Merge pull request #4690 from blockscout/np-improve-pagination

Improve pagination

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## Current
 
 ### Features
+- [#4690](https://github.com/blockscout/blockscout/pull/4690) - Improve pagination: introduce pagination with random access to pages; Integrate it to the Transactions List page
 
 ### Fixes
 

apps/block_scout_web/assets/css/components/_pagination_container.scss

@@ -91,6 +91,7 @@ $pagination-page-link-color-active: #fff !default;
       user-select: none;
       text-align: center;
       white-space: nowrap;
+      cursor: pointer;
 
       &:not(.no-hover):hover {
         @include pagination-container-base($pagination-page-link-background-active, $pagination-page-link-color-active);
@@ -112,9 +113,78 @@ $pagination-page-link-color-active: #fff !default;
         pointer-events: none;
       }
     }
+
+    .page-link-light-hover {
+      &:not(.no-hover):hover {
+        @include pagination-container-base($pagination-page-link-background-active, $pagination-page-link-color-active);
+        background-color: rgba($pagination-page-link-background-active, 0.5);
+        border-color: rgba($pagination-page-link-background-active, 0.5);
+      }
+    }
+  }
+}
+
+.tb {
+  background-color: #00000000 !important;
+  border: none !important;
+}
+
+.ml10 {
+  margin-left: 10px;
+}
+
+.mlm17 {
+  @include media-breakpoint-down(sm) {
+    margin-left: -17px;
+  }
+}
+
+.mrm18 {
+  @include media-breakpoint-down(sm) {
+    margin-right: -18px;
+  }
+}
+
+.go-to {
+  @include media-breakpoint-down(sm) {
+    margin-top: 10px !important;
+    justify-content: end !important;
+  }
+}
+
+.limit {
+  color: $pagination-page-link-color;
+  font-size: 12px;
+  font-weight: 600;
+  height: 24px;
+  margin-top: -25px;
+  text-align: right;
+  @include media-breakpoint-down(sm) {
+    display: none;
   }
 }
 
+.align-end {
+  align-self: end;
+}
+
+.page-number {
+  background-color: $pagination-page-link-background;
+  border-width: 1px;
+  border-style: solid;
+  border-radius: 2px;
+  border-color: $pagination-page-link-color;
+  color: $pagination-page-link-color;
+}
+
+.page-number:focus {
+  border: 1px solid $pagination-page-link-color;
+}
+
+.fml5 {
+  margin-left: 5px !important;
+}
+
 .top-pagination-outer-container {
   display: flex;
 }

