I hope you take something away...

Problem:

I was just learning VueJS and wrote a method to get some JSON data but I noticed that the current session of the user was not sent with the call. My code is as follows

Problem:

I face an uncommon situation where I needed to get the order by the user who is the customer (or the person who ordered the item) and I also had the id of the product i purchased. Usually what happens is we need to find 

• What oreders were done by the users
• What products (commerce_products) are in the order etc:-...

Solution:

I had 2 approaches 

Problem:

I need to chnage the location of an enabled/installed drupal module

Solution:

Easy change the module location Ex (sites/all/modules --->>> sites/all/modules/contrib). 

Run the following commands

• drush php-eval 'registry_rebuild();'
• drush updb -n.
• drush cc all

Thats it NO MORE ERROR MESSAGES .....!!!!

Problem : How does hook_update_n work in Drupal.

Why we use it: We want to perform a change on a website that is already live. We cannot uninstall and re-enable the module. So we add a hook_update_n

Solution

Well Idealy its all about the naming of the hook SO it goes like this

mymodulename_update_7002
what is 7002?

Problem : Why would developers use self:: and static:: in PHP OO classes

Solution

Well consider the below code

class Foo
{
    protected static $bar = 1234;

    public static function instance()
    {
        echo self::$bar;
        echo "\n";
        echo static::$bar;
    }

}

Foo::instance();

The output will have no difference

 

1234

1234 

But actually there is a difference when using self:: and static::

Problem:

start postgresql as usual

 

pg_ctl -w -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

Output :

 

waiting for server to start.... stopped waiting
pg_ctl: could not start server
Examine the log output. 

Open the log file to identify the problem

vi /usr/local/var/log/server.log 

Log file error 

Problem: I have a field in my schema that needs to have a value but I cannot make the user input the value in the form. I have to insert it when I am saving the object instance in the database. I can assign a value for this field using the user entered data in the form. How can I do this

Example: For examples sake say I have a filed called FullName, which I have to assign using the user inputs FirstName and LastName.

So basically  FullName = FirstName + " " + LastName.

Solution: Use a event listner  provided by the formBuilder object.

Problem

You have frontend application using a web service to get resources and is running on a gulp/grunt server.

Issues are:

• You will come across CORS errors
• You will have no userfriendly URLS (you will have something like localhost:9090).

How to get rid of these problems?

Easy, just use a NGINX proxy. Here is how

Assumptions: 

You might have seen the new users experience that Drupal 8 provides. Its provides on the fly block placement and menu configuration. The new experience is called "The outside in experience". Read more about it here. SO however if you are wondering how you can get hands on experience you need to do the following.

Pre-requisites:

You will need to update to Drupal 8.2.0

Modules to enable:

Place Blocks module