python - Django: How to model a MySQL VARBINARY HEX Field? -

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I am trying to model a VARBINARY MySQL field in Django v1.1.1. Binary field represents a hexadecimal data (i.e. any one will use INSERT INTO test (bin_val) VALUES X'4D7953514C ')

Reading Django document [1] I came With this solution: 

  class MyTest (models.Model): bin_val = BinValField () class BinValField (models.Field): __metaclass__ = models.SubfieldBase def to_python (self, value): " "Db -> For the value of the byte ('% x% X'% ((ord (byte))> 4) & amp; 0xF, ord (byte) and 0xF)) Def ('' Latin 1 '') )

However, this does not work correctly because

  • Django makes a Unicode change of binary data from MySQL
  • When saving a new MyTest object, called get_db_prep_value () twice (I think this is a bug in Django?)

The question is How would you prepare such an area?

PS: Related to this problem The ticket is [2] which has still been opened after 3 years: (

[1] Django: Writing custom model field

[2]

The problem creates jezos database tables and was also related

  • The table charset The code has been changed to utf8 and .
  • VARCHAR < / Code> to VARBINARY in the MySQL table
  • has been changed> To_python method return hexlif (value)

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