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Laravel validate form data unique

Laravel unique validation

unique:table,column,except,idColumn

############## Example : ################

############### For Updating  
//rules
'email' => 'unique:users,email_address,' . $userId,

############### For Creating 
//rules
'email' => 'unique:users,email_address',

Laravel validate form data unique

'username' => ['required', Rule::unique('users', 'username')],

Source: laracasts.com

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