[#1335] Reorganized `users.mutes` as relation to UserMute entity.

lib/pleroma/user.ex

@@ -23,6 +23,7 @@ defmodule Pleroma.User do
   alias Pleroma.RepoStreamer
   alias Pleroma.User
   alias Pleroma.UserBlock
+  alias Pleroma.UserMute
   alias Pleroma.Web
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Utils
@@ -119,11 +120,17 @@ defmodule Pleroma.User do
     has_many(:notifications, Notification)
     has_many(:registrations, Registration)
     has_many(:deliveries, Delivery)
+
     has_many(:blocker_blocks, UserBlock, foreign_key: :blocker_id)
     has_many(:blockee_blocks, UserBlock, foreign_key: :blockee_id)
     has_many(:blocked_users, through: [:blocker_blocks, :blockee])
     has_many(:blocker_users, through: [:blockee_blocks, :blocker])
 
+    has_many(:muter_mutes, UserMute, foreign_key: :muter_id)
+    has_many(:mutee_mutes, UserMute, foreign_key: :mutee_id)
+    has_many(:muted_users, through: [:muter_mutes, :mutee])
+    has_many(:muter_users, through: [:mutee_mutes, :muter])
+
     field(:info, :map, default: %{})
 
     # `:blocks` is deprecated (replaced with `blocked_users` relation)
@@ -968,12 +975,12 @@ def get_recipients_from_activity(%Activity{recipients: to}) do
   end
 
   @spec mute(User.t(), User.t(), boolean()) :: {:ok, User.t()} | {:error, String.t()}
-  def mute(muter, %User{ap_id: ap_id}, notifications? \\ true) do
+  def mute(muter, %User{} = mutee, notifications? \\ true) do
-    add_to_mutes(muter, ap_id, notifications?)
+    add_to_mutes(muter, mutee, notifications?)
   end
 
-  def unmute(muter, %{ap_id: ap_id}) do
+  def unmute(muter, %User{} = mutee) do
-    remove_from_mutes(muter, ap_id)
+    remove_from_mutes(muter, mutee)
   end
 
   def subscribe(subscriber, %{ap_id: ap_id}) do
@@ -1041,7 +1048,11 @@ def unblock(blocker, %{ap_id: ap_id}) do
   end
 
   def mutes?(nil, _), do: false
-  def mutes?(user, %{ap_id: ap_id}), do: Enum.member?(user.mutes, ap_id)
+  def mutes?(%User{} = user, %User{} = target), do: mutes_user?(user, target)
+
+  def mutes_user?(%User{} = user, %User{} = target) do
+    UserMute.exists?(user, target)
+  end
 
   @spec muted_notifications?(User.t() | nil, User.t() | map()) :: boolean()
   def muted_notifications?(nil, _), do: false
@@ -1049,17 +1060,17 @@ def muted_notifications?(nil, _), do: false
   def muted_notifications?(user, %{ap_id: ap_id}),
     do: Enum.member?(user.muted_notifications, ap_id)
 
-  def blocks?(%User{} = user, %User{} = target) do
-    blocks_ap_id?(user, target) || blocks_domain?(user, target)
-  end
-
   def blocks?(nil, _), do: false
 
-  def blocks_ap_id?(%User{} = user, %User{} = target) do
+  def blocks?(%User{} = user, %User{} = target) do
+    blocks_user?(user, target) || blocks_domain?(user, target)
+  end
+
+  def blocks_user?(%User{} = user, %User{} = target) do
     UserBlock.exists?(user, target)
   end
 
-  def blocks_ap_id?(_, _), do: false
+  def blocks_user?(_, _), do: false
 
   def blocks_domain?(%User{} = user, %User{} = target) do
     domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.domain_blocks)
@@ -1077,7 +1088,16 @@ def subscribed_to?(user, %{ap_id: ap_id}) do
 
   @spec muted_users(User.t()) :: [User.t()]
   def muted_users(user) do
-    User.Query.build(%{ap_id: user.mutes, deactivated: false})
+    user
+    |> assoc(:muted_users)
+    |> restrict_deactivated()
+    |> Repo.all()
+  end
+
+  def muted_ap_ids(user) do
+    user
+    |> assoc(:muted_users)
+    |> select([u], u.ap_id)
     |> Repo.all()
   end
 
