Bugfixes

You can expect the following changes in 3.1.2. See the [changelog](https://cakephp.org/changelogs/3.1.2) for every commit.

• Contained associations now add column typ data into queries. This means that you can use complex datatypes like DateTime objects in conditions for association columns.
• XHR requests with query strings that are converted into requestAction calls by RequestHandlerComponent now work as expected.
• Hash::extract() compatibility with ArrayAccess objects was improved.
• Case expressions in queries no longer mishandle ‘0’.
• debug() no longer elides ‘schema’ and ‘prefix’.
• Validation::datetime() now accepts ‘,’ between the date and time components. This makes validating en_US formatted dates easier.
• Rendering issues in the ProgressHelper have been fixed.
• clone on Query objects now creates a deep clone as one would expect.
• Corrected API documentation.

Enhancements

• HasMany associations now support a ‘replace’ save mode. In this mode, existing associations not in the entity’s current property will be removed. New records will also be inserted.
• IntegrationTestCase now provides enableCsrfToken() and enableSecurityToken() methods to make testing with CsrfComponent and SecurityComponent much simpler.
• The CSRF token post field is now removed from request data after being validated. This makes ‘Post Redirect Get’ workflows simpler as the CSRF token doesn’t need to be manually removed.
• NetworkSocket now supports all standard SSL context options via prefixing. e.g ssl_verify_peer. These options can also be configured in the SmtpTransport.
• Test Fixture constraint management has been greatly improved. You no longer need to carefully order fixtures to ensure constraints are applied correctly. Instead constraints are created after all tables and records have been created.
• When preparing datatypes for SQL statements, exceptions will now be raised on invalid values instead of silent failures.

As always, a huge thanks to all the community members that helped make this release happen by reporting issues and sending pull requests.

Download a [packaged release on github](https://github.com/cakephp/cakephp/releases).