show external libraries in UI

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

@@ -52,13 +52,13 @@
               <dd class="col-sm-8 col-md-10"><%= @address.smart_contract.constructor_arguments %></dd>
             </dl>
           <% end %>
-          <%= if @address.smart_contract.external_libraries do %>
+          <%= if @address.smart_contract.external_libraries && @address.smart_contract.external_libraries != [] do %>
             <section>
               <div class="d-flex justify-content-between align-items-baseline">
                 <h3><%= gettext "External libraries" %></h3>
               </div>
               <div class="tile tile-muted mb-4">
-                <pre class="pre-wrap pre-scrollable"><code class="nohighlight"><%= format_smart_contract_abi(@address.smart_contract.abi) %></code>
+                <pre class="pre-wrap pre-scrollable"><code class="nohighlight"><%= format_external_libraries(@address.smart_contract.external_libraries) %></code>
                 </pre>
               </div>
             </section>

apps/block_scout_web/lib/block_scout_web/views/address_contract_view.ex

@@ -21,6 +21,12 @@ defmodule BlockScoutWeb.AddressContractView do
   def format_optimization_text(true), do: gettext("true")
   def format_optimization_text(false), do: gettext("false")
 
+  def format_external_libraries(libraries) do
+    Enum.reduce(libraries, "", fn %{name: name, address_hash: address_hash}, acc ->
+      acc <> name <> " : " <> address_hash <> "\n"
+    end)
+  end
+
   def contract_lines_with_index(contract_source_code) do
     contract_lines = String.split(contract_source_code, "\n")
 

apps/explorer/lib/explorer/chain.ex

@@ -2394,8 +2394,13 @@ defmodule Explorer.Chain do
   naming the address for reference.
   """
   @spec create_smart_contract(map()) :: {:ok, SmartContract.t()} | {:error, Ecto.Changeset.t()}
-  def create_smart_contract(attrs \\ %{}) do
-    smart_contract_changeset = SmartContract.changeset(%SmartContract{}, attrs)
+  def create_smart_contract(attrs \\ %{}, external_libraries \\ []) do
+    new_contract = %SmartContract{}
+
+    smart_contract_changeset =
+      new_contract
+      |> SmartContract.changeset(attrs)
+      |> Changeset.put_change(:external_libraries, external_libraries)
 
     insert_result =
       Multi.new()

apps/explorer/lib/explorer/smart_contract/publisher.ex

@@ -36,9 +36,9 @@ defmodule Explorer.SmartContract.Publisher do
   end
 
   defp publish_smart_contract(address_hash, params, abi) do
-    address_hash
-    |> attributes(params, abi)
-    |> Chain.create_smart_contract()
+    attrs = address_hash |> attributes(params, abi)
+
+    Chain.create_smart_contract(attrs, attrs.external_libraries)
   end
 
   defp unverified_smart_contract(address_hash, params, error) do
@@ -64,6 +64,8 @@ defmodule Explorer.SmartContract.Publisher do
         nil
       end
 
+    prepared_external_libraries = prepare_external_libraies(params["external_libraries"])
+
     %{
       address_hash: address_hash,
       name: params["name"],
@@ -73,11 +75,20 @@ defmodule Explorer.SmartContract.Publisher do
       optimization: params["optimization"],
       contract_source_code: params["contract_source_code"],
       constructor_arguments: clean_constructor_arguments,
-      external_libaries: params["external_libraries"],
+      external_libraries: prepared_external_libraries,
       abi: abi
     }
   end
 
+  defp prepare_external_libraies(nil), do: []
+
+  defp prepare_external_libraies(map) do
+    map
+    |> Enum.map(fn {key, value} ->
+      %{name: key, address_hash: value}
+    end)
+  end
+
   defp add_external_libraries(params, external_libraries) do
     clean_external_libraries =
       Enum.reduce(1..5, %{}, fn number, acc ->