Add filtering by token type in /addresses/../tokens

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

@@ -279,7 +279,11 @@ defmodule BlockScoutWeb.API.V2.AddressController do
          {:not_found, {:ok, _address}} <- {:not_found, Chain.hash_to_address(address_hash, [], false)} do
       results_plus_one =
         address_hash
-        |> Chain.fetch_last_token_balances(paging_options(params))
+        |> Chain.fetch_last_token_balances(
+          params
+          |> paging_options()
+          |> Keyword.merge(token_transfers_types_options(params))
+        )
         |> Market.add_price()
 
       {tokens, next_page} = split_list_by_page(results_plus_one)

apps/explorer/lib/explorer/chain.ex

@@ -5145,10 +5145,12 @@ defmodule Explorer.Chain do
   end
 
   @spec fetch_last_token_balances(Hash.Address.t(), [paging_options]) :: []
-  def fetch_last_token_balances(address_hash, paging_options) do
+  def fetch_last_token_balances(address_hash, options) do
+    filter = Keyword.get(options, :token_type)
+
     address_hash
-    |> CurrentTokenBalance.last_token_balances(paging_options)
+    |> CurrentTokenBalance.last_token_balances(options, filter)
-    |> page_current_token_balances(paging_options)
+    |> page_current_token_balances(options)
     |> Repo.all()
   end
 

apps/explorer/lib/explorer/chain/address/current_token_balance.ex

@@ -158,7 +158,22 @@ defmodule Explorer.Chain.Address.CurrentTokenBalance do
   @doc """
   Builds an `t:Ecto.Query.t/0` to fetch the current token balances of the given address.
   """
-  def last_token_balances(address_hash) do
+  def last_token_balances(address_hash, type \\ [])
+
+  def last_token_balances(address_hash, [type | _]) do
+    from(
+      ctb in __MODULE__,
+      where: ctb.address_hash == ^address_hash,
+      where: ctb.value > 0,
+      where: ctb.token_type == ^type,
+      left_join: t in Token,
+      on: ctb.token_contract_address_hash == t.contract_address_hash,
+      select: {ctb, t},
+      order_by: [desc: ctb.value, asc: t.type, asc: t.name]
+    )
+  end
+
+  def last_token_balances(address_hash, _) do
     from(
       ctb in __MODULE__,
       where: ctb.address_hash == ^address_hash,
@@ -173,11 +188,11 @@ defmodule Explorer.Chain.Address.CurrentTokenBalance do
   @doc """
   Builds an `t:Ecto.Query.t/0` to fetch the current token balances of the given address (paginated version).
   """
-  def last_token_balances(address_hash, options) do
+  def last_token_balances(address_hash, options, type) do
     paging_options = Keyword.get(options, :paging_options, @default_paging_options)
 
     address_hash
-    |> last_token_balances()
+    |> last_token_balances(type)
     |> limit(^paging_options.page_size)
   end