Replaced querying the accounts later with the "selectinload" query option in the journal and search reports, and restored the lazy setting in the account relationship of the JournalEntry data model.

src/accounting/models.py

@@ -617,7 +617,7 @@ class JournalEntry(db.Model):
                                          onupdate="CASCADE"),
                            nullable=False)
     """The account ID."""
-    account = db.relationship(Account, back_populates="entries")
+    account = db.relationship(Account, back_populates="entries", lazy=False)
     """The account."""
     summary = db.Column(db.String, nullable=True)
     """The summary."""

src/accounting/report/reports/journal.py

@@ -22,6 +22,7 @@ from decimal import Decimal
 
 import sqlalchemy as sa
 from flask import render_template, Response
+from sqlalchemy.orm import selectinload
 
 from accounting import db
 from accounting.locale import gettext
@@ -64,6 +65,7 @@ class ReportEntry:
         """The amount."""
         if entry is not None:
             self.entry = entry
+            self.account = entry.account
             self.summary = entry.summary
             self.debit = entry.amount if entry.is_debit else None
             self.credit = None if entry.is_debit else entry.amount
@@ -161,15 +163,11 @@ def populate_entries(entries: list[ReportEntry]) -> None:
     transactions: dict[int, Transaction] \
         = {x.id: x for x in Transaction.query.filter(
            Transaction.id.in_({x.entry.transaction_id for x in entries}))}
-    accounts: dict[int, Account] \
-        = {x.id: x for x in Account.query.filter(
-           Account.id.in_({x.entry.account_id for x in entries}))}
     currencies: dict[int, Currency] \
         = {x.code: x for x in Currency.query.filter(
            Currency.code.in_({x.entry.currency_code for x in entries}))}
     for entry in entries:
         entry.transaction = transactions[entry.entry.transaction_id]
-        entry.account = accounts[entry.entry.account_id]
         entry.currency = currencies[entry.entry.currency_code]
 
 
@@ -218,7 +216,8 @@ class Journal(BaseReport):
                 .query(JournalEntry).join(Transaction).filter(*conditions)
                 .order_by(Transaction.date,
                           JournalEntry.is_debit.desc(),
-                          JournalEntry.no).all()]
+                          JournalEntry.no)
+                .options(selectinload(JournalEntry.account)).all()]
 
     def csv(self) -> Response:
         """Returns the report as CSV for download.

src/accounting/report/reports/search.py

@@ -22,6 +22,7 @@ from decimal import Decimal
 
 import sqlalchemy as sa
 from flask import Response, render_template, request
+from sqlalchemy.orm import selectinload
 
 from accounting.locale import gettext
 from accounting.models import Currency, CurrencyL10n, Account, AccountL10n, \
@@ -67,7 +68,8 @@ class EntryCollector:
             except ArithmeticError:
                 pass
             conditions.append(sa.or_(*sub_conditions))
-        return [ReportEntry(x) for x in JournalEntry.query.filter(*conditions)]
+        return [ReportEntry(x) for x in JournalEntry.query.filter(*conditions)
+                .options(selectinload(JournalEntry.account))]
 
     @staticmethod
     def __get_account_condition(k: str) -> sa.Select: