Nginx Alias is not serving the right path - nginx

Question

I'm not getting through this.
My server is app.local and I need to respond to:
http://app.local/api/v1/
I need to configure my nginx to serve files placed in:
/app/api/code
So the filesystem is not reflecting the http request form.
CURRENT VERSION
server {
server_name app.local;
index index.php;
location /api/v1 {
alias /app/api/v1/code;
try_files $uri /api/v1/index.php$is_args$args;
location ~ \.php$ {
try_files $uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass api-v1-php:9000;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_param SCRIPT_FILENAME $request_filename;
}
}
}
Ok, if I remove the outer try_files it seems to find the index.php, BUT i lose some functionality (I need to redirect every path to the index handler). How can I solve this? Is this a bug?
SOLUTION
This post had the solution: https://stackoverflow.com/a/35102259/2373113
UPDATED VERSION
server {
server_name app.local;
index index.php;
location /api/v1/ {
alias /app/api/v1/code/;
try_files $uri $uri/ /api/v1//api/v1/index.php$is_args$args;
location ~ /api/v1/.+\.php$ {
try_files $uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass api-v1-php:9000;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_NAME $fastcgi_script_name;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_param SCRIPT_FILENAME $request_filename;
}
}
}