X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fpleroma%2Fpagination.ex;h=33e45a0eb45b8b83a3a00fae90f22dd562c94ed1;hb=77ed5fc67453f1030de39ce224b48f1846399397;hp=6321c26007582d47c539297921ce5505e2a12a90;hpb=88f7cf51d43181b27db5ff1807d3e706fa336bac;p=akkoma
diff --git a/lib/pleroma/pagination.ex b/lib/pleroma/pagination.ex
index 6321c2600..33e45a0eb 100644
--- a/lib/pleroma/pagination.ex
+++ b/lib/pleroma/pagination.ex
@@ -1,5 +1,5 @@
# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors
+# Copyright © 2017-2021 Pleroma Authors
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Pagination do
@@ -12,19 +12,23 @@ defmodule Pleroma.Pagination do
alias Pleroma.Repo
+ @type type :: :keyset | :offset
+
@default_limit 20
+ @max_limit 40
@page_keys ["max_id", "min_id", "limit", "since_id", "order"]
def page_keys, do: @page_keys
+ @spec fetch_paginated(Ecto.Query.t(), map(), type(), atom() | nil) :: [Ecto.Schema.t()]
def fetch_paginated(query, params, type \\ :keyset, table_binding \\ nil)
- def fetch_paginated(query, %{"total" => true} = params, :keyset, table_binding) do
+ def fetch_paginated(query, %{total: true} = params, :keyset, table_binding) do
total = Repo.aggregate(query, :count, :id)
%{
total: total,
- items: fetch_paginated(query, Map.drop(params, ["total"]), :keyset, table_binding)
+ items: fetch_paginated(query, Map.drop(params, [:total]), :keyset, table_binding)
}
end
@@ -37,12 +41,15 @@ defmodule Pleroma.Pagination do
|> enforce_order(options)
end
- def fetch_paginated(query, %{"total" => true} = params, :offset, table_binding) do
- total = Repo.aggregate(query, :count, :id)
+ def fetch_paginated(query, %{total: true} = params, :offset, table_binding) do
+ total =
+ query
+ |> Ecto.Query.exclude(:left_join)
+ |> Repo.aggregate(:count, :id)
%{
total: total,
- items: fetch_paginated(query, Map.drop(params, ["total"]), :offset, table_binding)
+ items: fetch_paginated(query, Map.drop(params, [:total]), :offset, table_binding)
}
end
@@ -54,8 +61,15 @@ defmodule Pleroma.Pagination do
|> Repo.all()
end
+ @spec paginate(Ecto.Query.t(), map(), type(), atom() | nil) :: [Ecto.Schema.t()]
def paginate(query, options, method \\ :keyset, table_binding \\ nil)
+ def paginate(list, options, _method, _table_binding) when is_list(list) do
+ offset = options[:offset] || 0
+ limit = options[:limit] || 0
+ Enum.slice(list, offset, limit)
+ end
+
def paginate(query, options, :keyset, table_binding) do
query
|> restrict(:min_id, options, table_binding)
@@ -79,15 +93,10 @@ defmodule Pleroma.Pagination do
max_id: :string,
offset: :integer,
limit: :integer,
+ skip_extra_order: :boolean,
skip_order: :boolean
}
- params =
- Enum.reduce(params, %{}, fn
- {key, _value}, acc when is_atom(key) -> Map.drop(acc, [key])
- {key, value}, acc -> Map.put(acc, key, value)
- end)
-
changeset = cast({%{}, param_types}, params, Map.keys(param_types))
changeset.changes
end
@@ -106,6 +115,8 @@ defmodule Pleroma.Pagination do
defp restrict(query, :order, %{skip_order: true}, _), do: query
+ defp restrict(%{order_bys: [_ | _]} = query, :order, %{skip_extra_order: true}, _), do: query
+
defp restrict(query, :order, %{min_id: _}, table_binding) do
order_by(
query,
@@ -127,7 +138,11 @@ defmodule Pleroma.Pagination do
end
defp restrict(query, :limit, options, _table_binding) do
- limit = Map.get(options, :limit, @default_limit)
+ limit =
+ case Map.get(options, :limit, @default_limit) do
+ limit when limit < @max_limit -> limit
+ _ -> @max_limit
+ end
query
|> limit(^limit)