Convert condition operators to predicate functions for CakePHP 6

README.md

@@ -166,3 +166,22 @@ To install dev-dependencies use `composer setup`. Then you will be able to
 run `composer test` and `composer cs-check` etc.
 
 See also `Makefile` for more shortcut commands.
+
+### CakePHP 6 condition predicates
+
+The `cakephp60` ruleset replaces operator-bearing query condition keys with
+namespaced predicates, for example `'id >' => $minimum` becomes
+`'id' => greaterThan($minimum)` with a grouped `use function` declaration. Plain equality and boolean
+arrays remain supported, as does the fluent expression builder.
+
+Conversions are limited to known CakePHP condition consumers. Inline conditions,
+callback return arrays, and local arrays whose reads are exclusively condition
+arguments can be converted. Repeated fields are kept in separate nested arrays.
+Nullable `IS` and `IS NOT` use `equals()` and `notEquals()`, preserving their runtime choice
+between a null check and an ordinary comparison. Custom recognized operators use
+`comparison()`, whose operator argument remains trusted SQL.
+
+Review dynamically constructed keys, shared condition/configuration arrays,
+arrays assembled incrementally, and custom condition consumers manually. The rule
+leaves ambiguous arrays unchanged rather than changing unrelated application data.
+Run the tool before upgrading application dependencies to CakePHP 6.

config/rector/sets/cakephp60.php

@@ -3,6 +3,7 @@
 
 use Cake\Upgrade\Rector\Cake6\BinaryColumnToVarbinaryRector;
 use Cake\Upgrade\Rector\Cake6\BreadcrumbsHelperTitleToContentRector;
+use Cake\Upgrade\Rector\Cake6\ConditionOperatorsToPredicatesRector;
 use Cake\Upgrade\Rector\Cake6\EventManagerOnRector;
 use Cake\Upgrade\Rector\Cake6\RemoveAssignmentFromVoidMethodRector;
 use Cake\Upgrade\Rector\Cake6\ReplaceCommandArgsIoWithPropertiesRector;
@@ -25,6 +26,8 @@
 
 # @see https://book.cakephp.org/6/en/appendices/6-0-migration-guide.html
 return static function (RectorConfig $rectorConfig): void {
+    $rectorConfig->rule(ConditionOperatorsToPredicatesRector::class);
+
     // EventManager::on() signature change
     $rectorConfig->rule(EventManagerOnRector::class);