apps/block_scout_web/assets/js/lib/random_access_pagination.js

@@ -0,0 +1,369 @@
+import $ from 'jquery'
+import map from 'lodash/map'
+import merge from 'lodash/merge'
+import humps from 'humps'
+import URI from 'urijs'
+import listMorph from '../lib/list_morph'
+import reduceReducers from 'reduce-reducers'
+import { createStore, connectElements } from '../lib/redux_helpers.js'
+import '../app'
+
+const maxPageNumberInOneLine = 7
+const groupedPagesNumber = 3
+
+/**
+ *
+ * This module is a clone of async_listing_load.js adapted for pagination with random access
+ *
+ */
+
+let enableFirstLoading = true
+
+export const asyncInitialState = {
+  /* it will consider any query param in the current URI as paging */
+  beyondPageOne: false,
+  /* will be sent along with { type: 'JSON' } to controller, useful for dynamically changing parameters */
+  additionalParams: {},
+  /* an array with every html element of the list being shown */
+  items: [],
+  /* the key for diffing the elements in the items array */
+  itemKey: null,
+  /* represents whether a request is happening or not */
+  loading: false,
+  /* if there was an error fetching items */
+  requestError: false,
+  /* if response has no items */
+  emptyResponse: false,
+  /* current's page number */
+  currentPageNumber: 0
+}
+
+export function asyncReducer (state = asyncInitialState, action) {
+  switch (action.type) {
+    case 'ELEMENTS_LOAD': {
+      return Object.assign({}, state, {
+        nextPagePath: action.nextPagePath,
+        currentPagePath: action.nextPagePath
+      })
+    }
+    case 'ADD_ITEM_KEY': {
+      return Object.assign({}, state, { itemKey: action.itemKey })
+    }
+    case 'START_REQUEST': {
+      let pageNumber = state.currentPageNumber
+      if (action.pageNumber) { pageNumber = parseInt(action.pageNumber) }
+
+      return Object.assign({}, state, {
+        loading: true,
+        requestError: false,
+        currentPagePath: action.path,
+        currentPageNumber: pageNumber,
+        items: generateStub(state.items.length)
+      })
+    }
+    case 'REQUEST_ERROR': {
+      return Object.assign({}, state, { requestError: true })
+    }
+    case 'FINISH_REQUEST': {
+      return Object.assign({}, state, {
+        loading: false
+      })
+    }
+    case 'ITEMS_FETCHED': {
+      if (action.nextPageParams !== null) {
+        const pageNumber = parseInt(action.nextPageParams.pageNumber)
+        if (typeof action.path !== 'undefined') {
+          history.replaceState({}, null, URI(action.path).query(humps.decamelizeKeys(action.nextPageParams)))
+        }
+        delete action.nextPageParams.pageNumber
+
+        return Object.assign({}, state, {
+          requestError: false,
+          emptyResponse: action.items.length === 0,
+          items: action.items,
+          nextPageParams: humps.decamelizeKeys(action.nextPageParams),
+          pagesLimit: parseInt(action.nextPageParams.pagesLimit),
+          currentPageNumber: pageNumber,
+          beyondPageOne: pageNumber !== 1
+        })
+      }
+      return Object.assign({}, state, {
+        requestError: false,
+        emptyResponse: action.items.length === 0,
+        items: action.items,
+        nextPageParams: humps.decamelizeKeys(action.nextPageParams),
+        pagesLimit: 1,
+        currentPageNumber: 1,
+        beyondPageOne: false
+      })
+    }
+    default:
+      return state
+  }
+}
+
+export const elements = {
+  '[data-async-listing]': {
+    load ($el) {
+      const nextPagePath = $el.data('async-listing')
+
+      return { nextPagePath }
+    }
+  },
+  '[data-async-listing] [data-loading-message]': {
+    render ($el, state) {
+      if (state.loading) return $el.show()
+
+      $el.hide()
+    }
+  },
+  '[data-async-listing] [data-empty-response-message]': {
+    render ($el, state) {
+      if (
+        !state.requestError &&
+        (!state.loading) &&
+        state.items.length === 0
+      ) {
+        return $el.show()
+      }
+
+      $el.hide()
+    }
+  },
+  '[data-async-listing] [data-error-message]': {
+    render ($el, state) {
+      if (state.requestError) return $el.show()
+
+      $el.hide()
+    }
+  },
+  '[data-async-listing] [data-items]': {
+    render ($el, state, oldState) {
+      if (state.items === oldState.items) return
+
+      if (state.itemKey) {
+        const container = $el[0]
+        const newElements = map(state.items, (item) => $(item)[0])
+        listMorph(container, newElements, { key: state.itemKey })
