10 tips for better freelancing

How to improve yourself as a freelancer? Here are 10 points to take care of:

  1. Communication Skills – convincing power
  2. Make yourself a brand, your ethics will define your future in freelancing. This will help you in scaling also
  3. Consistency, Focus and Dedication
  4. Productivity is Gold, know your value, do math and target for a monthly number
  5. Read!! know clients requirements in depth, if it is small task, fix already without getting the project. This approach will consume time without paying, but would probably make you better
  6. keep challenging yourself, keep improving
  7. Stay away from template bids, no body wants to know which app you did 4 years ago if the project not about an app
  8. Keep your portfolio updated
  9. Take care of clock, predict and quote project timelines intelligently
  10. Exceed expectations of your Client, under-promise and over-deliver

How to migrate Customers from Magento2 to WordPress?

Lets break it into 2 parts:

a. Migrate Customer data
b. Migrate Customer Passwords

1) Migrate Customer Data from Magento2 to WordPress

This is rather easy to be honest, there are several plugins for importing data from CSV and then mapping the CSV fields.

My recommended plugin is Customer/Order/Coupon CSV Import Suite by SkyVerge

It basically does everything from customer email to customer address data. It also provides column mapping and custom attribute import for all users. Also comes with multiple configuration options.

Best Free Alternative is https://wordpress.org/plugins/import-users-from-csv-with-meta
But in this one, you can not import magento2 passwords as of v 1.15.0.1
I will update about the solution very soon. So as of now only paid option is there.

2) Migrate Customer Password from Magento2 to WordPress

This wordpress plugin checks and updates passwords of users migrated from Magento2 to WordPress
Plugin Link: https://github.com/harshvardhanmalpani/migrate-password-from-magento2-to-wordpress

Requirements:

  1. user_pass column will have this kind data from Magento2 dcbdc524f215fd054502dcad5a23a702ec029c02ff8d7051d049f76e29927f8b:C8yVqeuPfkHWvkmipx0iKLPtOUGETpLL:1
  2. usermeta table must have a meta_key “migrated_cs” for this user, meta_value can be anything positive
  3. This plugin file password-migrator.php should be in wp-content/plugins and must be an active plugin

What is does?

For new wordpress based users which dont have anything to do with magento2, it doesnt do anything

For all migrated users (those have the key “migrated_cs”), this plugin checks if input password matches old password from magento2 or not, if matched, it clears the key migrated_cs and updates the password using wordpress’ algorithm ; else results false.

How to solve MySQL server gone away error Maria Db update on cPanel and WHM?

This is related to new MariaDb upgrade from 10.1.41 to 10.1.42 and also for servers which were updated from 10.2.27 to 10.2.28

Go to solution ( Special Thanks to @Valetia )

You will see errors in following formats/messages:

  • No file or input found
  • MySQL Server has gone away
  • Connection to MySQL Server failed
  • sqlstate[hy000]: general error: 2013 lost connection to mysql server during query
  • General error: 2006 MySQL server has gone away
  • ERROR 2006 (HY000): MySQL server has gone away
  • ERROR 2013 (HY000): Lost connection to MySQL server during query

Log files (/var/lib/mysql/$hostname.err) will have or can have any of these errors:

  • assertion fail /home/buildbot/buildbot/padding_for_CPACK_RPM_BUILD_SOURCE_DIRS_PREFIX/mariadb-10.2.28/storage/innobase/dict/dict0dict.cc line 1467
  • the resulting row size is greater than maximum allowed size (8126) for a record on index leaf page
  • stack_bottom = 0x0 thread_stack 0x49000 mysys/stacktrace.c:268(my_print_stacktrace)[0x5564e62807bb] sql/signal_handler.cc:209(handle_fatal_signal)[0x5564e5d4b4f5]

Other Symptoms:

/etc/init.d/mysql start
Starting MySQL/etc/init.d/mysql: line 159: kill: (10704) – No such process
[FAILED]


Solution:

yum downgrade MariaDB-* -y
whmapi1 update_updateconf RPMUP=manual UPDATES=manual

(run as root #)

This will downgrade MariaDb installation to previous version
Line 2 will cancel automatic update on WHM/CPanel installations

If you are not using WHM, use line 1 only OR you can downgrade the repository individually too

yum downgrade MariaDB-server MariaDB-common MariaDB-shared MariaDB-client MariaDB-compat MariaDB-devel

References:

A basic time difference calculator in google script js

In your Google Sheet, Click “Tools” and then choose “Script Editor“. Put the code given below. Don’t forget to use function in your result column as “=dodiff(cell1,cell2)

function dodiff(a, b) {
    if (a)
        a = fix(a);
    if (b)
        b = fix(b);
    if (Array.isArray(a) && Array.isArray(b)) {
        if (b[1] > a[1]) m = b[1] - a[1];
        else {
            m = b[1] - a[1] + 60;
            b[0]--;
        }
        if (b[0] >= a[0]) h = b[0] - a[0];
        else {
            h = b[0] - a[0] + 12;
        }
        m = m / 60;
        return (h + m).toPrecision(4);
    }
}

function fix(a) {
    if (a)
        x = a.toString().replace(" ", '').replace("am", "").replace("pm", "").replace("PM", "").replace("AM", "");
    x = x.split(":");
    x[0] = parseInt(x[0]);
    x[1] = parseInt(x[1]);
    return x;
}

How to add Facebook Messenger for live chat on your website?

How to add facebook messenger in website so that users can chat live to your page?

Requirements:

  1. Page ID – you need to know what is your page id
  2. Whitelisted Domain – you need to add website on which you want show widget in your page’s whitelist
  3. Access to add/edit code in your website

1 – Getting Page ID

Go to your page, click on about, scroll down a bit and you will see Page ID

The url will look like https://www.facebook.com/pg/YOURPAGENAME/about/?ref=page_internal

The page id will look like

Alternatively, you can use tools like Find My Facebook ID – https://findmyfbid.com/

2 – Whitelisting your domain

There are 2 ways to do this, A and B both mentioned below

A) For Page Admins, the Messenger Platform also provides an easy setup tool for customizing your customer chat plugin. To use the setup tool, do the following:

  1. Go to Page Settings > Messenger Platform
  2. In the ‘Customer Chat Plugin’ section, click the ‘Set Up’ Button.

The url will look like https://www.facebook.com/YOURPAGEUSERNAME/settings/?tab=messenger_platform

OR

B) Go to Page Settings > Messenger Platform and Jump to Whitelisted Domains section

whitelist your website url

3 – Add Code in your website

Replace PAGEID with your page id obtained in step 1

HTML CODE (includes js code also)

<div id="fb-root"></div>
<div class="fb-customerchat" attribution="setup_tool" page_id="PAGEID" logged_in_greeting="Hi! How can I help you?" greeting_dialog_display="hide" logged_out_greeting="Hi! How can I help you?" theme_color="#0084ff">
</div>
<script>
  window.fbAsyncInit = function() {FB.init({xfbml: true,
version: 'v4.0'});};
(function(d, s, id) {var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = 'https://connect.facebook.net/en_US/sdk/xfbml.customerchat.js';
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>	  

Customization Notes:

Add or edit these common attribute value pairs

greeting_dialog_display="hide" 
theme_color="#0084ff"

Details about customization: https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin#customization

References:

https://developers.facebook.com/docs/messenger-platform/discovery/customer-chat-plugin

How to change attribute dropdown type to multi-select in Magento 2?

Short Answer:

Not possible via Magento2 Admin Backend.

Solution:

You need to update eav_attribute table and edit information about backend_source, frontend_input etc.

Simple query for that is:

UPDATE `eav_attribute` SET `backend_model`="Magento\\Eav\\Model\\Entity\\Attribute\\Backend\\ArrayBackend", `backend_type`="varchar", `frontend_input`="multiselect", `source_model`=NULL WHERE `attribute_id`=YOUR_ATTRIBUTE_ID_INTEGER LIMIT 1

Replace YOUR_ATTRIBUTE_ID_INTEGER with your attribute_id like 355

Reference:

https://stackoverflow.com/a/57701845/2229148

How to disable products in Magento2 which dont have any gallery image?

