Truncates a string after a certain number of chars.
Question:
Why don't you use the built-in filter slice?
I need the "three points" (...) only when it really truncates.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | from django import template
from django.template.defaultfilters import stringfilter
register = template.Library()
@register.filter(name='truncatechars')
@stringfilter
def truncatechars(value, arg):
"""
Truncates a string after a certain number of chars.
Argument: Number of chars to truncate after.
"""
try:
length = int(arg)
except ValueError: # Invalid literal for int().
return value # Fail silently.
if len(value) > length:
return value[:length] + '...'
return value
truncatechars.is_safe = True
|
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Comments
An interesting feature would be if it only cuts whole words - like truncatewords but for chars (length then becomes the maximum length including ...)
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