add table component
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lib/lokal_web/components/table_component.ex
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87
lib/lokal_web/components/table_component.ex
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defmodule LokalWeb.Components.TableComponent do
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@moduledoc """
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Livecomponent that presents a resortable table
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It takes the following required assigns:
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- `:columns`: An array of maps containing the following keys
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- `:label`: A gettext'd or otherwise user-facing string label for the
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column. Can be nil
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- `:key`: A string key used for sorting
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- `:class`: Extra classes to be applied to the column element, if desired.
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Optional
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- `:sortable`: If false, will prevent the user from sorting with it.
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Optional
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- `:values`: An array of maps containing data for each row. Each map is
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string-keyed with the associated column key to the following values:
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- A single element, like string, integer or Phoenix.LiveView.Rendered
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object, like returned from the ~H sigil
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- A tuple, containing a custom value used for sorting, and the displayed
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content.
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"""
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use LokalWeb, :live_component
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alias Phoenix.LiveView.Socket
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@impl true
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@spec update(
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%{
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required(:columns) =>
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list(%{
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required(:label) => String.t() | nil,
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required(:key) => String.t() | nil,
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optional(:class) => String.t(),
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optional(:sortable) => false
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}),
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required(:rows) =>
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list(%{
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(key :: String.t()) => any() | {custom_sort_value :: String.t(), value :: any()}
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}),
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optional(any()) => any()
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},
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Socket.t()
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) :: {:ok, Socket.t()}
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def update(%{columns: columns, rows: rows} = assigns, socket) do
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initial_key = columns |> List.first() |> Map.get(:key)
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rows = rows |> Enum.sort_by(fn row -> row |> Map.get(initial_key) end, :asc)
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socket =
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socket
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|> assign(assigns)
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|> assign(columns: columns, rows: rows, last_sort_key: initial_key, sort_mode: :asc)
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{:ok, socket}
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end
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@impl true
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def handle_event(
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"sort_by",
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%{"sort-key" => key},
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%{assigns: %{rows: rows, last_sort_key: key, sort_mode: sort_mode}} = socket
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) do
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sort_mode = if sort_mode == :asc, do: :desc, else: :asc
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rows = rows |> sort_by_custom_sort_value_or_value(key, sort_mode)
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{:noreply, socket |> assign(sort_mode: sort_mode, rows: rows)}
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end
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def handle_event(
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"sort_by",
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%{"sort-key" => key},
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%{assigns: %{rows: rows}} = socket
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) do
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rows = rows |> sort_by_custom_sort_value_or_value(key, :asc)
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{:noreply, socket |> assign(last_sort_key: key, sort_mode: :asc, rows: rows)}
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end
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defp sort_by_custom_sort_value_or_value(rows, key, sort_mode) do
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rows
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|> Enum.sort_by(
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fn row ->
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case row |> Map.get(key) do
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{custom_sort_key, _value} -> custom_sort_key
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value -> value
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end
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end,
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sort_mode
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)
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end
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end
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52
lib/lokal_web/components/table_component.html.heex
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52
lib/lokal_web/components/table_component.html.heex
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<div class="w-full overflow-x-auto border border-gray-600 rounded-lg shadow-lg bg-black">
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<table class="min-w-full table-auto text-center bg-white">
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<thead class="border-b border-primary-600">
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<tr>
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<%= for %{key: key, label: label} = column <- @columns do %>
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<%= if column |> Map.get(:sortable, true) do %>
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<th class={"p-2 #{column[:class]}"}>
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<span
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class="cursor-pointer"
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phx-click="sort_by"
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phx-value-sort-key={key}
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phx-target={@myself}
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>
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<span class="underline"><%= label %></span>
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<%= if @last_sort_key == key do %>
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<%= case @sort_mode do %>
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<% :asc -> %>
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<i class="fas fa-sm fa-chevron-down"></i>
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<% :desc -> %>
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<i class="fas fa-sm fa-chevron-up"></i>
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<% end %>
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<% else %>
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<i class="fas fa-sm fa-chevron-up opacity-0"></i>
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<% end %>
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</span>
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</th>
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<% else %>
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<th class={"p-2 #{column[:class]}"}>
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<%= label %>
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</th>
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<% end %>
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<% end %>
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</tr>
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</thead>
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<tbody>
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<%= for values <- @rows do %>
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<tr>
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<%= for %{key: key} = value <- @columns do %>
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<td class={"p-2 #{value[:class]}"}>
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<%= case values |> Map.get(key) do %>
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<% {_custom_sort_value, value} -> %>
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<%= value %>
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<% value -> %>
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<%= value %>
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<% end %>
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</td>
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<% end %>
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</tr>
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<% end %>
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</tbody>
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</table>
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</div>
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