@@ -1096,6 +1116,35 @@ def blocked_ap_ids(user) do
     |> Repo.all()
   end
 
+  defp related_ap_ids_sql(join_table, source_column, target_column) do
+    "(SELECT array_agg(u.ap_id) FROM users as u " <>
+      "INNER JOIN #{join_table} AS join_table " <>
+      "ON join_table.#{source_column} = $1 " <>
+      "WHERE u.id = join_table.#{target_column})"
+  end
+
+  @related_ap_ids_sql_params %{
+    blocked_users: ["user_blocks", "blocker_id", "blockee_id"],
+    muted_users: ["user_mutes", "muter_id", "mutee_id"]
+  }
+
+  def related_ap_ids(user, relations) when is_list(relations) do
+    query =
+      relations
+      |> Enum.map(fn r -> @related_ap_ids_sql_params[r] end)
+      |> Enum.filter(& &1)
+      |> Enum.map(fn [join_table, source_column, target_column] ->
+        related_ap_ids_sql(join_table, source_column, target_column)
+      end)
+      |> Enum.join(", ")
+
+    with {:ok, %{rows: [ap_ids_arrays]}} <-
+           Repo.query("SELECT #{query}", [FlakeId.from_string(user.id)]) do
+      ap_ids_arrays = Enum.map(ap_ids_arrays, &(&1 || []))
+      {:ok, ap_ids_arrays}
+    end
+  end
+
   @spec subscribers(User.t()) :: [User.t()]
   def subscribers(user) do
     User.Query.build(%{ap_id: user.subscribers, deactivated: false})
@@ -1877,32 +1926,27 @@ defp remove_from_block(%User{} = user, %User{} = blocked) do
     UserBlock.delete(user, blocked)
   end
 
-  defp set_mutes(user, mutes) do
+  defp add_to_mutes(%User{} = user, %User{ap_id: ap_id} = muted_user, notifications?) do
-    params = %{mutes: mutes}
+    with {:ok, user_mute} <- UserMute.create(user, muted_user),
-
+         {:ok, _user} <-
-    user
-    |> cast(params, [:mutes])
-    |> validate_required([:mutes])
-    |> update_and_set_cache()
-  end
-
-  def add_to_mutes(user, muted, notifications?) do
-    with {:ok, user} <- set_mutes(user, Enum.uniq([muted | user.mutes])) do
            set_notification_mutes(
              user,
-        Enum.uniq([muted | user.muted_notifications]),
+             Enum.uniq([ap_id | user.muted_notifications]),
              notifications?
-      )
+           ) do
+      {:ok, user_mute}
     end
   end
 
-  def remove_from_mutes(user, muted) do
+  defp remove_from_mutes(user, %User{ap_id: ap_id} = muted_user) do
-    with {:ok, user} <- set_mutes(user, List.delete(user.mutes, muted)) do
+    with {:ok, user_mute} <- UserMute.delete(user, muted_user),
+         {:ok, _user} <-
            set_notification_mutes(
              user,
-        List.delete(user.muted_notifications, muted),
+             List.delete(user.muted_notifications, ap_id),
              true
-      )
+           ) do
+      {:ok, user_mute}
     end
   end
 

