redirect a path to https in nginx code example

Example 1: How to redirect a request from http to https using nginx

server {

    listen 80 default_server;


    server_name _;


    return 301 https://$host$request_uri;

}

Example 2: how to redirect if http to https nginx

# WPSINGLE FAST CGI NGINX CONFIGURATION

server {
        listen 80;
        listen 443 ssl;
        server_name devly.co www.devly.co;
        ssl on;
        ssl_certificate /var/www/devly.co/cert/ssl-bundle.crt;
        ssl_certificate_key /var/www/devly.co/cert/devly_co.key;
        access_log   /var/log/nginx/devly.co.access.log rt_cache;
        error_log    /var/log/nginx/devly.co.error.log;
        root /var/www/devly.co/htdocs;
        index index.php index.htm index.html;

        include common/wpfc.conf;
        include common/wpcommon.conf;
        include common/locations.conf;

# force https-redirects
    if ($scheme = http) {
        return 301 https://$server_name$request_uri;
}


}