Added Hashtag entity and objects-hashtags association with auto-sync with data.tag
on Object update.
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parent
ee221277b0
commit
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6 changed files with 143 additions and 9 deletions
58
lib/pleroma/hashtag.ex
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58
lib/pleroma/hashtag.ex
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@ -0,0 +1,58 @@
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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Hashtag do
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use Ecto.Schema
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import Ecto.Changeset
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alias Pleroma.Hashtag
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alias Pleroma.Repo
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@derive {Jason.Encoder, only: [:data]}
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schema "hashtags" do
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field(:name, :string)
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field(:data, :map, default: %{})
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many_to_many(:objects, Pleroma.Object, join_through: "hashtags_objects", on_replace: :delete)
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timestamps()
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end
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def get_by_name(name) do
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Repo.get_by(Hashtag, name: name)
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end
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def get_or_create_by_name(name) when is_bitstring(name) do
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with %Hashtag{} = hashtag <- get_by_name(name) do
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{:ok, hashtag}
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else
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_ ->
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%Hashtag{}
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|> changeset(%{name: name})
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|> Repo.insert()
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end
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end
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def get_or_create_by_names(names) when is_list(names) do
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Enum.reduce_while(names, {:ok, []}, fn name, {:ok, list} ->
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case get_or_create_by_name(name) do
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{:ok, %Hashtag{} = hashtag} ->
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{:cont, {:ok, list ++ [hashtag]}}
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error ->
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{:halt, error}
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end
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end)
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end
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def changeset(%Hashtag{} = struct, params) do
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struct
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|> cast(params, [:name, :data])
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|> update_change(:name, &String.downcase/1)
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|> validate_required([:name])
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|> unique_constraint(:name)
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end
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end
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@ -10,6 +10,7 @@ defmodule Pleroma.Object do
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alias Pleroma.Activity
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alias Pleroma.Config
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alias Pleroma.Hashtag
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alias Pleroma.Object
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alias Pleroma.Object.Fetcher
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alias Pleroma.ObjectTombstone
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@ -26,6 +27,8 @@ defmodule Pleroma.Object do
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schema "objects" do
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field(:data, :map)
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many_to_many(:hashtags, Hashtag, join_through: "hashtags_objects", on_replace: :delete)
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timestamps()
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end
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@ -53,17 +56,31 @@ def create(data) do
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end
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def change(struct, params \\ %{}) do
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changeset =
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struct
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|> cast(params, [:data])
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|> validate_required([:data])
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|> unique_constraint(:ap_id, name: :objects_unique_apid_index)
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struct
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|> cast(params, [:data])
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|> validate_required([:data])
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|> unique_constraint(:ap_id, name: :objects_unique_apid_index)
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|> maybe_handle_hashtags_change(struct)
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end
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if hashtags_changed?(struct, get_change(changeset, :data)) do
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# TODO: modify assoc once it's introduced
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changeset
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defp maybe_handle_hashtags_change(changeset, struct) do
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with data_hashtags_change = get_change(changeset, :data),
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true <- hashtags_changed?(struct, data_hashtags_change),
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{:ok, hashtag_records} <-
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data_hashtags_change
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|> object_data_hashtags()
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|> Hashtag.get_or_create_by_names() do
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put_assoc(changeset, :hashtags, hashtag_records)
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else
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changeset
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false ->
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changeset
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{:error, hashtag_changeset} ->
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failed_hashtag = get_field(hashtag_changeset, :name)
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validate_change(changeset, :data, fn _, _ ->
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[data: "error referencing hashtag: #{failed_hashtag}"]
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end)
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end
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end
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14
priv/repo/migrations/20201221202251_create_hashtags.exs
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14
priv/repo/migrations/20201221202251_create_hashtags.exs
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defmodule Pleroma.Repo.Migrations.CreateHashtags do
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use Ecto.Migration
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def change do
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create_if_not_exists table(:hashtags) do
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add(:name, :citext, null: false)
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add(:data, :map, default: %{})
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timestamps()
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end
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create_if_not_exists(unique_index(:hashtags, [:name]))
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end
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end
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@ -0,0 +1,13 @@
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defmodule Pleroma.Repo.Migrations.CreateHashtagsObjects do
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use Ecto.Migration
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def change do
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create_if_not_exists table(:hashtags_objects) do
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add(:hashtag_id, references(:hashtags), null: false)
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add(:object_id, references(:objects), null: false)
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end
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create_if_not_exists(unique_index(:hashtags_objects, [:hashtag_id, :object_id]))
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create_if_not_exists(index(:hashtags_objects, [:object_id]))
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end
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end
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@ -5,10 +5,13 @@
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defmodule Pleroma.ObjectTest do
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use Pleroma.DataCase
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use Oban.Testing, repo: Pleroma.Repo
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import ExUnit.CaptureLog
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import Pleroma.Factory
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import Tesla.Mock
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alias Pleroma.Activity
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alias Pleroma.Hashtag
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alias Pleroma.Object
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alias Pleroma.Repo
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alias Pleroma.Tests.ObanHelpers
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@ -406,4 +409,28 @@ test "preserves internal fields on refetch", %{mock_modified: mock_modified} do
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assert updated_object.data["like_count"] == 1
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end
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end
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describe ":hashtags association" do
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test "Hashtag records are created with Object record and updated on its change" do
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user = insert(:user)
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{:ok, %{object: object}} =
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CommonAPI.post(user, %{status: "some text #hashtag1 #hashtag2 ..."})
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assert [%Hashtag{name: "hashtag1"}, %Hashtag{name: "hashtag2"}] =
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Enum.sort_by(object.hashtags, & &1.name)
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{:ok, object} = Object.update_data(object, %{"tag" => []})
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assert [] = object.hashtags
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object = Object.get_by_id(object.id) |> Repo.preload(:hashtags)
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assert [] = object.hashtags
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{:ok, object} = Object.update_data(object, %{"tag" => ["abc", "def"]})
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assert [%Hashtag{name: "abc"}, %Hashtag{name: "def"}] =
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Enum.sort_by(object.hashtags, & &1.name)
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end
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end
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end
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@ -217,6 +217,11 @@ test "it fetches the appropriate tag-restricted posts" do
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tag_all: ["test", "reject"]
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})
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[fetch_one, fetch_two, fetch_three, fetch_four] =
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Enum.map([fetch_one, fetch_two, fetch_three, fetch_four], fn statuses ->
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Enum.map(statuses, fn s -> Repo.preload(s, object: :hashtags) end)
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end)
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assert fetch_one == [status_one, status_three]
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assert fetch_two == [status_one, status_two, status_three]
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assert fetch_three == [status_one, status_two]
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