lib/pleroma/user_mute.ex

@@ -0,0 +1,71 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.UserMute do
+  use Ecto.Schema
+
+  import Ecto.Changeset
+  import Ecto.Query
+
+  alias Pleroma.Repo
+  alias Pleroma.User
+  alias Pleroma.UserMute
+
+  schema "user_mutes" do
+    belongs_to(:muter, User, type: FlakeId.Ecto.CompatType)
+    belongs_to(:mutee, User, type: FlakeId.Ecto.CompatType)
+
+    timestamps(updated_at: false)
+  end
+
+  def changeset(%UserMute{} = user_mute, params \\ %{}) do
+    user_mute
+    |> cast(params, [:muter_id, :mutee_id])
+    |> validate_required([:muter_id, :mutee_id])
+    |> unique_constraint(:mutee_id, name: :user_mutes_muter_id_mutee_id_index)
+    |> validate_not_self_mute()
+  end
+
+  def exists?(%User{} = muter, %User{} = mutee) do
+    UserMute
+    |> where(muter_id: ^muter.id, mutee_id: ^mutee.id)
+    |> Repo.exists?()
+  end
+
+  def create(%User{} = muter, %User{} = mutee) do
+    %UserMute{}
+    |> changeset(%{muter_id: muter.id, mutee_id: mutee.id})
+    |> Repo.insert(
+      on_conflict: :replace_all_except_primary_key,
+      conflict_target: [:muter_id, :mutee_id]
+    )
+  end
+
+  def delete(%User{} = muter, %User{} = mutee) do
+    attrs = %{muter_id: muter.id, mutee_id: mutee.id}
+
+    case Repo.get_by(UserMute, attrs) do
+      %UserMute{} = existing_record -> Repo.delete(existing_record)
+      nil -> {:ok, nil}
+    end
+  end
+
+  defp validate_not_self_mute(%Ecto.Changeset{} = changeset) do
+    changeset
+    |> validate_change(:mutee_id, fn _, mutee_id ->
+      if mutee_id == get_field(changeset, :muter_id) do
+        [mutee_id: "can't be equal to muter_id"]
+      else
+        []
+      end
+    end)
+    |> validate_change(:muter_id, fn _, muter_id ->
+      if muter_id == get_field(changeset, :mutee_id) do
+        [muter_id: "can't be equal to mutee_id"]
+      else
+        []
+      end
+    end)
+  end
+end

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -858,7 +858,7 @@ defp restrict_reblogs(query, _), do: query
   defp restrict_muted(query, %{"with_muted" => val}) when val in [true, "true", "1"], do: query
 
   defp restrict_muted(query, %{"muting_user" => %User{} = user} = opts) do
-    mutes = user.mutes
+    mutes = opts["muted_ap_ids"] || User.muted_ap_ids(user)
 
     query =
       from([activity] in query,
@@ -875,8 +875,8 @@ defp restrict_muted(query, %{"muting_user" => %User{} = user} = opts) do
 
   defp restrict_muted(query, _), do: query
 
-  defp restrict_blocked(query, %{"blocking_user" => %User{} = user}) do
+  defp restrict_blocked(query, %{"blocking_user" => %User{} = user} = opts) do
-    blocked_ap_ids = User.blocked_ap_ids(user)
+    blocked_ap_ids = opts["blocked_ap_ids"] || User.blocked_ap_ids(user)
     domain_blocks = user.domain_blocks || []
 
     query =

lib/pleroma/web/mastodon_api/controllers/account_controller.ex

@@ -323,7 +323,9 @@ def unfollow(%{assigns: %{user: follower, account: followed}} = conn, _params) d
   def mute(%{assigns: %{user: muter, account: muted}} = conn, params) do
     notifications? = params |> Map.get("notifications", true) |> truthy_param?()
 
-    with {:ok, muter} <- User.mute(muter, muted, notifications?) do
+    with {:ok, _user_mute} <- User.mute(muter, muted, notifications?) do
+      # TODO: remove `muter` refresh once `muted_notifications` field is deprecated
+      muter = User.get_cached_by_id(muter.id)
       render(conn, "relationship.json", user: muter, target: muted)
     else
       {:error, message} -> json_response(conn, :forbidden, %{error: message})
@@ -332,7 +334,9 @@ def mute(%{assigns: %{user: muter, account: muted}} = conn, params) do
 
   @doc "POST /api/v1/accounts/:id/unmute"
   def unmute(%{assigns: %{user: muter, account: muted}} = conn, _params) do
-    with {:ok, muter} <- User.unmute(muter, muted) do
+    with {:ok, _user_mute} <- User.unmute(muter, muted) do
+      # TODO: remove `muter` refresh once `muted_notifications` field is deprecated
+      muter = User.get_cached_by_id(muter.id)
       render(conn, "relationship.json", user: muter, target: muted)
     else
       {:error, message} -> json_response(conn, :forbidden, %{error: message})

lib/pleroma/web/mastodon_api/views/account_view.ex

@@ -50,8 +50,8 @@ def render("relationship.json", %{user: %User{} = user, target: %User{} = target
       id: to_string(target.id),
       following: User.following?(user, target),
       followed_by: User.following?(target, user),
-      blocking: User.blocks_ap_id?(user, target),
+      blocking: User.blocks_user?(user, target),
-      blocked_by: User.blocks_ap_id?(target, user),
+      blocked_by: User.blocks_user?(target, user),
       muting: User.mutes?(user, target),
       muting_notifications: User.muted_notifications?(user, target),
       subscribing: User.subscribed_to?(user, target),

