Magento2 - List of Validation Rules

List of form validation rules
jQuery rules:

required,
remote,
email,
url,
date,
dateISO,
number,
digits,
creditcard,
equalTo,
maxlength,
minlength,
rangelength,
range,
max,
min

Magento rules:

max-words
min-words
range-words
letters-with-basic-punc
alphanumeric
letters-only
no-whitespace
zip-range
integer
vinUS
dateITA
dateNL
time
time12h
phoneUS
phoneUK
mobileUK
stripped-min-length
email2
url2
credit-card-types
ipv4
ipv6
pattern
allow-container-className
validate-no-html-tags
validate-select
validate-no-empty
validate-alphanum-with-spaces
validate-data
validate-street
validate-phoneStrict
validate-phoneLax
validate-fax
validate-email
validate-emailSender
validate-password
validate-admin-password
validate-customer-password
validate-url
validate-clean-url
validate-xml-identifier
validate-ssn
validate-zip-us
validate-date-au
validate-currency-dollar
validate-not-negative-number
validate-zero-or-greater
validate-greater-than-zero
validate-css-length
validate-number
required-number
validate-number-range
validate-digits
validate-digits-range
validate-range
validate-alpha
validate-code
validate-alphanum
validate-date
validate-date-range
validate-cpassword
validate-identifier
validate-zip-international
validate-one-required
validate-state
required-file
validate-ajax-error
validate-optional-datetime
validate-required-datetime
validate-one-required-by-name
less-than-equals-to
greater-than-equals-to
validate-emails
validate-cc-type-select
validate-cc-number
validate-cc-type
validate-cc-exp
validate-cc-cvn
validate-cc-ukss
validate-length
required-entry
not-negative-amount
validate-per-page-value-list
validate-per-page-value
validate-new-password
required-if-not-specified
required-if-all-sku-empty-and-file-not-loaded
required-if-specified
required-number-if-specified
datetime-validation
required-text-swatch-entry
required-visual-swatch-entry
required-dropdown-attribute-entry
Validate-item-quantity
validate-grouped-qty
validate-one-checkbox-required-by-name
validate-date-between
validate-dob

Magento 2 - Best way to mass update attribute value of a product.

Here my code.

$productIds = [1,2,34]; // List of product Ids
$productAttribute = \Magento\Framework\App\ObjectManager::getInstance()
            ->create('Magento\Catalog\Model\ResourceModel\Product\Action');
$productAttribute->updateAttributes($productIds, 
['name' => 'New Name for all product'], // List of attribute you want to update NVP
$storeId
);

Idea gets from best-way-to-update-products-attribute-value

Laravel5 -> Creating/Understanding Custom Validation.

Main goal to create our own validation and set message associated to our validation.

*

Implented the validation rule

$RULES = ['name' => 'required|myrule'];
Vaidator::make($ARRAY_DATA, $RULES);

*

Create custom rule. In app/Providers/AppServiceProvider.php add code below on boot function.

//  Create  your custome valitor
Validator::extend('myrule', function($attr $value, $params) {
    return ((rand(10,100)%2) == 0); // Random return failed/Pass
},
"validation.myrule"
);

// Create the  message rule message.
Validator::replacer('myrule', function($msg, $attr, $rule, $params) {
    return trans($message, ['attribute'=> $attribute]);
});

*

Create the rule message. Add entry on resources/lang/en/validation.php.

return [

'myrule' => 'Your :attribute got error.',

'custom' => [
  //  Your also add here, to override the message above for the specific file.
  // This not need unless you want some validation on specific field.
  'fieldname' => [
     'rulename' => ' This just sample custom my rule message',
   ],

  'name' => [
     'myrule' => 'My custom :attribute message override.',
   ]

]
];

Magento2 - Resetting admin password.

Reseting password could get 3 possible way.

1. Run command in your server console.

MAGENTO_DIR/bin/magento admin:user:create \
--admin-user="ADMINUSERNAME" \
--admin-password="NEWPASSWORD" \
--admin-email="admin@example.com" \
--admin-firstname="Admin" --admin-lastname="Admin"

2. If you dont have access to the server, you could try updating via your database server.

UPDATE admin_user 
SET password = CONCAT(SHA2('xxxxxxxYourNewPassword', 256), ':xxxxxxx:1') 
WHERE username = 'admin';

NOTE: xxxxxx character sequence is a cryptographic salt.
it is saved in app\etc\env.php file

<?php
return array (
  ...
  'crypt' => 
  array (
    'key' => '525701df74e6cba74d5e9a1bb3d935ad', //cryptographic salt
  ),
  ...

3. Use the Forgot Password.