Add zkEVM fields to API v2 response for transaction page

apps/block_scout_web/lib/block_scout_web/controllers/api/v2/transaction_controller.ex

@@ -63,12 +63,19 @@ defmodule BlockScoutWeb.API.V2.TransactionController do
   @api_true [api?: true]
 
   def transaction(conn, %{"transaction_hash_param" => transaction_hash_string} = params) do
+    necessity_by_association =
+      @transaction_necessity_by_association
+      |> Map.put(:transaction_actions, :optional)
+      |> Map.put(:zkevm_batch, :optional)
+      |> Map.put(:zkevm_sequence_txn, :optional)
+      |> Map.put(:zkevm_verify_txn, :optional)
+
     with {:format, {:ok, transaction_hash}} <- {:format, Chain.string_to_transaction_hash(transaction_hash_string)},
          {:not_found, {:ok, transaction}} <-
            {:not_found,
             Chain.hash_to_transaction(
               transaction_hash,
-              necessity_by_association: Map.put(@transaction_necessity_by_association, :transaction_actions, :optional),
+              necessity_by_association: necessity_by_association,
               api?: true
             )},
          {:ok, false} <- AccessHelper.restricted_access?(to_string(transaction.from_address_hash), params),

apps/block_scout_web/lib/block_scout_web/views/api/v2/transaction_view.ex

@@ -408,12 +408,26 @@ defmodule BlockScoutWeb.API.V2.TransactionView do
       "has_error_in_internal_txs" => transaction.has_error_in_internal_txs
     }
 
-    if Application.get_env(:explorer, :chain_type) == "polygon_edge" && single_tx? do
+    case single_tx? && Application.get_env(:explorer, :chain_type) do
+      "polygon_edge" ->
         result
         |> Map.put("polygon_edge_deposit", polygon_edge_deposit(transaction.hash, conn))
         |> Map.put("polygon_edge_withdrawal", polygon_edge_withdrawal(transaction.hash, conn))
-    else
+
+      "polygon_zkevm" ->
         result
+        |> add_optional_transaction_field(transaction, "zkevm_batch_number", :zkevm_batch, :number)
+        |> add_optional_transaction_field(transaction, "zkevm_sequence_hash", :zkevm_sequence_txn, :hash)
+        |> add_optional_transaction_field(transaction, "zkevm_verify_hash", :zkevm_verify_txn, :hash)
+
+      _ -> result
+    end
+  end
+
+  defp add_optional_transaction_field(result, transaction, field_name, assoc_name, assoc_field) do
+    case Map.get(transaction, assoc_name) do
+      nil -> result
+      item -> Map.put(result, field_name, Map.get(item, assoc_field))
     end
   end
 

apps/explorer/lib/explorer/chain/transaction.ex

@@ -27,7 +27,8 @@ defmodule Explorer.Chain.Transaction do
     TokenTransfer,
     Transaction,
     TransactionAction,
-    Wei
+    Wei,
+    ZkevmBatchTxn
   }
 
   alias Explorer.Chain.Transaction.{Fork, Status}
@@ -275,6 +276,11 @@ defmodule Explorer.Chain.Transaction do
 
     has_many(:uncles, through: [:forks, :uncle])
 
+    has_one(:zkevm_batch_txn, ZkevmBatchTxn, foreign_key: :hash)
+    has_one(:zkevm_batch, through: [:zkevm_batch_txn, :batch])
+    has_one(:zkevm_sequence_txn, through: [:zkevm_batch, :sequence_transaction])
+    has_one(:zkevm_verify_txn, through: [:zkevm_batch, :verify_transaction])
+
     belongs_to(
       :created_contract_address,
       Address,

apps/explorer/lib/explorer/chain/zkevm_batch_txn.ex

@@ -17,7 +17,7 @@ defmodule Explorer.Chain.ZkevmBatchTxn do
   @primary_key false
   schema "zkevm_batch_l2_transactions" do
     belongs_to(:batch, ZkevmTxnBatch, foreign_key: :batch_number, references: :number, type: :integer)
-    belongs_to(:l2_transaction, Transaction, foreign_key: :hash, references: :hash, type: Hash.Full)
+    belongs_to(:l2_transaction, Transaction, foreign_key: :hash, primary_key: true, references: :hash, type: Hash.Full)
 
     timestamps()
   end

apps/explorer/priv/repo/migrations/20230420110800_create_zkevm_tables.exs

@@ -45,10 +45,8 @@ defmodule Explorer.Repo.Migrations.CreateZkevmTables do
         null: false
       )
 
-      add(:hash, :bytea, null: false)
+      add(:hash, :bytea, null: false, primary_key: true)
       timestamps(null: false, type: :utc_datetime_usec)
     end
-
-    create(unique_index(:zkevm_batch_l2_transactions, :hash))
   end
 end