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57 lines
1.5 KiB
Elixir
57 lines
1.5 KiB
Elixir
defmodule PhilomenaWeb.CommentLoader do
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alias Philomena.Comments.Comment
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alias Philomena.Repo
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import Ecto.Query
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def load_comments(conn, image) do
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pref = load_direction(conn.assigns.current_user)
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Comment
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|> where(image_id: ^image.id)
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|> order_by([{^pref, :created_at}])
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|> preload([:image, :deleted_by, user: [awards: :badge]])
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|> Repo.paginate(conn.assigns.comment_scrivener)
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end
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def find_page(conn, image, comment_id) do
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user = conn.assigns.current_user
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comment =
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Comment
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|> where(image_id: ^image.id)
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|> where(id: ^comment_id)
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|> Repo.one!()
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offset =
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Comment
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|> where(image_id: ^image.id)
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|> filter_direction(comment.created_at, user)
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|> Repo.aggregate(:count, :id)
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page_size = conn.assigns.comment_scrivener[:page_size]
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# Pagination starts at page 1
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div(offset, page_size) + 1
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end
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def last_page(conn, image) do
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offset =
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Comment
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|> where(image_id: ^image.id)
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|> Repo.aggregate(:count, :id)
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page_size = conn.assigns.comment_scrivener[:page_size]
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# Pagination starts at page 1
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div(offset, page_size) + 1
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end
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defp load_direction(%{comments_newest_first: false}), do: :asc
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defp load_direction(_user), do: :desc
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defp filter_direction(query, time, %{comments_newest_first: false}),
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do: where(query, [c], c.created_at <= ^time)
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defp filter_direction(query, time, _user),
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do: where(query, [c], c.created_at >= ^time)
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end
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