def get_value(self, orig_key, args, kwargs):
if not orig_key:
return ''
key = orig_key = orig_key.lower()
if (key != 'title_sort' and key not in TOP_LEVEL_IDENTIFIERS and
key not in ALL_METADATA_FIELDS):
from calibre.ebooks.metadata.book.base import field_metadata
key = field_metadata.search_term_to_field_key(key)
if key is None or (self.book and
key not in self.book.all_field_keys()):
if hasattr(self.book, orig_key):
key = orig_key
else:
raise ValueError(_('Value: unknown field ') + orig_key)
try:
b = self.book.get_user_metadata(key, False)
except:
b = None
if b and ((b['datatype'] == 'int' and self.book.get(key, 0) == 0) or
(b['datatype'] == 'float' and self.book.get(key, 0.0) == 0.0)):
v = ''
else:
v = self.book.format_field(key, series_with_index=False)[1]
if v is None:
return ''
if v == '':
return ''
return v
def get_value(self, orig_key, args, kwargs):
if not orig_key:
return ''
key = orig_key = orig_key.lower()
if (key != 'title_sort' and key not in TOP_LEVEL_IDENTIFIERS
and key not in ALL_METADATA_FIELDS):
from calibre.ebooks.metadata.book.base import field_metadata
key = field_metadata.search_term_to_field_key(key)
if key is None or (self.book
and key not in self.book.all_field_keys()):
if hasattr(self.book, orig_key):
key = orig_key
else:
raise ValueError(_('Value: unknown field ') + orig_key)
try:
b = self.book.get_user_metadata(key, False)
except:
b = None
if b and (
(b['datatype'] == 'int' and self.book.get(key, 0) == 0) or
(b['datatype'] == 'float' and self.book.get(key, 0.0) == 0.0)):
v = ''
else:
v = self.book.format_field(key, series_with_index=False)[1]
if v is None:
return ''
if v == '':
return ''
return v