Update README.md

README.md

@@ -2,6 +2,8 @@
 
 This is a *quick and dirty* PHP web application that accesses google cloud datastore. The intent of this code is to demonstrate the technique only. This code, purposefully, in order to save time and effort, does not adhere to even minimum security standards (e.g., in order to quickly run the PHP code, it asks you to "chmod 777 /var/www/html" - it is your responsibility to understand the gravity of this and remove the VM as soon as you are done running the demo (or tighten things up yourself). Similarly, the code does not handle errors, does not log, and uses poor performance optimization (e.g., it does not connection-pool the datastore connection, instead it connects to Datastore every time a key is pressed).
 
+Needless to say, this code can be vastly improved. I welcome pull requests, thank you. I will, of course, put that on my backburner as well!
+
 ## How to run and test this app
 
 Let us see how you can, step by step, set up your environment and run this app as a demo
@@ -30,7 +32,15 @@ Let us see how you can, step by step, set up your environment and run this app a
 7. Copy calldatastore.php, form.html, loaddatastore.php, loaddatastore.sh, products.json into /var/www/html, use sudo as needed
 8. Test access - browse to {your IP address}/form.html - you are seeing the rudimentary front end of my PHP application. Go ahead and type something in the textbox, the output area will show error, as it will try to access Datastore, but we have not set it up yet
 9. Now, you need to add an environment variable to this VM. A good, permamnent way to do this is to edit /etc/environment and add a line to it. The line should be (without the quotes): "GOOGLE_APPLICATION_CREDENTIALS=/path/to/credentials.json" (remember you downloaded this file in the step 2 of the previous section?). If the path has spaces, put the value of the variable (i.e., the path) in double quotes. Once you save this file, you will have to log back out and in for it to take effect
-10. 
+10. cd into /var/www/html
+11. Now, we will install composer so that we can install other PHP libraries and dependencies. Inside /var/www/html, Run: "sudo curl -sS https://getcomposer.org/installer | php"
+12. Run "php composer.phar require google/auth" -> this installs the auth library needed to authenticate against the Google Cloud
+13. Run "php composer.phar require google/cloud" -> this installs the general GCP cloud library needed to access datastore
+14. If you list the contents of /var/www/html now, you will see a vendor directory created with an autoload.php file in it. if you are wondering what is PHP auto-loading, read this: http:https://ditio.net/2008/11/13/php-autoload-best-practices/
+Change the PHP code to point at *your* project instead of mine:
+ * In loaddatastore.php, change the line "$projectId = 'triple-cab-162115';" - update the value to the project id to whatever your Google Cloud Project id is (the cloud console is a good place to grab this from)
+ * Same for calldatastore.php
+15. 
 
 ### Get the code and run it