Django-Tables2-如何为所有列设置默认值？

Question

Django-tables2 renders double dash in case there is no value in the cell. We can change it explicitely specifying default attribute for every column.

Can I do that for all columns at once?

Of course I tried to override __init__ method but Table.columns can't be modified and Table.base_columns seems to cause the same problem.

def __init__(self,*args,**kwargs):
    for name,col in self.base_columns.items():
        col.default = ''

    super(DopytyTable,self).__init__(*args,**kwargs)

raises

 col.default = '' AttributeError: can't set attribute 

Answer 1

I haven't figured out how to modify columns inside __init__ method but there is even more simple way to do that. Unfortunately it isn't documented but it works correctly for me.

Just add default attribute to class Meta :

class Table(Table):
    class Meta:
        default = ''