docs: add changelog and upgrade

codeigniter4 · Sep 27, 2023 · 35d1531 · 35d1531
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diff --git a/user_guide_src/source/changelogs/v4.5.0.rst b/user_guide_src/source/changelogs/v4.5.0.rst
@@ -24,9 +24,17 @@ Behavior Changes
 Interface Changes
 =================
 
+.. _v450-method-signature-changes:
+
 Method Signature Changes
 ========================
 
+Return Type Changes
+-------------------
+
+- **Model:** The return type of the ``objectToRawArray()`` method in the ``Model``
+  and ``BaseModel`` classes has been changed to ``array``.
+
 .. _v450-removed-deprecated-items:
 
 Removed Deprecated Items

diff --git a/user_guide_src/source/installation/upgrade_450.rst b/user_guide_src/source/installation/upgrade_450.rst
@@ -18,11 +18,18 @@ Mandatory File Changes
 Breaking Changes
 ****************
 
+Method Signature Changes
+========================
+
+Some method signature changes have been made. Classes that extend them should
+update their APIs to reflect the changes. See :ref:`ChangeLog <v450-method-signature-changes>`
+for details.
+
 Removed Deprecated Items
 ========================
 
 Some deprecated items have been removed. If you extend these classes and are
-using them, upgrade your code. See :ref:`v450-removed-deprecated-items` for details.
+using them, upgrade your code. See :ref:`ChangeLog <v450-removed-deprecated-items>` for details.
 
 Breaking Enhancements
 *********************