, %{"avatar" => user.avatar})
end

test_with_mock "cascades storage error into an error", DummyDefinition,
store: fn {%{__struct__: Plug.Upload, path: "/path/to/my/file.png", filename: "file.png"},
%TestUser{}} ->
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