Consolidate address rendering view function and partials

apps/block_scout_web/lib/block_scout_web/templates/address/_link.html.eex

@@ -1,5 +1,3 @@
-<%= if @address_hash do %>
 <%= link to: address_path(BlockScoutWeb.Endpoint, :show, @address_hash), "data-test": "address_hash_link" do %>
   <%= render BlockScoutWeb.AddressView, "_responsive_hash.html", address_hash: @address_hash, contract: @contract, truncate: assigns[:truncate] %>
 <% end %>
-<% end %>

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

@@ -11,13 +11,9 @@
     <div class="col-md-7 col-lg-8 d-flex flex-column pr-2 pr-sm-2 pr-md-0">
       <%= render "_link.html", transaction_hash: @transaction.hash %>
       <span class="text-nowrap">
-        <%= BlockScoutWeb.AddressView.display_address_hash(assigns[:current_address], @transaction.from_address) %>
+        <%= BlockScoutWeb.AddressView.display_address_hash(assigns[:current_address], @transaction, :from) %>
         &rarr;
-        <%= if assigns[:current_address] && assigns[:current_address].hash == to_address_hash(@transaction) do %>
-          <%= render BlockScoutWeb.AddressView, "_responsive_hash.html", address_hash: to_address_hash(@transaction), contract: BlockScoutWeb.AddressView.contract?(@transaction.to_address) %>
-        <% else %>
-          <%= render BlockScoutWeb.AddressView, "_link.html", address_hash: to_address_hash(@transaction), contract: BlockScoutWeb.AddressView.contract?(@transaction.to_address) %>
-        <% end %>
+        <%= BlockScoutWeb.AddressView.display_address_hash(assigns[:current_address], @transaction, :to) %>
       </span>
       <span class="d-flex flex-md-row flex-column mt-3 mt-md-0">
         <span class="tile-title">

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

@@ -11,9 +11,9 @@
         </span>
       <% end %>
     <% end %>
-    <%= BlockScoutWeb.AddressView.display_address_hash(@address, @token_transfer.from_address, true) %>
+    <%= BlockScoutWeb.AddressView.display_address_hash(@address, @token_transfer, :from, true) %>
     &rarr;
-    <%= BlockScoutWeb.AddressView.display_address_hash(@address, @token_transfer.to_address, true) %>
+    <%= BlockScoutWeb.AddressView.display_address_hash(@address, @token_transfer, :to, true) %>
   </span>
   <span class="col-12 col-md-7 ml-3 ml-sm-0">
   <%= token_transfer_amount(@token_transfer) %>

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

@@ -15,9 +15,9 @@
           <h1 class="card-title"><%= gettext "Transaction Details" %> </h1>
           <h3 data-test="transaction_detail_hash"><%= @transaction %> </h3>
           <span class="d-block mb-2 text-muted">
-            <%= BlockScoutWeb.AddressView.display_address_hash(assigns[:current_address], @transaction.from_address) %>
+            <%= BlockScoutWeb.AddressView.display_address_hash(nil, @transaction, :from) %>
             <span class="text-muted">  &rarr; </span>
-            <%= BlockScoutWeb.AddressView.display_address_hash(assigns[:current_address], @transaction.to_address) %>
+            <%= BlockScoutWeb.AddressView.display_address_hash(nil, @transaction, :to) %>
           </span>
           <div class="d-flex flex-row justify-content-start text-muted">
             <span class="mr-4 text-<%= BlockScoutWeb.TransactionView.type_suffix(@transaction) %>"><%= BlockScoutWeb.TransactionView.transaction_display_type(@transaction) %></span>

apps/block_scout_web/lib/block_scout_web/views/address_view.ex

@@ -1,7 +1,7 @@
 defmodule BlockScoutWeb.AddressView do
   use BlockScoutWeb, :view
 
-  alias Explorer.Chain.{Address, Hash, SmartContract}
+  alias Explorer.Chain.{Address, Hash, SmartContract, TokenTransfer, Transaction}
 
   @dialyzer :no_match
 
@@ -34,35 +34,30 @@ defmodule BlockScoutWeb.AddressView do
 
   def contract?(nil), do: true
 
-  def display_address_hash(current_address, target_address, truncate \\ false)
+  def display_address_hash(current_address, struct_to_render_from, direction, truncate \\ false)
 
-  def display_address_hash(nil, nil, _truncate), do: gettext("Contract Address Pending")
+  def display_address_hash(current_address, %TokenTransfer{to_address: address}, :to, truncate) do
+    display_hash(current_address, address.hash, contract?(address), truncate)
+  end
 
-  def display_address_hash(nil, target_address, truncate) do
-    render(
-      "_link.html",
-      address_hash: target_address.hash,
-      contract: contract?(target_address),
-      truncate: truncate
-    )
+  def display_address_hash(current_address, %TokenTransfer{from_address: address}, :from, truncate) do
+    display_hash(current_address, address.hash, contract?(address), truncate)
   end
 