UPDATE `catalog_product_entity_int` SET `value`=2 where `entity_id` in (SELECT a.`entity_id` FROM `catalog_product_entity` AS a LEFT JOIN `catalog_product_entity_media_gallery_value` AS b ON a.entity_id = b.entity_id LEFT JOIN `catalog_product_entity_media_gallery` AS c ON b.value_id = c.value_id WHERE c.value IS NULL) and `attribute_id` = 96

It is SQL query

Assumption:

value=2 means disable and value=1 means enable

attribute_id=96 means “status” attribute

References:

https://gist.github.com/tegansnyder/8464261#gistcomment-2910808

https://magento.stackexchange.com/a/83033/32283

How to batch edit multiple images to make square sized pictures with original image in center using php imagejpeg?

<?php
// WORKS FOR JPEG IMAGES ONLY. FOR PNG, change function names
// also create a folder named "out" in the $datadir folder
///only 4 lines to be edited
//1. dir in which your image files are present
$datadir="J:/dgcert/";
//2. Expected min. Width of the output file
$_outw=840;
//3. Expected min. Height of the output file
$_outh=840;
//4. output folder (inside datadir)
$outfolder= '/out/';
//5. force final size -- -- If set to 1/true then line 2 and 3 will become max sizes of output image
// TO BE DONE IN FUTURE . does not work as of now
$forcesize=0;
////// no more edits needed
$files=array_diff(scandir($datadir),array(".",".."));
foreach ($files as $file)
{
	if(is_file($datadir.'/'.$file)){		
$outw=$_outw;
$outh=$_outh;
$mugl_im= imagecreatefromjpeg($datadir.$file);
list($thiswidth, $thisheight)= getimagesize($datadir.$file);
if($outw<$thiswidth) $outw=$thiswidth;
if($outh<$thisheight) $outh=$thisheight;
if($outw<$outh)$outw=$outh;
if($outh<$outw)$outh=$outw;
//echo $width . $height;exit;
$thumb = imagecreatetruecolor($outw, $outh);
//white color rgb
$bg = imagecolorallocate ( $thumb, 255, 255, 255 );
imagefilledrectangle($thumb,0,0,$outw,$outh,$bg);
imagecopyresized($thumb,$mugl_im,ceil(($outw-$thiswidth)/2),ceil(($outh-$thisheight)/2),0,0,$thiswidth,$thisheight,$thiswidth,$thisheight);

imagejpeg($thumb,$datadir.$outfolder.$file);
imagedestroy($thumb);
imagedestroy($mugl_im);
	}
}

?>

How to wipe all the tables and data in MySQL? Clean whole database

SET FOREIGN_KEY_CHECKS = 0;
SET GROUP_CONCAT_MAX_LEN=32768;
SET @tables = NULL;
SELECT GROUP_CONCAT('`', table_name, '`') INTO @tables
  FROM information_schema.tables
  WHERE table_schema = (SELECT DATABASE());
SELECT IFNULL(@tables,'dummy') INTO @tables;
 
SET @tables = CONCAT('DROP TABLE IF EXISTS ', @tables);
PREPARE stmt FROM @tables;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
SET FOREIGN_KEY_CHECKS = 1;

Will not work via phpmyadmin or any script. this has to be run in cmd/terminal

Quick Command

wget https://gist.githubusercontent.com/harshvardhanmalpani/e670a8de7aa81673364dd48f125cb9ac/raw/ce04b319bf1594d148d3346e1474119fe1cd1b3f/flushdb.sql

mysql -hYOUR_DATABASE_HOSTNAME -uYOUR_DATABASE_USER -p YOUR_DATABASE_NAME < flushdb.sql

Source:
https://gist.github.com/harshvardhanmalpani/e670a8de7aa81673364dd48f125cb9ac