lib/pleroma/web/streamer/worker.ex

@@ -129,8 +129,7 @@ defp do_stream(%{topic: topic, item: item}) do
   end
 
   defp should_send?(%User{} = user, %Activity{} = item) do
-    blocks = User.blocked_ap_ids(user)
+    {:ok, [blocks, mutes]} = User.related_ap_ids(user, [:blocked_users, :muted_users])
-    mutes = user.mutes || []
     reblog_mutes = user.muted_reblogs || []
     recipient_blocks = MapSet.new(blocks ++ mutes)
     recipients = MapSet.new(item.recipients)

priv/repo/migrations/20191108173911_data_migration_populate_user_blocks.exs

@@ -30,9 +30,8 @@ def up do
 
         for blockee_ap_id <- blockee_ap_ids do
           blockee_id = blockee_id_by_ap_id[blockee_ap_id]
-          blockee_uuid = blockee_id && Ecto.UUID.cast!(blockee_id)
 
-          with {:ok, blockee_uuid} <- Ecto.UUID.cast(blockee_id) do
+          with {:ok, blockee_uuid} <- blockee_id && Ecto.UUID.cast(blockee_id) do
             execute(
               "INSERT INTO user_blocks(blocker_id, blockee_id, inserted_at) " <>
                 "VALUES('#{blocker_uuid}'::uuid, '#{blockee_uuid}'::uuid, now()) " <>

priv/repo/migrations/20191112151559_create_user_mutes.exs

@@ -0,0 +1,14 @@
+defmodule Pleroma.Repo.Migrations.CreateUserMutes do
+  use Ecto.Migration
+
+  def change do
+    create_if_not_exists table(:user_mutes) do
+      add(:muter_id, references(:users, type: :uuid, on_delete: :delete_all))
+      add(:mutee_id, references(:users, type: :uuid, on_delete: :delete_all))
+
+      timestamps(updated_at: false)
+    end
+
+    create_if_not_exists(unique_index(:user_mutes, [:muter_id, :mutee_id]))
+  end
+end

priv/repo/migrations/20191112151614_data_migration_populate_user_mutes.exs

@@ -0,0 +1,48 @@
+defmodule Pleroma.Repo.Migrations.DataMigrationPopulateUserMutes do
+  use Ecto.Migration
+
+  alias Ecto.Adapters.SQL
+  alias Pleroma.Repo
+
+  require Logger
+
+  def up do
+    {:ok, %{rows: mute_rows}} = SQL.query(Repo, "SELECT id, mutes FROM users WHERE mutes != '{}'")
+
+    mutee_ap_ids =
+      Enum.flat_map(
+        mute_rows,
+        fn [_, ap_ids] -> ap_ids end
+      )
+      |> Enum.uniq()
+
+    # Selecting ids of all mutees at once in order to reduce the number of SELECT queries
+    {:ok, %{rows: mutee_ap_id_id}} =
+      SQL.query(Repo, "SELECT ap_id, id FROM users WHERE ap_id = ANY($1)", [mutee_ap_ids])
+
+    mutee_id_by_ap_id = Enum.into(mutee_ap_id_id, %{}, fn [k, v] -> {k, v} end)
+
+    Enum.each(
+      mute_rows,
+      fn [muter_id, mutee_ap_ids] ->
+        muter_uuid = Ecto.UUID.cast!(muter_id)
+
+        for mutee_ap_id <- mutee_ap_ids do
+          mutee_id = mutee_id_by_ap_id[mutee_ap_id]
+
+          with {:ok, mutee_uuid} <- mutee_id && Ecto.UUID.cast(mutee_id) do
+            execute(
+              "INSERT INTO user_mutes(muter_id, mutee_id, inserted_at) " <>
+                "VALUES('#{muter_uuid}'::uuid, '#{mutee_uuid}'::uuid, now()) " <>
+                "ON CONFLICT (muter_id, mutee_id) DO NOTHING"
+            )
+          else
+            _ -> Logger.warn("Missing reference: (#{muter_uuid}, #{mutee_id})")
+          end
+        end
+      end
+    )
+  end
+
+  def down, do: :noop
+end

test/notification_test.exs

@@ -112,7 +112,7 @@ test "notification created if user is muted without notifications" do
       muter = insert(:user)
       muted = insert(:user)
 