+        return
+      }
+
+      $el.html(state.items)
+    }
+  },
+  '[data-async-listing] [data-next-page-button]': {
+    render ($el, state) {
+      if (state.emptyResponse) {
+        return $el.hide()
+      }
+
+      $el.show()
+      if (state.requestError || state.currentPageNumber >= state.pagesLimit || state.loading) {
+        return $el.attr('disabled', 'disabled')
+      }
+
+      $el.attr('disabled', false)
+      $el.attr('href', state.nextPagePath)
+    }
+  },
+  '[data-async-listing] [data-prev-page-button]': {
+    render ($el, state) {
+      if (state.emptyResponse) {
+        return $el.hide()
+      }
+
+      $el.show()
+      if (state.requestError || state.currentPageNumber <= 1 || state.loading) {
+        return $el.attr('disabled', 'disabled')
+      }
+
+      $el.attr('disabled', false)
+      $el.attr('href', state.prevPagePath)
+    }
+  },
+  '[data-async-listing] [pages-numbers-container]': {
+    render ($el, state) {
+      if (typeof state.pagesLimit !== 'undefined') { pagesNumbersGenerate(state.pagesLimit, $el, state.currentPageNumber, state.loading) }
+    }
+  },
+  '[data-async-listing] [data-loading-button]': {
+    render ($el, state) {
+      if (state.loading) return $el.show()
+
+      $el.hide()
+    }
+  },
+  '[data-async-listing] [data-pagination-container]': {
+    render ($el, state) {
+      if (state.emptyResponse) {
+        return $el.hide()
+      }
+
+      $el.show()
+    }
+  },
+  '[csv-download]': {
+    render ($el, state) {
+      if (state.emptyResponse) {
+        return $el.hide()
+      }
+      return $el.show()
+    }
+  }
+}
+
+/**
+ * Create a store combining the given reducer and initial state with the async reducer.
+ *
+ * reducer: The reducer that will be merged with the asyncReducer to add async
+ * loading capabilities to a page. Any state changes in the reducer passed will be
+ * applied AFTER the asyncReducer.
+ *
+ * initialState: The initial state to be merged with the async state. Any state
+ * values passed here will overwrite the values on asyncInitialState.
+ *
+ * itemKey: it will be added to the state as the key for diffing the elements and
+ * adding or removing with the correct animation. Check list_morph.js for more informantion.
+ */
+export function createAsyncLoadStore (reducer, initialState, itemKey) {
+  const state = merge(asyncInitialState, initialState)
+  const store = createStore(reduceReducers(asyncReducer, reducer, state))
+
+  if (typeof itemKey !== 'undefined') {
+    store.dispatch({
+      type: 'ADD_ITEM_KEY',
+      itemKey
+    })
+  }
+
+  connectElements({ store, elements })
+  firstPageLoad(store)
+  return store
+}
+
+export function refreshPage (store) {
+  loadPageByNumber(store, store.getState().currentPageNumber)
+}
+
+export function loadPageByNumber (store, pageNumber) {
+  const path = $('[data-async-listing]').data('async-listing')
+  store.dispatch({ type: 'START_REQUEST', path, pageNumber })
+  if (URI(path).query() !== '' && typeof store.getState().nextPageParams === 'undefined') {
+    $.getJSON(path, { type: 'JSON' })
+      .done(response => store.dispatch(Object.assign({ type: 'ITEMS_FETCHED', path }, humps.camelizeKeys(response))))
+      .fail(() => store.dispatch({ type: 'REQUEST_ERROR' }))
+      .always(() => store.dispatch({ type: 'FINISH_REQUEST' }))
+  } else {
+    $.getJSON(URI(path).path(), merge({ type: 'JSON', page_number: pageNumber }, store.getState().nextPageParams))
+      .done(response => store.dispatch(Object.assign({ type: 'ITEMS_FETCHED', path }, humps.camelizeKeys(response))))
+      .fail(() => store.dispatch({ type: 'REQUEST_ERROR' }))
+      .always(() => store.dispatch({ type: 'FINISH_REQUEST' }))
+  }
+}
+
+function firstPageLoad (store) {
+  const $element = $('[data-async-listing]')
+  function loadItemsNext () {
+    loadPageByNumber(store, store.getState().currentPageNumber + 1)
+  }
+
+  function loadItemsPrev () {
+    loadPageByNumber(store, store.getState().currentPageNumber - 1)
+  }
+
+  if (enableFirstLoading) {
+    loadItemsNext()
+  }
+
+  $element.on('click', '[data-error-message]', (event) => {
+    event.preventDefault()
+    loadItemsNext()
+  })
+
+  $element.on('click', '[data-next-page-button]', (event) => {
+    event.preventDefault()
+    loadItemsNext()
+  })
+
+  $element.on('click', '[data-prev-page-button]', (event) => {
+    event.preventDefault()
+    loadItemsPrev()
+  })
+
