Change pending transaction conditions

lib/explorer_web/controllers/pending_transaction_controller.ex

@@ -11,11 +11,14 @@ defmodule ExplorerWeb.PendingTransactionController do
     query =
       from(
         transaction in Transaction,
-        left_join: receipt in assoc(transaction, :receipt),
         inner_join: to_address in assoc(transaction, :to_address),
         inner_join: from_address in assoc(transaction, :from_address),
         preload: [to_address: to_address, from_address: from_address],
-        where: is_nil(receipt.transaction_id),
+        where:
+          fragment(
+            "NOT EXISTS (SELECT true FROM receipts WHERE receipts.transaction_id = ?)",
+            transaction.id
+          ),
         where: transaction.id < ^last_seen,
         order_by: [desc: transaction.id],
         limit: 10
@@ -24,8 +27,11 @@ defmodule ExplorerWeb.PendingTransactionController do
     total_query =
       from(
         transaction in Transaction,
-        left_join: receipt in assoc(transaction, :receipt),
-        where: is_nil(receipt.transaction_id),
+        where:
+          fragment(
+            "NOT EXISTS (SELECT true FROM receipts WHERE receipts.transaction_id = ?)",
+            transaction.id
+          ),
         order_by: [desc: transaction.id],
         limit: 1
       )
@@ -55,8 +61,11 @@ defmodule ExplorerWeb.PendingTransactionController do
       from(
         transaction in Transaction,
         select: transaction.id,
-        left_join: receipt in assoc(transaction, :receipt),
-        where: is_nil(receipt.transaction_id),
+        where:
+          fragment(
+            "NOT EXISTS (SELECT true FROM receipts WHERE receipts.transaction_id = ?)",
+            transaction.id
+          ),
         order_by: [desc: transaction.id],
         limit: 1
       )