Python v Wordpress

Načeloma imaš dve možnosti.

Prvo da imaš strežnik tam kjer imaš wordpress da ima python in si enostavo narediš php skripto katera executa .py oziroma tvoj program in prebere output.

Druga pa da si v pythonu narediš manjši rest api (Flask) in potem na api kličeš z wordpressa.

zakaj ne bi "nek easy program" raje naredil v phpju?

kaj pa python kot cgi ala old school forme?

Prvo potrebuješ API, ki bo za input izpisal output.

Npr.:
www.host.com/kalkulator.py/?action=plus...


Install

nginx
apt-get install nginx
nginx - small, powerful, scalable web/proxy server

uwsgi
apt-get install uwsgi
uwsgi - fast, self-healing application container server


Najprej namestiš nginx. Nato uwsgi.

nginx config:

server {
    listen 80;
    server_name = www.host.com;
    root = "/var/www/www.host.com/";

    location / {
        try_files $uri =404;
        include uwsgi_params;
        uwsgi_modifier1 9;
        uwsgi_pass 127.0.0.1.5000;
	}
}

Sam uwsgi nastaviš tako, da dela na portu 5000, za zgornji root path.

[uwsgi]
plugins = cgi
socket = 127.0.0.1:5000
cgi = /var/www/www.host.com/
cgi-allowed-ext = .py
cgi-helper = .py = python3.5
processors = 2
threads = 4
# <-- this is a comment

Poti do config fajlov:
nginx = /etc/nginx/sites-available/
uwsgi = /etc/uwsgi/apps-available/

Da postane config "live", mora bit narejen link iz x-available v x-enabled in service restartan.

ln -s /etc/nginx/sites-available/www.host.com /etc/sites-enabled/
ln -s /etc/uwsgi/apps-availabe/www.host.com /etc/uwsgi/apps-enabled/

Linke se vidi:
cd /etc/nginx/sites-enabled
ls -l

Service x start/stop/status
service nginx status

Test nginx configa pred restartom
nginx -t

Network listening ports
netstat -anotlp


Ko imaš to, v root folder (/var/www/www.host.com) shraniš kalkulator.py file. Začetna srkitpa, ki prebere vhodne parametre in jih izpiše.

Primer:

#!/usr/bin/python3.5

import os;

# print header
print("Content-Type: text/plain; charset=utf-8;");
print("");

# print env variables
for par in os.environ.keys():
    print(str(par) + "=" + os.environ[par]);
    # <-- kalkulator....
    action = "plus";
    if action == "plus":
        val1 = 10;
        val2 = 5;
        sum = val1 + val2;
        print("sum=" + str(sum));
    print("---");

Ta skripta vrne text/html, env values in "sum=15".


V samem HTMLju pa je potrebno vključit JS skripto, ki naredi HTTP GET request na zgornji URL, in nekako sparsa vrnjene vrednosti, ter jih zapiše v HTML element.

JS skripta, ki ob zagonu naredi tak request in izpiše response v message box:

document.addEventListener('DOMContentLoaded', function() {

    var kalkulator = "http://www.host.com/kalkulator.py/?action=plus&val1=10&val2=5";

    var xhr = new XMLHttpRequest();
    xhr.withCredentials = false;
    xhr.open("GET", kalkulator, true);
    xhr.timeout = 3000;

    xhr.onreadystatechange = function () {
        if (xhr.readyState == XMLHttpRequest.DONE) {
            if (xhr.status == "200") {
                response = xhr.response.toString().trim();
                window.alert(response);
                // write response to HTML element....
            };
        };
    };

    xhr.ontimeout = function (e) { window.alert("Time out"); };
    xhr.onerror = function (e) { window.alert("Error"); };
    xhr.onabort = function (e) { window.alert("Abort"); };
    xhr.send(null);
});

Za drebug JS kode uporabi F12 v brskalniku.


Ko imaš to, lahko tako funkcionalnost (JS link) uvoziš v WP.