CakePHP 4 from a sub directory

Written by James McDonald

April 25, 2022

I have a default Nginx install on Ubuntu 22.04 LTS inside a Docker Container using

I want /var/www/html to remain as the root but a CakePHP 4 app to be served as follows

requests to hostname.example.com as served from /var/www/html
requests to hostname.example.com/subdir are served from /var/www/tgn/webroot

This link https://serversforhackers.com/c/nginx-php-in-subdirectory is for a laravel config. But doesn’t seem to work properly with my CakePHP 4 install.

Note: See below for the problem I found using the above config

The ApacheConf default .htaccess located in webroot contains the following

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]
</IfModule>
So this is duplicated in Nginx as follows

Nginx Configuration to Serve CakePHP 4 from Sub Directory

This config is the working config!!!

The absolute_redirect value set to off stops nginx redirecting to an external URL. By default when a request is made for http://ipaddress:8080/wms it issues a redirect to http://ipaddress/wms/ which breaks my docker config. With absolue_redirect off it redirects from http://ipaddress:8080/wms => /wms/ and keeps the ipaddress:port combination correct and only issues a relative redirect

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        root /var/www/html;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html index.php;

        server_name _;

        absolute_redirect off;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                rewrite ^ /wms/ last;
                try_files $uri $uri/ =404;
        }

        location /wms {
                index index.php;
                alias /var/www/wms/webroot;
                try_files $uri $uri/ @wms;

                location ~ \.php$ {
                        try_files $uri =404;
                        fastcgi_split_path_info ^(.+\.php)(/.+)$;
                        fastcgi_pass php:9000;
                        fastcgi_index index.php;
                        include fastcgi_params;
                        fastcgi_param PATH_INFO $fastcgi_path_info;
                        fastcgi_param SCRIPT_FILENAME $request_filename;
                }

        }

        location @wms {
                rewrite ^ /wms/index.php last;
        }

        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                fastcgi_pass php:9000;
                fastcgi_index index.php;
                include fastcgi_params;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                fastcgi_param PATH_INFO $fastcgi_path_info;
        }

        location ~ /\.ht {
                deny all;
        }
}

Partially working

This was an attempt but in this configuration it was issuing an external redirect and redirecting to port 80 instead of the original docker port due to a problem after login with it redirecting from http://10.19.23.87:6002/wms => http://10.19.23.87/wms/

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        root /var/www/html;

        # Add index.php to the list if you are using PHP
        index index.html index.htm index.nginx-debian.html index.php;

        server_name _;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                rewrite ^ /wms/ last;
                try_files $uri $uri/ =404;
        }

        location /wms {
                index index.php;
                alias /var/www/wms/webroot;
                try_files $uri $uri/ @wms;

                location ~ \.php$ {
                        try_files $uri =404;
                        fastcgi_split_path_info ^(.+\.php)(/.+)$;
                        fastcgi_pass php:9000;
                        fastcgi_index index.php;
                        include fastcgi_params;
                        #fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                        fastcgi_param PATH_INFO $fastcgi_path_info;
                        # include snippets/fastcgi-php.conf;
                        fastcgi_param SCRIPT_FILENAME $request_filename;
                        # fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
                }
        }

        location @wms {
                rewrite ^/wms/(.+)$ /wms/index.php last;
        }

        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                fastcgi_pass php:9000;
                fastcgi_index index.php;
                include fastcgi_params;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                fastcgi_param PATH_INFO $fastcgi_path_info;
        }

        location ~ /\.ht {
                deny all;
        }
}

NOT working Laravel for Hackers Config Follows

This was also causing the request to be appended. By that I mean a request to

http://10.19.23.87:6002/wms/pallets/onhand would return http://10.19.23.87:6002/wms/pallets/onhand?pallets/onhand

http://10.19.23.87:6002/wms/pallets/onhand?pallets/onhand?pallets/onhand

Until it reached the URL request length limit and NGinx returned an error

# /etc/nginx/sites-enabled/default
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

# Default server configuration
#
server {
	listen 80 default_server;
	listen [::]:80 default_server;

	root /var/www/html;

	# Add index.php to the list if you are using PHP
	index index.html index.htm index.nginx-debian.html index.php;

	server_name _;

	location / {
		# First attempt to serve request as file, then
		# as directory, then fall back to displaying a 404.
		try_files $uri $uri/ =404;
	}

	location /subdir {
		alias /var/www/tgn/webroot;
		try_files $uri $uri/ @subdir;
		location ~ \.php$ {
			include snippets/fastcgi-php.conf;
			fastcgi_param SCRIPT_FILENAME $request_filename;
			fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
		}
	}

	location @subdir {
		rewrite /subdir/(.*)$ /subdir/index.php?/$1 last;
	}

	# pass PHP scripts to FastCGI server
	# not needed if no php in /var/www/html
	# location ~ \.php$ {
	#	include snippets/fastcgi-php.conf;
	#	fastcgi_pass unix:/run/php/php8.1-fpm.sock;
	#}

	# deny access to .htaccess files, if Apache's document root
	# concurs with nginx's one
	#
	location ~ /\.ht {
		deny all;
	}
}

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