+  $element.on('click', '[data-page-number]', (event) => {
+    event.preventDefault()
+    loadPageByNumber(store, event.target.dataset.pageNumber)
+  })
+
+  $element.on('submit', '[input-page-number-form]', (event) => {
+    event.preventDefault()
+    const $input = event.target.querySelector('#page-number')
+    const input = parseInt($input.value)
+    const loading = store.getState().loading
+    const pagesLimit = store.getState().pagesLimit
+    if (!isNaN(input) && input <= pagesLimit && !loading) { loadPageByNumber(store, input) }
+    if (!loading || isNaN(input) || input > pagesLimit) { $input.value = '' }
+    return false
+  })
+}
+
+const $element = $('[data-async-load]')
+if ($element.length) {
+  if (Object.prototype.hasOwnProperty.call($element.data(), 'noFirstLoading')) {
+    enableFirstLoading = false
+  }
+  if (enableFirstLoading) {
+    const store = createStore(asyncReducer)
+    connectElements({ store, elements })
+    firstPageLoad(store)
+  }
+}
+
+function pagesNumbersGenerate (pagesLimit, $container, currentPageNumber, loading) {
+  let resultHTML = ''
+  if (pagesLimit < 1) { return }
+  if (pagesLimit <= maxPageNumberInOneLine) {
+    resultHTML = renderPaginationElements(1, pagesLimit, currentPageNumber, loading)
+  } else if (currentPageNumber < groupedPagesNumber) {
+    resultHTML += renderPaginationElements(1, groupedPagesNumber, currentPageNumber, loading)
+    resultHTML += renderPaginationElement('...', false, loading)
+    resultHTML += renderPaginationElement(pagesLimit, currentPageNumber === pagesLimit, loading)
+  } else if (currentPageNumber > pagesLimit - groupedPagesNumber) {
+    resultHTML += renderPaginationElement(1, currentPageNumber === 1, loading)
+    resultHTML += renderPaginationElement('...', false, loading)
+    resultHTML += renderPaginationElements(pagesLimit - groupedPagesNumber, pagesLimit, currentPageNumber, loading)
+  } else {
+    resultHTML += renderPaginationElement(1, currentPageNumber === 1, loading)
+    const step = parseInt(groupedPagesNumber / 2)
+    if (currentPageNumber - step - 1 === 2) {
+      resultHTML += renderPaginationElement(2, currentPageNumber === 2, loading)
+    } else if (currentPageNumber - step > 2) {
+      resultHTML += renderPaginationElement('...', false, loading)
+    }
+    resultHTML += renderPaginationElements(currentPageNumber - step, currentPageNumber + step, currentPageNumber, loading)
+    if (currentPageNumber + step + 1 === pagesLimit - 1) {
+      resultHTML += renderPaginationElement(pagesLimit - 1, pagesLimit - 1 === currentPageNumber, loading)
+    } else if (currentPageNumber + step < pagesLimit - 1) {
+      resultHTML += renderPaginationElement('...', false, loading)
+    }
+    resultHTML += renderPaginationElement(pagesLimit, currentPageNumber === pagesLimit, loading)
+  }
+  $container.html(resultHTML)
+}
+
+function renderPaginationElements (start, end, currentPageNumber, loading) {
+  let resultHTML = ''
+  for (let i = start; i <= end; i++) {
+    resultHTML += renderPaginationElement(i, i === currentPageNumber, loading)
+  }
+  return resultHTML
+}
+
+function renderPaginationElement (text, active, loading) {
+  return '<li class="page-item' + (active ? ' active' : '') + (text === '...' || loading ? ' disabled' : '') + '"><a class="page-link page-link-light-hover" data-page-number=' + text + '>' + text + '</a></li>'
+}
+
+function generateStub (size) {
+  const stub = '<div data-loading-message data-selector="loading-message" class="tile tile-type-loading"> <div class="row tile-body"> <div class="tile-transaction-type-block col-md-2 d-flex flex-row flex-md-column"> <span class="tile-label"> <span class="tile-loader tile-label-loader"></span> </span> <span class="tile-status-label ml-2 ml-md-0"> <span class="tile-loader tile-label-loader"></span> </span> </div> <div class="col-md-7 col-lg-8 d-flex flex-column pr-2 pr-sm-2 pr-md-0"> <span class="tile-loader tile-address-loader"></span> <span class="tile-loader tile-address-loader"></span> </div> <div class="col-md-3 col-lg-2 d-flex flex-row flex-md-column flex-nowrap justify-content-center text-md-right mt-3 mt-md-0 tile-bottom"> <span class="mr-2 mr-md-0 order-1"> <span class="tile-loader tile-label-loader"></span> </span> <span class="mr-2 mr-md-0 order-2"> <span class="tile-loader tile-label-loader"></span> </span> </div> </div> </div>'
+  return Array.from(Array(size > 10 ? 10 : 10), () => stub) // I decided to always put 10 lines in order to make page lighter
+}

apps/block_scout_web/assets/js/pages/transactions.js

@@ -4,7 +4,7 @@ import humps from 'humps'
 import numeral from 'numeral'
 import socket from '../socket'
 import { connectElements } from '../lib/redux_helpers'
-import { createAsyncLoadStore } from '../lib/async_listing_load'
+import { createAsyncLoadStore } from '../lib/random_access_pagination'
 import { batchChannel } from '../lib/utils'
 import '../app'
 
@@ -95,8 +95,12 @@ if ($transactionListPage.length) {
   transactionsChannel.onError(() => store.dispatch({
     type: 'CHANNEL_DISCONNECTED'
   }))
-  transactionsChannel.on('transaction', batchChannel((msgs) => store.dispatch({
+  transactionsChannel.on('transaction', batchChannel((msgs) => {
+    if (!store.getState().beyondPageOne && !store.getState().loading) {
+      store.dispatch({
         type: 'RECEIVED_NEW_TRANSACTION_BATCH',
         msgs: humps.camelizeKeys(msgs)
-  })))
+      })
+    }
+  }))
 }

apps/block_scout_web/lib/block_scout_web/chain.ex

@@ -223,6 +223,22 @@ defmodule BlockScoutWeb.Chain do
     [paging_options: Map.put(paging_options, key, value)]
   end
 
+  def fetch_page_number(%{"page_number" => page_number_string}) do
+    case Integer.parse(page_number_string) do
+      {number, ""} ->
+        number
+
+      _ ->
+        1
+    end
+  end
+
+  def fetch_page_number(_), do: 1
+
+  def update_page_parameters(new_page_number, new_page_size, %PagingOptions{} = options) do
+    %PagingOptions{options | page_number: new_page_number, page_size: new_page_size}
+  end
+
   def param_to_block_number(formatted_number) when is_binary(formatted_number) do
     case Integer.parse(formatted_number) do
       {number, ""} -> {:ok, number}

apps/block_scout_web/lib/block_scout_web/controllers/transaction_controller.ex

@@ -1,7 +1,14 @@
 defmodule BlockScoutWeb.TransactionController do
   use BlockScoutWeb, :controller
 
-  import BlockScoutWeb.Chain, only: [paging_options: 1, next_page_params: 3, split_list_by_page: 1]
+  import BlockScoutWeb.Chain,
+    only: [
+      fetch_page_number: 1,
+      paging_options: 1,
+      next_page_params: 3,
+      update_page_parameters: 3,
+      split_list_by_page: 1
+    ]
 
   alias BlockScoutWeb.{AccessHelpers, Controller, TransactionView}
   alias Explorer.Chain
@@ -10,30 +17,59 @@ defmodule BlockScoutWeb.TransactionController do
   {:ok, burn_address_hash} = Chain.string_to_address_hash("0x0000000000000000000000000000000000000000")
   @burn_address_hash burn_address_hash
 
