#36809: Allow EmailValidator to customize error messages depending on the part 
that
failed validation
-------------------------------------+-------------------------------------
     Reporter:  Daniel E Onetti      |                    Owner:  jaffar
         Type:                       |  Khan
  Cleanup/optimization               |                   Status:  assigned
    Component:  Core (Other)         |                  Version:  dev
     Severity:  Normal               |               Resolution:
     Keywords:  EmailValidator       |             Triage Stage:  Accepted
    Has patch:  1                    |      Needs documentation:  1
  Needs tests:  1                    |  Patch needs improvement:  1
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Comment (by jaffar Khan):

 Thanks Mike for the review. I think defining subclass is not a good option
 which makes duplication of code as you describe. Defining explicit methods
 like I did will makes the code more readable and will avoid duplication.
 In my current PR I made some changes like the methods
 **validate_domain()** and **validate_username()** will return boolean so
 we need to wrap the methods inside **__call__**. Now I am confused about
 do I have to make these two methods to raise **ValidationError** then no
 need for wrapping inside **__call__** or left as it is?
-- 
Ticket URL: <https://code.djangoproject.com/ticket/36809#comment:13>
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