-      {:ok, muter} = User.mute(muter, muted, false)
+      {:ok, _user_mute} = User.mute(muter, muted, false)
 
       {:ok, activity} = CommonAPI.post(muted, %{"status" => "Hi @#{muter.nickname}"})
 
@@ -636,7 +636,7 @@ test "notifications are deleted if a remote user is deleted" do
     test "it returns notifications for muted user without notifications" do
       user = insert(:user)
       muted = insert(:user)
-      {:ok, user} = User.mute(user, muted, false)
+      {:ok, _user_mute} = User.mute(user, muted, false)
 
       {:ok, _activity} = CommonAPI.post(muted, %{"status" => "hey @#{user.nickname}"})
 
@@ -646,7 +646,10 @@ test "it returns notifications for muted user without notifications" do
     test "it doesn't return notifications for muted user with notifications" do
       user = insert(:user)
       muted = insert(:user)
-      {:ok, user} = User.mute(user, muted)
+      {:ok, _user_mute} = User.mute(user, muted)
+
+      # Refreshing to reflect embedded ap id relation fields (remove once removed)
+      user = refresh_record(user)
 
       {:ok, _activity} = CommonAPI.post(muted, %{"status" => "hey @#{user.nickname}"})
 
@@ -686,7 +689,7 @@ test "it doesn't return notifications for muted thread" do
     test "it returns notifications from a muted user when with_muted is set" do
       user = insert(:user)
       muted = insert(:user)
-      {:ok, user} = User.mute(user, muted)
+      {:ok, _user_mute} = User.mute(user, muted)
 
       {:ok, _activity} = CommonAPI.post(muted, %{"status" => "hey @#{user.nickname}"})
 

test/user_test.exs

@@ -673,7 +673,10 @@ test "it mutes people" do
       refute User.mutes?(user, muted_user)
       refute User.muted_notifications?(user, muted_user)
 
-      {:ok, user} = User.mute(user, muted_user)
+      {:ok, _user_mute} = User.mute(user, muted_user)
+
+      # Refreshing to reflect embedded ap id relation fields (remove once removed)
+      user = refresh_record(user)
 
       assert User.mutes?(user, muted_user)
       assert User.muted_notifications?(user, muted_user)
@@ -683,8 +686,8 @@ test "it unmutes users" do
       user = insert(:user)
       muted_user = insert(:user)
 
-      {:ok, user} = User.mute(user, muted_user)
+      {:ok, _user_mute} = User.mute(user, muted_user)
-      {:ok, user} = User.unmute(user, muted_user)
+      {:ok, _user_mute} = User.unmute(user, muted_user)
 
       refute User.mutes?(user, muted_user)
       refute User.muted_notifications?(user, muted_user)
@@ -697,7 +700,7 @@ test "it mutes user without notifications" do
       refute User.mutes?(user, muted_user)
       refute User.muted_notifications?(user, muted_user)
 
-      {:ok, user} = User.mute(user, muted_user, false)
+      {:ok, _user_mute} = User.mute(user, muted_user, false)
 
       assert User.mutes?(user, muted_user)
       refute User.muted_notifications?(user, muted_user)

test/web/activity_pub/activity_pub_test.exs

@@ -611,7 +611,9 @@ test "doesn't return muted activities" do
     activity_three = insert(:note_activity)
     user = insert(:user)
     booster = insert(:user)
-    {:ok, user} = User.mute(user, %User{ap_id: activity_one.data["actor"]})
+
+    activity_one_actor = User.get_by_ap_id(activity_one.data["actor"])
+    {:ok, _user_mute} = User.mute(user, activity_one_actor)
 
     activities =
       ActivityPub.fetch_activities([], %{"muting_user" => user, "skip_preload" => true})
@@ -632,7 +634,7 @@ test "doesn't return muted activities" do
     assert Enum.member?(activities, activity_three)
     assert Enum.member?(activities, activity_one)
 