-  def index(conn, %{"type" => "JSON"} = params) do
-    full_options =
-      Keyword.merge(
-        [
+  @default_options [
     necessity_by_association: %{
       :block => :required,
       [created_contract_address: :names] => :optional,
       [from_address: :names] => :optional,
       [to_address: :names] => :optional
     }
-        ],
-        paging_options(params)
+  ]
+
+  def index(conn, %{"type" => "JSON"} = params) do
+    options =
+      @default_options
+      |> Keyword.merge(paging_options(params))
+
+    full_options =
+      options
+      |> Keyword.put(
+        :paging_options,
+        params
+        |> fetch_page_number()
+        |> update_page_parameters(Chain.default_page_size(), Keyword.get(options, :paging_options))
       )
 
-    transactions_plus_one = Chain.recent_collated_transactions(full_options)
-    {transactions, next_page} = split_list_by_page(transactions_plus_one)
+    %{total_transactions_count: transactions_count, transactions: transactions_plus_one} =
+      Chain.recent_collated_transactions_for_rap(full_options)
+
+    {transactions, next_page} =
+      if fetch_page_number(params) == 1 do
+        split_list_by_page(transactions_plus_one)
+      else
+        {transactions_plus_one, nil}
+      end
+
+    next_page_params =
+      if fetch_page_number(params) == 1 do
+        page_size = Chain.default_page_size()
+
+        pages_limit = transactions_count |> Kernel./(page_size) |> Float.ceil() |> trunc()
 
-    next_page_path =
         case next_page_params(next_page, transactions, params) do
           nil ->
             nil
 
           next_page_params ->
-          transaction_path(conn, :index, Map.delete(next_page_params, "type"))
+            next_page_params
+            |> Map.delete("type")
+            |> Map.delete("items_count")
+            |> Map.put("pages_limit", pages_limit)
+            |> Map.put("page_size", page_size)
+            |> Map.put("page_number", 1)
+        end
+      else
+        Map.delete(params, "type")
       end
 
     json(
@@ -49,7 +85,7 @@ defmodule BlockScoutWeb.TransactionController do
               conn: conn
             )
           end),
-        next_page_path: next_page_path
+        next_page_params: next_page_params
       }
     )
   end

apps/block_scout_web/lib/block_scout_web/templates/common_components/_rap_pagination_container.html.eex

@@ -0,0 +1,15 @@
+<div 
+class='pagination-container mlm17 mrm18 <%= if assigns[:position] == "top" do %>position-top<% end %> <%= if assigns[:position] == "bottom" do %>position-bottom<% end %>'
+data-pagination-container>
+    <ul class="pagination align-end" pages-numbers-container>
+    </ul>
+    <ul class="pagination fml5 go-to">
+        <!-- Go to -->
+        <li class="page-link no-hover tb ml10" ><%= gettext("Go to")%></li>
+        <li class="page-item"><form input-page-number-form><input class="page-number" id="page-number" type=text size=3><input class="d-none" type=submit input-page-number></form></li>
+    </ul>
+</div>
+<%= if assigns[:showing_limit] do %>
+    <div class="limit mrm18" >(<%= gettext("Only the first")%> <%= assigns[:showing_limit] |> BlockScoutWeb.Cldr.Number.to_string! %> <%= gettext("elements are displayed")%>)
+    </div>
+<% end %>

apps/block_scout_web/lib/block_scout_web/templates/transaction/index.html.eex

@@ -11,7 +11,7 @@
     <div class="card-body" data-async-listing="<%= @current_path %>">
       <h1 class="card-title list-title-description"><%= gettext "Validated Transactions" %></h1>
       <div class="list-top-pagination-container-wrapper">
-        <%= render BlockScoutWeb.CommonComponentsView, "_pagination_container.html", position: "top", cur_page_number: "1", show_pagination_limit: true, data_next_page_button: true, data_prev_page_button: true %>
+        <%= render BlockScoutWeb.CommonComponentsView, "_rap_pagination_container.html", position: "top", showing_limit: if Chain.transactions_available_count() == Chain.limit_shownig_transactions(), do: Chain.limit_shownig_transactions(), else: nil %>
       </div>
 