-  def display_address_hash(current_address, target_address, truncate) do
-    if current_address.hash == target_address.hash do
-      render(
-        "_responsive_hash.html",
-        address_hash: current_address.hash,
-        contract: contract?(current_address),
-        truncate: truncate
-      )
-    else
-      render(
-        "_link.html",
-        address_hash: target_address.hash,
-        contract: contract?(target_address),
-        truncate: truncate
-      )
+  def display_address_hash(_current_address, %Transaction{to_address_hash: nil, created_contract_address_hash: nil}, :to, _truncate) do
+    gettext("Contract Address Pending")
   end
+
+  def display_address_hash(current_address, %Transaction{to_address_hash: nil, created_contract_address_hash: hash}, :to, truncate) do
+    display_hash(current_address, hash, true, truncate)
+  end
+
+  def display_address_hash(current_address, %Transaction{to_address: address}, :to, truncate) do
+    display_hash(current_address, address.hash, contract?(address), truncate)
+  end
+
+  def display_address_hash(current_address, %Transaction{from_address: address}, :from, truncate) do
+    display_hash(current_address, address.hash, contract?(address), truncate)
   end
 
   def hash(%Address{hash: hash}) do
@@ -80,6 +75,12 @@ defmodule BlockScoutWeb.AddressView do
 
   def smart_contract_verified?(%Address{smart_contract: nil}), do: false
 
+  def smart_contract_with_read_only_functions?(%Address{smart_contract: %SmartContract{}} = address) do
+    Enum.any?(address.smart_contract.abi, & &1["constant"])
+  end
+
+  def smart_contract_with_read_only_functions?(%Address{smart_contract: nil}), do: false
+
   def trimmed_hash(%Hash{} = hash) do
     string_hash = to_string(hash)
     "#{String.slice(string_hash, 0..5)}–#{String.slice(string_hash, -6..-1)}"
@@ -87,9 +88,30 @@ defmodule BlockScoutWeb.AddressView do
 
   def trimmed_hash(_), do: ""
 
-  def smart_contract_with_read_only_functions?(%Address{smart_contract: %SmartContract{}} = address) do
-    Enum.any?(address.smart_contract.abi, & &1["constant"])
+  defp display_hash(nil, hash, contract?, truncate) do
+    render(
+      "_link.html",
+      address_hash: hash,
+      contract: contract?,
+      truncate: truncate
+    )
   end
 
-  def smart_contract_with_read_only_functions?(%Address{smart_contract: nil}), do: false
+  defp display_hash(current_address, hash, contract?, truncate) do
+    if current_address.hash == hash do
+      render(
+        "_responsive_hash.html",
+        address_hash: hash,
+        contract: contract?,
+        truncate: truncate
+      )
+    else
+      render(
+        "_link.html",
+        address_hash: hash,
+        contract: contract?,
+        truncate: truncate
+      )
+    end
+  end
 end

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

@@ -10,6 +10,8 @@ defmodule BlockScoutWeb.TransactionView do
 
   defguardp is_transaction_type(mod) when mod in [InternalTransaction, Transaction]
 
+  defdelegate formatted_timestamp(block), to: BlockView
+
   def confirmations(%Transaction{block: block}, named_arguments) when is_list(named_arguments) do
     case block do
       nil -> 0
@@ -17,22 +19,19 @@ defmodule BlockScoutWeb.TransactionView do
     end
   end
 
-  def from_or_to_address?(_token_transfer, nil), do: false
-
-  def from_or_to_address?(%{from_address_hash: from_hash, to_address_hash: to_hash}, %Address{hash: hash}) do
-    from_hash == hash || to_hash == hash
-  end
-
-  # This is the address to be shown in the to field
-  def to_address_hash(%Transaction{to_address_hash: nil, created_contract_address_hash: address_hash}), do: address_hash
+  def contract_creation?(%Transaction{to_address: nil}), do: true
 
-  def to_address_hash(%Transaction{to_address: %Address{hash: address_hash}}), do: address_hash
+  def contract_creation?(_), do: false
 
   def fee(%Transaction{} = transaction) do
     {_, value} = Chain.fee(transaction, :wei)
     value
   end
 
+  def format_gas_limit(gas) do
+    Number.to_string!(gas)
+  end
+
   def formatted_fee(%Transaction{} = transaction, opts) do
     transaction
     |> Chain.fee(:wei)
@@ -43,34 +42,6 @@ defmodule BlockScoutWeb.TransactionView do
     end
   end
 
-  def gas_used(%Transaction{gas_used: nil}), do: gettext("Pending")
-
-  def gas_used(%Transaction{gas_used: gas_used}) do
-    Number.to_string!(gas_used)
-  end
-
-  def involves_contract?(%Transaction{from_address: from_address, to_address: to_address}) do
-    AddressView.contract?(from_address) || AddressView.contract?(to_address)
-  end
-
-  def involves_token_transfers?(%Transaction{token_transfers: []}), do: false
-  def involves_token_transfers?(%Transaction{token_transfers: transfers}) when is_list(transfers), do: true
-
-  def contract_creation?(%Transaction{to_address: nil}), do: true
-
-  def contract_creation?(_), do: false
-
-  def qr_code(%Transaction{hash: hash}) do
-    hash
-    |> to_string()
-    |> QRCode.to_png()
-    |> Base.encode64()
-  end
-
-  def format_gas_limit(gas) do
-    Number.to_string!(gas)
-  end
-
   def formatted_status(transaction) do
     transaction
     |> Chain.transaction_to_status()
@@ -82,7 +53,11 @@ defmodule BlockScoutWeb.TransactionView do
     end
   end
 
