magento2.3.2 – Magento 2.3 Customer Shipping Address Custom Attribute Error saving the value in the database from the cash register

I'd like to add a custom billing address field and use the tutorial below for reference

Magento 2 Add extra billing or shipping field to the checkout

Everything is working well. However, the entered value is not stored in the database and is not displayed here.

Any help would be appreciated || very urgent

thank you for reading


Computer Networks – How do web browsers discover the MAC address?

As I read my textbook, I noticed that your web browser is discovering the IP address of the web server hosting the webpage and trying to connect to it if you want to access a particular webpage. Then a copy of the web page will be transferred to your computer so that you can view it.

However, I have noticed that the IP address allows sending data to the device's local area network. However, in order for the data to be sent to the device itself, the MAC address required for data transfer is the local network to the device.

BUT in my textbook is nowhere, as the web browser of the computer determines the MAC address of the web server. The computer determines the IP address of the Web server by using the Domain Name System (DNS).

How does the computer determine the MAC address of the server?

Answers would be very grateful.

IPv6 address in the SSL certificate

Is it even possible to get an SSL certificate for an IPv6 address? https://(1234:5678:9000:abcd:9876:5432:10ab:cdef)? If so, are there examples of such use? For example, setting up a personal root CA and installing it on devices is a plausible option in this case.

This question is similar to the following question: "SSL certificate for a public IP address?"

  • I'm asking for IPv6 SSL certificates
  • I only ask if it is possible to create these certificates, and not how this can be achieved (though an explanation of how this would be desirable).

Create a Gmail filter to delete all emails sent to this Gmail address

I need to write a Gmail filter that will delete all emails coming in to Gmail in my Gmail Inbox. I must make an exception for answers that come from accepting or declining a calendar invitation.

This is what I have so far (I am using an example Gmail address and domain, therefore the use of .invalid):

Matches: {to:richard.surname@gmail.invalid to:richardsurname@gmail.invalid} -from:google -filename:ics -filename:vcs
Do this: Delete it

Is there a better way to do this?

Further information / justification

I own my own domain (richard.invalid) for which a number of e-mail aliases have been set up. One of them (me@richard.invalid) refers to my gmail address (richard.surname@gmail.invalid). When I reply to an e-mail, I've configured Gmail to send e-mail from me@richard.invalid,

That works great.

However, there are at least 10 people in the world who blindly enter richard.surname@gmail.invalid or richardsurname@gmail.invalid as their own email address, even though they do not actually have access to it. After responding to emails for years and trying to educate those people, I gave up and wanted to delete everything sent to those addresses.

The only problem I have is that Google Calendar always sends invitations from my Gmail address. Therefore, I need to add an exception to my filter to make sure that responses to it are not accidentally deleted. This is not ideal, but I always send invitations to my other half.

Since I own the domain for many years, I never send emails from richard.surname@gmail.invalid Therefore, I do not expect that any legitimate e-mail will ever be sent to you.

I am using the free version of Gmail, not GSuite.

Hide Safari address bar as part of iOS 13. Workaround for minimal ui?

I know that there have been many contributions to this topic, but I still do not have a solid answer. With the upcoming iOS 13 I would like to know if there is a way to hide the URL address bar. Our product uses the native Safari browser to display PDF files. However, I do not want the URL to be displayed (as our documents are stored in Firebase and the URI of our Firebase address should not be displayed).

I found this link (among many) talking about Apple's minimal UI (used in iOS 8), but it seems to be gone. Any thoughts on how to use something similar in iOS 13? A workaround maybe?

Address Generation – How to properly accept USDT payments?

We are developing an ecommerce solution and checking that USDT accepts payments.

As far as I know, we can currently generate many addresses (1 per transaction) using the BIP32 approach. Based on the Omni specification, we seem to need to send money from each address to a different address (eg, Master Wallet) in order to withdraw or trade the full amount received.

While the Bitcoin block chain allows generating transactions with multiple inputs (so that many inputs can send 1 tx) to one or more outputs, Omni does not support this.

So the question is how to do it right. Sending from one address to another costs BTC charges that add extra cost (for example, 1M transactions mean 1M charge for address X).

How can I refund money I sent to an address?

Depend on who sent you (assuming it is a merchant) and what software they use. For some merchant apps, the address may be reusable and the funds may continue to be received.

A. You have used a merchant app that only allows the address to be used once: I assume you are unlucky. In this case, the bitcoin that you sent is essentially passed on to the merchant app developers (no bitcoin is sent to anyone unless the address is unlikely in this situation). it is gone, unless the destination refunds it directly to you)

B. You use a merchant app that allows multiple uses of the address, or better, the Bitcoin wallet: You can check the previous address and see if any additional amounts have been added, and request a refund, if applicable.

The Google search index lists the IP address of my old server instead of my domain name

This question already has an answer here:

My two-year-old website was indexed and the search result was listed as usual for domain names in Google search results for a long time. However, server IPs have recently been changed, which may not be the cause, but Google now lists some of my pages under my old IP address in the search results, as well as many of my pages under their domain like all of these millennia by default.

How do I fix this when Google ruins my mark by indexing dead links?

And how can I not be afraid of it in the future? Domain names exist so we can change the IPs.