       <div data-selector="channel-batching-message" class="d-none">
@@ -37,7 +37,7 @@
         <%= render BlockScoutWeb.CommonComponentsView, "_tile-loader.html" %>
       </div>
 
-      <%= render BlockScoutWeb.CommonComponentsView, "_pagination_container.html", position: "bottom", cur_page_number: "1", show_pagination_limit: true, data_next_page_button: true, data_prev_page_button: true %>
+      <%= render BlockScoutWeb.CommonComponentsView, "_rap_pagination_container.html", position: "bottom" %>
 
   </div>
   <script defer data-cfasync="false" src="<%= static_path(@conn, "/js/validated-transactions.js") %>"></script>

apps/block_scout_web/priv/gettext/default.pot

@@ -1242,6 +1242,11 @@ msgstr ""
 msgid "Github"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/common_components/_rap_pagination_container.html.eex:8
+msgid "Go to"
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/layout/_topnav.html.eex:128
 msgid "GraphQL"
@@ -1705,6 +1710,11 @@ msgstr ""
 msgid "OUT"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/common_components/_rap_pagination_container.html.eex:13
+msgid "Only the first"
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/address_contract/index.html.eex:61
 msgid "Optimization enabled"
@@ -3190,6 +3200,11 @@ msgstr ""
 msgid "custom RPC"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/common_components/_rap_pagination_container.html.eex:13
+msgid "elements are displayed"
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/smart_contract/_functions.html.eex:41
 msgid "fallback"

apps/block_scout_web/priv/gettext/en/LC_MESSAGES/default.po

@@ -1242,6 +1242,11 @@ msgstr ""
 msgid "Github"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/common_components/_rap_pagination_container.html.eex:8
+msgid "Go to"
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/layout/_topnav.html.eex:128
 msgid "GraphQL"
@@ -1705,6 +1710,11 @@ msgstr ""
 msgid "OUT"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/common_components/_rap_pagination_container.html.eex:13
+msgid "Only the first"
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/address_contract/index.html.eex:61
 msgid "Optimization enabled"
@@ -3190,6 +3200,11 @@ msgstr ""
 msgid "custom RPC"
 msgstr ""
 
+#, elixir-format
+#: lib/block_scout_web/templates/common_components/_rap_pagination_container.html.eex:13
+msgid "elements are displayed"
+msgstr ""
+
 #, elixir-format
 #: lib/block_scout_web/templates/smart_contract/_functions.html.eex:41
 msgid "fallback"

apps/block_scout_web/test/block_scout_web/controllers/transaction_controller_test.exs

@@ -91,7 +91,7 @@ defmodule BlockScoutWeb.TransactionControllerTest do
 
       conn = get(conn, transaction_path(conn, :index, %{"type" => "JSON"}))
 
-      assert conn |> json_response(200) |> Map.get("next_page_path")
+      assert conn |> json_response(200) |> Map.get("next_page_params")
     end
 
     test "next_page_params are empty if on last page", %{conn: conn} do

apps/explorer/lib/explorer/chain.ex

@@ -104,6 +104,9 @@ defmodule Explorer.Chain do
   # seconds
   @check_bytecode_interval 86_400
 
+  @limit_showing_transaсtions 10_000
+  @default_page_size 50
+
   @typedoc """
   The name of an association on the `t:Ecto.Schema.t/0`
   """
@@ -3245,6 +3248,61 @@ defmodule Explorer.Chain do
     end
   end
 
