55     label = models.CharField(max_length=2048, blank=True, null=True, db_index=True) # filled from sparql request after import

    55     label = models.CharField(max_length=2048, blank=True, null=True, db_index=True) # filled from sparql request after import

    56 

    56 

    57 

    57 

    58 class Country(P4lModel):

    58 class Country(P4lModel):

    59     country = models.URLField(max_length=2048, unique=True, db_index=True)

    59     country = models.URLField(max_length=2048, unique=True, db_index=True)

    60 

    61 

    61 

    62 

    62 class Isbn(P4lModelLang):

    63 class Isbn(P4lModelLang):

    63     record = models.ForeignKey('p4l.Record', related_name="isbns")

    64     record = models.ForeignKey('p4l.Record', related_name="isbns")

    64     isbn = models.CharField(max_length=128) #iiep:isbn

    65     isbn = models.CharField(max_length=128) #iiep:isbn

    72     record = models.ForeignKey('p4l.Record', related_name="documentCodes")

    73     record = models.ForeignKey('p4l.Record', related_name="documentCodes")

    73     documentCode = models.CharField(max_length=128) #iiep:issn

    74     documentCode = models.CharField(max_length=128) #iiep:issn

    74 

    75 

    75 class Language(P4lModel):

    76 class Language(P4lModel):

    76     language = models.URLField(max_length=2048, unique=True, db_index=True)

    77     language = models.URLField(max_length=2048, unique=True, db_index=True)

    77 

    79 

    78 

    80 

    79 

    81 

    80 class BaseTitle(P4lModelLang):

    82 class BaseTitle(P4lModelLang):

    81     title = models.CharField(max_length=2048, blank=False, null=False, db_index=True)

    83     title = models.CharField(max_length=2048, blank=False, null=False, db_index=True)