-  defdelegate formatted_timestamp(block), to: BlockView
+  def from_or_to_address?(_token_transfer, nil), do: false
+
+  def from_or_to_address?(%{from_address_hash: from_hash, to_address_hash: to_hash}, %Address{hash: hash}) do
+    from_hash == hash || to_hash == hash
+  end
 
   def gas(%type{gas: gas}) when is_transaction_type(type) do
     Cldr.Number.to_string!(gas)
@@ -95,23 +70,39 @@ defmodule BlockScoutWeb.TransactionView do
     format_wei_value(gas_price, unit)
   end
 
+  def gas_used(%Transaction{gas_used: nil}), do: gettext("Pending")
+
+  def gas_used(%Transaction{gas_used: gas_used}) do
+    Number.to_string!(gas_used)
+  end
+
   def hash(%Transaction{hash: hash}) do
     to_string(hash)
   end
 
-  def status(transaction) do
-    Chain.transaction_to_status(transaction)
+  def involves_contract?(%Transaction{from_address: from_address, to_address: to_address}) do
+    AddressView.contract?(from_address) || AddressView.contract?(to_address)
   end
 
-  def type_suffix(%Transaction{} = transaction) do
-    cond do
-      involves_token_transfers?(transaction) -> "token-transfer"
-      contract_creation?(transaction) -> "contract-creation"
-      involves_contract?(transaction) -> "contract-call"
-      true -> "transaction"
+  def involves_token_transfers?(%Transaction{token_transfers: []}), do: false
+  def involves_token_transfers?(%Transaction{token_transfers: transfers}) when is_list(transfers), do: true
+
+  def qr_code(%Transaction{hash: hash}) do
+    hash
+    |> to_string()
+    |> QRCode.to_png()
+    |> Base.encode64()
   end
+
+  def status(transaction) do
+    Chain.transaction_to_status(transaction)
   end
 
+  # This is the address to be shown in the to field
+  def to_address_hash(%Transaction{to_address_hash: nil, created_contract_address_hash: address_hash}), do: address_hash |> IO.inspect
+
+  def to_address_hash(%Transaction{to_address: %Address{hash: address_hash}}), do: address_hash
+
   def transaction_display_type(%Transaction{} = transaction) do
     cond do
       involves_token_transfers?(transaction) -> gettext("Token Transfer")
@@ -121,6 +112,15 @@ defmodule BlockScoutWeb.TransactionView do
     end
   end
 
+  def type_suffix(%Transaction{} = transaction) do
+    cond do
+      involves_token_transfers?(transaction) -> "token-transfer"
+      contract_creation?(transaction) -> "contract-creation"
+      involves_contract?(transaction) -> "contract-call"
+      true -> "transaction"
+    end
+  end
+
   @doc """
   Converts a transaction's Wei value to Ether and returns a formatted display value.
 

apps/block_scout_web/test/block_scout_web/views/address_view_test.exs

@@ -15,6 +15,51 @@ defmodule BlockScoutWeb.AddressViewTest do
       address = insert(:address, contract_code: nil)
       refute AddressView.contract?(address)
     end
+
+    test "with nil address" do
+      assert AddressView.contract?(nil)
+    end
+  end
+
+  describe "display_address_hash/3" do
+    test "for a pending contract creation to address" do
+      transaction = insert(:transaction, to_address: nil, created_contract_address_hash: nil)
+      assert AddressView.display_address_hash(nil, transaction, :to) == "Contract Address Pending"
+    end
+
+    test "for a non-contract to address not on address page" do
+      transaction = insert(:transaction)
+      rendered_string =
+        nil
+        |> AddressView.display_address_hash(transaction, :to)
+        |> Phoenix.HTML.safe_to_string()
+      assert rendered_string =~ "responsive_hash"
+      assert rendered_string =~ "address_hash_link"
+      refute rendered_string =~ "contract-address"
+    end
+
+    test "for a non-contract to address non matching address page" do
+      transaction = insert(:transaction)
+      rendered_string =
+        :address
+        |> insert()
+        |> AddressView.display_address_hash(transaction, :to)
+        |> Phoenix.HTML.safe_to_string()
+      assert rendered_string =~ "responsive_hash"
+      assert rendered_string =~ "address_hash_link"
+      refute rendered_string =~ "contract-address"
+    end
+
+    test "for a non-contract to address matching address page" do
+      transaction = insert(:transaction)
+      rendered_string =
+        transaction.to_address
+        |> AddressView.display_address_hash(transaction, :to)
+        |> Phoenix.HTML.safe_to_string()
+      assert rendered_string =~ "responsive_hash"
+      refute rendered_string =~ "address_hash_link"
+      refute rendered_string =~ "contract-address"
+    end
   end
 
   describe "qr_code/1" do