+  # RAP - random access pagination
+  @spec recent_collated_transactions_for_rap([paging_options | necessity_by_association_option]) :: %{
+          :total_transactions_count => non_neg_integer(),
+          :transactions => [Transaction.t()]
+        }
+  def recent_collated_transactions_for_rap(options \\ []) when is_list(options) do
+    necessity_by_association = Keyword.get(options, :necessity_by_association, %{})
+    paging_options = Keyword.get(options, :paging_options, @default_paging_options)
+
+    total_transactions_count = transactions_available_count()
+
+    fetched_transactions =
+      if is_nil(paging_options.key) or paging_options.page_number == 1 do
+        paging_options.page_size
+        |> Kernel.+(1)
+        |> Transactions.take_enough()
+        |> case do
+          nil ->
+            transactions = fetch_recent_collated_transactions_for_rap(paging_options, necessity_by_association)
+            Transactions.update(transactions)
+            transactions
+
+          transactions ->
+            transactions
+        end
+      else
+        fetch_recent_collated_transactions_for_rap(paging_options, necessity_by_association)
+      end
+
+    %{total_transactions_count: total_transactions_count, transactions: fetched_transactions}
+  end
+
+  def default_page_size, do: @default_page_size
+
+  def fetch_recent_collated_transactions_for_rap(paging_options, necessity_by_association) do
+    fetch_transactions_for_rap()
+    |> where([transaction], not is_nil(transaction.block_number) and not is_nil(transaction.index))
+    |> handle_random_access_paging_options(paging_options)
+    |> join_associations(necessity_by_association)
+    |> preload([{:token_transfers, [:token, :from_address, :to_address]}])
+    |> Repo.all()
+  end
+
+  defp fetch_transactions_for_rap do
+    Transaction
+    |> order_by([transaction], desc: transaction.block_number, desc: transaction.index)
+  end
+
+  def transactions_available_count do
+    Transaction
+    |> where([transaction], not is_nil(transaction.block_number) and not is_nil(transaction.index))
+    |> limit(^@limit_showing_transaсtions)
+    |> Repo.aggregate(:count, :hash)
+  end
+
   def fetch_recent_collated_transactions(paging_options, necessity_by_association) do
     paging_options
     |> fetch_transactions()
@@ -4311,6 +4369,47 @@ defmodule Explorer.Chain do
     |> limit(^paging_options.page_size)
   end
 
+  defp handle_random_access_paging_options(query, empty_options) when empty_options in [nil, [], %{}],
+    do: limit(query, ^(@default_page_size + 1))
+
+  defp handle_random_access_paging_options(query, paging_options) do
+    query
+    |> (&if(paging_options |> Map.get(:page_number, 1) |> proccess_page_number() == 1,
+          do: &1,
+          else: page_transaction(&1, paging_options)
+        )).()
+    |> handle_page(paging_options)
+  end
+
+  defp handle_page(query, paging_options) do
+    page_number = paging_options |> Map.get(:page_number, 1) |> proccess_page_number()
+    page_size = Map.get(paging_options, :page_size, @default_page_size)
+
+    cond do
+      page_in_bounds?(page_number, page_size) && page_number == 1 ->
+        query
+        |> limit(^(page_size + 1))
+
+      page_in_bounds?(page_number, page_size) ->
+        query
+        |> limit(^page_size)
+        |> offset(^((page_number - 2) * page_size))
+
+      true ->
+        query
+        |> limit(^(@default_page_size + 1))
+    end
+  end
+
+  defp proccess_page_number(number) when number < 1, do: 1
+
+  defp proccess_page_number(number), do: number
+
+  defp page_in_bounds?(page_number, page_size),
+    do: page_size <= @limit_showing_transaсtions && @limit_showing_transaсtions - page_number * page_size >= 0
+
+  def limit_shownig_transactions, do: @limit_showing_transaсtions
+
   defp join_association(query, [{association, nested_preload}], necessity)
        when is_atom(association) and is_atom(nested_preload) do
     case necessity do