-    {:ok, user} = User.unmute(user, %User{ap_id: activity_one.data["actor"]})
+    {:ok, _user_mute} = User.unmute(user, activity_one_actor)
 
     activities =
       ActivityPub.fetch_activities([], %{"muting_user" => user, "skip_preload" => true})
@@ -641,7 +643,8 @@ test "doesn't return muted activities" do
     assert Enum.member?(activities, activity_three)
     assert Enum.member?(activities, activity_one)
 
-    {:ok, user} = User.mute(user, %User{ap_id: activity_three.data["actor"]})
+    activity_three_actor = User.get_by_ap_id(activity_three.data["actor"])
+    {:ok, _user_mute} = User.mute(user, activity_three_actor)
     {:ok, _announce, %{data: %{"id" => id}}} = CommonAPI.repeat(activity_three.id, booster)
     %Activity{} = boost_activity = Activity.get_create_by_object_ap_id(id)
     activity_three = Activity.get_by_id(activity_three.id)

test/web/mastodon_api/controllers/account_controller_test.exs

@@ -868,7 +868,7 @@ test "getting a list of mutes", %{conn: conn} do
     user = insert(:user)
     other_user = insert(:user)
 
-    {:ok, user} = User.mute(user, other_user)
+    {:ok, _user_mute} = User.mute(user, other_user)
 
     conn =
       conn

test/web/mastodon_api/controllers/notification_controller_test.exs

@@ -289,7 +289,10 @@ test "doesn't see notifications after muting user with notifications", %{conn: c
 
     assert length(json_response(conn, 200)) == 1
 
-    {:ok, user} = User.mute(user, user2)
+    {:ok, _user_mute} = User.mute(user, user2)
+
+    # Refreshing to reflect embedded ap id relation fields (remove once removed)
+    user = refresh_record(user)
 
     conn = assign(build_conn(), :user, user)
     conn = get(conn, "/api/v1/notifications")
@@ -310,7 +313,7 @@ test "see notifications after muting user without notifications", %{conn: conn}
 
     assert length(json_response(conn, 200)) == 1
 
-    {:ok, user} = User.mute(user, user2, false)
+    {:ok, _user_mute} = User.mute(user, user2, false)
 
     conn = assign(build_conn(), :user, user)
     conn = get(conn, "/api/v1/notifications")
@@ -333,7 +336,7 @@ test "see notifications after muting user with notifications and with_muted para
 
     assert length(json_response(conn, 200)) == 1
 
-    {:ok, user} = User.mute(user, user2)
+    {:ok, _user_mute} = User.mute(user, user2)
 
     conn = assign(build_conn(), :user, user)
     conn = get(conn, "/api/v1/notifications", %{"with_muted" => "true"})

test/web/mastodon_api/views/account_view_test.exs

@@ -191,9 +191,12 @@ test "represent a relationship for the following and followed user" do
       {:ok, user} = User.follow(user, other_user)
       {:ok, other_user} = User.follow(other_user, user)
       {:ok, other_user} = User.subscribe(user, other_user)
-      {:ok, user} = User.mute(user, other_user, true)
+      {:ok, _user_mute} = User.mute(user, other_user, true)
       {:ok, user} = CommonAPI.hide_reblogs(user, other_user)
 
+      # Refreshing to reflect embedded ap id relation fields (remove once removed)
+      user = refresh_record(user)
+
       expected = %{
         id: to_string(other_user.id),
         following: true,

test/web/mastodon_api/views/status_view_test.exs

@@ -183,7 +183,7 @@ test "tells if the message is muted for some reason" do
     user = insert(:user)
     other_user = insert(:user)
 
-    {:ok, user} = User.mute(user, other_user)
+    {:ok, _user_mute} = User.mute(user, other_user)
 
     {:ok, activity} = CommonAPI.post(other_user, %{"status" => "test"})
     status = StatusView.render("show.json", %{activity: activity})
@@ -199,7 +199,7 @@ test "tells if the message is thread muted" do
     user = insert(:user)
     other_user = insert(:user)
 
-    {:ok, user} = User.mute(user, other_user)
+    {:ok, _user_mute} = User.mute(user, other_user)
 
     {:ok, activity} = CommonAPI.post(other_user, %{"status" => "test"})
     status = StatusView.render("show.json", %{activity: activity, for: user})