user_guide_src/source/installation/upgrade_434.rst
############################## Upgrading from 4.3.3 to 4.3.4 ##############################
Please refer to the upgrade instructions corresponding to your installation method.
Composer Installation App Starter Upgrading <app-starter-upgrading>Composer Installation Adding CodeIgniter4 to an Existing Project Upgrading <adding-codeigniter4-upgrading>Manual Installation Upgrading <installing-manual-upgrading>.. contents:: :local: :depth: 2
Breaking Changes
ChangeLog v4.3.4 <v434-redirect-status-code> and if the code is not
what you want, :ref:specify status codes <response-redirect-status-code>.A bug fix may have changed the NULL constraint in the result of
:ref:$forge->modifyColumn() <db-forge-modifyColumn>. See
:ref:Change Log <v434-forge-modifycolumn>.
To set the desired NULL constraint, change Forge::modifyColumn() to always
specify the null key.
Note that the bug may have changed unexpected NULL constraints in previous versions.
Project Files
Some files in the project space (root, app, public, writable) received updates. Due to these files being outside of the system scope they will not be changed without your intervention.
There are some third-party CodeIgniter modules available to assist with merging changes to
the project space: Explore on Packagist <https://packagist.org/explore/?query=codeigniter4%20updates>_.
The following files received significant changes (including deprecations or visual adjustments) and it is recommended that you merge the updated versions with your application:
This is a list of all files in the project space that received changes; many will be simple comments or formatting that have no effect on the runtime: