publik: add mathematic filters + split (#66993)
split, decimal, add, substract, multiply, divide, ceil, floor, abs, sum
This commit is contained in:
Lauréline Guérin
parent
c71350052e
commit
a08f263abd
|
|
@ -14,8 +14,14 @@
|
|||
# You should have received a copy of the GNU Affero General Public License
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
import math
|
||||
from decimal import Decimal
|
||||
from decimal import DivisionByZero as DecimalDivisionByZero
|
||||
from decimal import InvalidOperation as DecimalInvalidOperation
|
||||
|
||||
from django import template
|
||||
from django.template import defaultfilters
|
||||
from django.utils.encoding import force_text
|
||||
|
||||
register = template.Library()
|
||||
|
||||
|
|
@ -48,6 +54,11 @@ def as_list(obj):
|
|||
return list(obj)
|
||||
|
||||
|
||||
@register.filter
|
||||
def split(string, separator=' '):
|
||||
return (force_text(string) or '').split(separator)
|
||||
|
||||
|
||||
@register.filter
|
||||
def first(value):
|
||||
try:
|
||||
|
|
@ -62,3 +73,89 @@ def last(value):
|
|||
return defaultfilters.last(value)
|
||||
except TypeError:
|
||||
return ''
|
||||
|
||||
|
||||
def parse_decimal(value, default=Decimal(0)):
|
||||
if isinstance(value, str):
|
||||
# replace , by . for French users comfort
|
||||
value = value.replace(',', '.')
|
||||
try:
|
||||
return Decimal(value).quantize(Decimal('1.0000')).normalize()
|
||||
except (ArithmeticError, TypeError):
|
||||
return default
|
||||
|
||||
|
||||
@register.filter(is_safe=False)
|
||||
def decimal(value, arg=None):
|
||||
if not isinstance(value, Decimal):
|
||||
value = parse_decimal(value)
|
||||
if arg is None:
|
||||
return value
|
||||
return defaultfilters.floatformat(value, arg=arg)
|
||||
|
||||
|
||||
@register.filter
|
||||
def add(term1, term2):
|
||||
'''replace the "add" native django filter'''
|
||||
|
||||
if term1 is None:
|
||||
term1 = ''
|
||||
if term2 is None:
|
||||
term2 = ''
|
||||
term1_decimal = parse_decimal(term1, default=None)
|
||||
term2_decimal = parse_decimal(term2, default=None)
|
||||
|
||||
if term1_decimal is not None and term2_decimal is not None:
|
||||
return term1_decimal + term2_decimal
|
||||
if term1 == '' and term2_decimal is not None:
|
||||
return term2_decimal
|
||||
if term2 == '' and term1_decimal is not None:
|
||||
return term1_decimal
|
||||
return defaultfilters.add(term1, term2)
|
||||
|
||||
|
||||
@register.filter
|
||||
def subtract(term1, term2):
|
||||
return parse_decimal(term1) - parse_decimal(term2)
|
||||
|
||||
|
||||
@register.filter
|
||||
def multiply(term1, term2):
|
||||
return parse_decimal(term1) * parse_decimal(term2)
|
||||
|
||||
|
||||
@register.filter
|
||||
def divide(term1, term2):
|
||||
try:
|
||||
return parse_decimal(term1) / parse_decimal(term2)
|
||||
except DecimalInvalidOperation:
|
||||
return ''
|
||||
except DecimalDivisionByZero:
|
||||
return ''
|
||||
|
||||
|
||||
@register.filter
|
||||
def ceil(value):
|
||||
'''the smallest integer value greater than or equal to value'''
|
||||
return decimal(math.ceil(parse_decimal(value)))
|
||||
|
||||
|
||||
@register.filter
|
||||
def floor(value):
|
||||
return decimal(math.floor(parse_decimal(value)))
|
||||
|
||||
|
||||
@register.filter(name='abs')
|
||||
def abs_(value):
|
||||
return decimal(abs(parse_decimal(value)))
|
||||
|
||||
|
||||
@register.filter(name='sum')
|
||||
def sum_(list_):
|
||||
if isinstance(list_, str):
|
||||
# do not consider string as iterable, to avoid misusage
|
||||
return ''
|
||||
try:
|
||||
return sum(parse_decimal(term) for term in list_)
|
||||
except TypeError: # list_ is not iterable
|
||||
return ''
|
||||
|
|
|
|||
|
|
@ -54,6 +54,15 @@ def test_getlist():
|
|||
assert t.render(context) == 'None,baz,'
|
||||
|
||||
|
||||
def test_split():
|
||||
t = Template('{% for x in plop|split %}{{x}}<br>{% endfor %}')
|
||||
assert t.render(Context({'plop': 'ab cd ef'})) == 'ab<br>cd<br>ef<br>'
|
||||
t = Template('{% for x in plop|split:"|" %}{{x}} {% endfor %}')
|
||||
assert t.render(Context({'plop': 'ab|cd|ef'})) == 'ab cd ef '
|
||||
t = Template('{% for x in plop|split:"|" %}{{x}} {% endfor %}')
|
||||
assert t.render(Context({'plop': 42})) == '42 '
|
||||
|
||||
|
||||
def test_first():
|
||||
t = Template('{{ foo|first }}')
|
||||
|
||||
|
|
@ -84,3 +93,208 @@ def test_last():
|
|||
|
||||
context = Context({'foo': None})
|
||||
assert t.render(context) == ''
|
||||
|
||||
|
||||
def test_decimal():
|
||||
tmpl = Template('{{ plop|decimal }}')
|
||||
assert tmpl.render(Context({'plop': 'toto'})) == '0'
|
||||
assert tmpl.render(Context({'plop': '3.14'})) == '3.14'
|
||||
assert tmpl.render(Context({'plop': '3,14'})) == '3.14'
|
||||
assert tmpl.render(Context({'plop': 3.14})) == '3.14'
|
||||
assert tmpl.render(Context({'plop': 12345.678})) == '12345.678'
|
||||
assert tmpl.render(Context({'plop': None})) == '0'
|
||||
assert tmpl.render(Context({'plop': 0})) == '0'
|
||||
|
||||
tmpl = Template('{{ plop|decimal:3 }}')
|
||||
assert tmpl.render(Context({'plop': '3.14'})) == '3.140'
|
||||
assert tmpl.render(Context({'plop': None})) == '0.000'
|
||||
tmpl = Template('{{ plop|decimal:"3" }}')
|
||||
assert tmpl.render(Context({'plop': '3.14'})) == '3.140'
|
||||
assert tmpl.render(Context({'plop': None})) == '0.000'
|
||||
|
||||
tmpl = Template('{% if plop|decimal > 2 %}hello{% endif %}')
|
||||
assert tmpl.render(Context({'plop': 3})) == 'hello'
|
||||
assert tmpl.render(Context({'plop': '3'})) == 'hello'
|
||||
assert tmpl.render(Context({'plop': 2.001})) == 'hello'
|
||||
assert tmpl.render(Context({'plop': '2.001'})) == 'hello'
|
||||
assert tmpl.render(Context({'plop': 1})) == ''
|
||||
assert tmpl.render(Context({'plop': 1.99})) == ''
|
||||
assert tmpl.render(Context({'plop': '1.99'})) == ''
|
||||
assert tmpl.render(Context({'plop': 'x'})) == ''
|
||||
assert tmpl.render(Context({'plop': None})) == ''
|
||||
assert tmpl.render(Context({'plop': 0})) == ''
|
||||
|
||||
tmpl = Template('{% if "3"|decimal == 3 %}hello{% endif %}')
|
||||
assert tmpl.render(Context()) == 'hello'
|
||||
tmpl = Template('{% if "3"|decimal == 3.0 %}hello{% endif %}')
|
||||
assert tmpl.render(Context()) == 'hello'
|
||||
tmpl = Template('{% if 3|decimal == 3 %}hello{% endif %}')
|
||||
assert tmpl.render(Context()) == 'hello'
|
||||
tmpl = Template('{% if 3.0|decimal == 3 %}hello{% endif %}')
|
||||
assert tmpl.render(Context()) == 'hello'
|
||||
tmpl = Template('{% if 3|decimal|decimal == 3 %}hello{% endif %}')
|
||||
assert tmpl.render(Context()) == 'hello'
|
||||
|
||||
|
||||
def test_add():
|
||||
tmpl = Template('{{ term1|add:term2 }}')
|
||||
|
||||
# using strings
|
||||
assert tmpl.render(Context({'term1': '1.1', 'term2': 0})) == '1.1'
|
||||
assert tmpl.render(Context({'term1': 'not a number', 'term2': 1.2})) == ''
|
||||
assert tmpl.render(Context({'term1': 0.3, 'term2': "1"})) == '1.3'
|
||||
assert tmpl.render(Context({'term1': 1.4, 'term2': "not a number"})) == ''
|
||||
|
||||
# add
|
||||
assert tmpl.render(Context({'term1': 4, 'term2': -0.9})) == '3.1'
|
||||
assert tmpl.render(Context({'term1': '4', 'term2': -0.8})) == '3.2'
|
||||
assert tmpl.render(Context({'term1': 4, 'term2': '-0.7'})) == '3.3'
|
||||
assert tmpl.render(Context({'term1': '4', 'term2': '-0.6'})) == '3.4'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': 3.5})) == '3.5'
|
||||
assert tmpl.render(Context({'term1': None, 'term2': 3.5})) == '3.5'
|
||||
assert tmpl.render(Context({'term1': 3.6, 'term2': ''})) == '3.6'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': ''})) == ''
|
||||
assert tmpl.render(Context({'term1': 3.6, 'term2': None})) == '3.6'
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': ''})) == '0'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': 0})) == '0'
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': 0})) == '0'
|
||||
|
||||
# if term is '' or None and other term is decimal
|
||||
assert tmpl.render(Context({'term1': '', 'term2': 2.2})) == '2.2'
|
||||
assert tmpl.render(Context({'term1': None, 'term2': 2.2})) == '2.2'
|
||||
assert tmpl.render(Context({'term1': 2.2, 'term2': ''})) == '2.2'
|
||||
assert tmpl.render(Context({'term1': 2.2, 'term2': None})) == '2.2'
|
||||
|
||||
# add using ',' instead of '.' decimal separator
|
||||
assert tmpl.render(Context({'term1': '1,1', 'term2': '2,2'})) == '3.3'
|
||||
assert tmpl.render(Context({'term1': '1,1', 'term2': '2.2'})) == '3.3'
|
||||
assert tmpl.render(Context({'term1': '1,1', 'term2': 2.2})) == '3.3'
|
||||
assert tmpl.render(Context({'term1': '1,1', 'term2': 0})) == '1.1'
|
||||
assert tmpl.render(Context({'term1': '1,1', 'term2': ''})) == '1.1'
|
||||
assert tmpl.render(Context({'term1': '1,1', 'term2': None})) == '1.1'
|
||||
assert tmpl.render(Context({'term1': '1.1', 'term2': '2,2'})) == '3.3'
|
||||
assert tmpl.render(Context({'term1': 1.1, 'term2': '2,2'})) == '3.3'
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': '2,2'})) == '2.2'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': '2,2'})) == '2.2'
|
||||
assert tmpl.render(Context({'term1': None, 'term2': '2,2'})) == '2.2'
|
||||
|
||||
# fallback to Django native add filter
|
||||
assert tmpl.render(Context({'term1': 'foo', 'term2': 'bar'})) == 'foobar'
|
||||
assert tmpl.render(Context({'term1': 'foo', 'term2': ''})) == 'foo'
|
||||
assert tmpl.render(Context({'term1': 'foo', 'term2': None})) == 'foo'
|
||||
assert tmpl.render(Context({'term1': 'foo', 'term2': 0})) == ''
|
||||
assert tmpl.render(Context({'term1': '', 'term2': 'bar'})) == 'bar'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': ''})) == ''
|
||||
assert tmpl.render(Context({'term1': '', 'term2': None})) == ''
|
||||
assert tmpl.render(Context({'term1': None, 'term2': 'bar'})) == 'bar'
|
||||
assert tmpl.render(Context({'term1': None, 'term2': ''})) == ''
|
||||
assert tmpl.render(Context({'term1': None, 'term2': None})) == ''
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': 'bar'})) == ''
|
||||
|
||||
|
||||
def test_substract():
|
||||
tmpl = Template('{{ term1|subtract:term2 }}')
|
||||
assert tmpl.render(Context({'term1': 5.1, 'term2': 1})) == '4.1'
|
||||
assert tmpl.render(Context({'term1': '5.2', 'term2': 1})) == '4.2'
|
||||
assert tmpl.render(Context({'term1': 5.3, 'term2': '1'})) == '4.3'
|
||||
assert tmpl.render(Context({'term1': '5.4', 'term2': '1'})) == '4.4'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': -4.5})) == '4.5'
|
||||
assert tmpl.render(Context({'term1': 4.6, 'term2': ''})) == '4.6'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': ''})) == '0'
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': ''})) == '0'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': 0})) == '0'
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': 0})) == '0'
|
||||
|
||||
|
||||
def test_multiply():
|
||||
tmpl = Template('{{ term1|multiply:term2 }}')
|
||||
assert tmpl.render(Context({'term1': '3', 'term2': '2'})) == '6'
|
||||
assert tmpl.render(Context({'term1': 2.5, 'term2': 2})) == '5.0'
|
||||
assert tmpl.render(Context({'term1': '2.5', 'term2': 2})) == '5.0'
|
||||
assert tmpl.render(Context({'term1': 2.5, 'term2': '2'})) == '5.0'
|
||||
assert tmpl.render(Context({'term1': '2.5', 'term2': '2'})) == '5.0'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': '2'})) == '0'
|
||||
assert tmpl.render(Context({'term1': 2.5, 'term2': ''})) == '0.0'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': ''})) == '0'
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': ''})) == '0'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': 0})) == '0'
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': 0})) == '0'
|
||||
|
||||
|
||||
def test_divide():
|
||||
tmpl = Template('{{ term1|divide:term2 }}')
|
||||
assert tmpl.render(Context({'term1': 16, 'term2': 2})) == '8'
|
||||
assert tmpl.render(Context({'term1': 6, 'term2': 0.75})) == '8'
|
||||
assert tmpl.render(Context({'term1': '6', 'term2': 0.75})) == '8'
|
||||
assert tmpl.render(Context({'term1': 6, 'term2': '0.75'})) == '8'
|
||||
assert tmpl.render(Context({'term1': '6', 'term2': '0.75'})) == '8'
|
||||
assert tmpl.render(Context({'term1': '', 'term2': '2'})) == '0'
|
||||
assert tmpl.render(Context({'term1': 6, 'term2': ''})) == ''
|
||||
assert tmpl.render(Context({'term1': '', 'term2': ''})) == ''
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': ''})) == ''
|
||||
assert tmpl.render(Context({'term1': '', 'term2': 0})) == ''
|
||||
assert tmpl.render(Context({'term1': 0, 'term2': 0})) == ''
|
||||
tmpl = Template('{{ term1|divide:term2|decimal:2 }}')
|
||||
assert tmpl.render(Context({'term1': 2, 'term2': 3})) == '0.67'
|
||||
|
||||
|
||||
def test_ceil():
|
||||
# ceil
|
||||
tmpl = Template('{{ value|ceil }}')
|
||||
assert tmpl.render(Context({'value': 3.14})) == '4'
|
||||
assert tmpl.render(Context({'value': 3.99})) == '4'
|
||||
assert tmpl.render(Context({'value': -3.14})) == '-3'
|
||||
assert tmpl.render(Context({'value': -3.99})) == '-3'
|
||||
assert tmpl.render(Context({'value': 0})) == '0'
|
||||
assert tmpl.render(Context({'value': '3.14'})) == '4'
|
||||
assert tmpl.render(Context({'value': '3.99'})) == '4'
|
||||
assert tmpl.render(Context({'value': '-3.14'})) == '-3'
|
||||
assert tmpl.render(Context({'value': '-3.99'})) == '-3'
|
||||
assert tmpl.render(Context({'value': '0'})) == '0'
|
||||
assert tmpl.render(Context({'value': 'not a number'})) == '0'
|
||||
assert tmpl.render(Context({'value': ''})) == '0'
|
||||
assert tmpl.render(Context({'value': None})) == '0'
|
||||
|
||||
|
||||
def test_floor():
|
||||
# floor
|
||||
tmpl = Template('{{ value|floor }}')
|
||||
assert tmpl.render(Context({'value': 3.14})) == '3'
|
||||
assert tmpl.render(Context({'value': 3.99})) == '3'
|
||||
assert tmpl.render(Context({'value': -3.14})) == '-4'
|
||||
assert tmpl.render(Context({'value': -3.99})) == '-4'
|
||||
assert tmpl.render(Context({'value': 0})) == '0'
|
||||
assert tmpl.render(Context({'value': '3.14'})) == '3'
|
||||
assert tmpl.render(Context({'value': '3.99'})) == '3'
|
||||
assert tmpl.render(Context({'value': '-3.14'})) == '-4'
|
||||
assert tmpl.render(Context({'value': '-3.99'})) == '-4'
|
||||
assert tmpl.render(Context({'value': '0'})) == '0'
|
||||
assert tmpl.render(Context({'value': 'not a number'})) == '0'
|
||||
assert tmpl.render(Context({'value': ''})) == '0'
|
||||
assert tmpl.render(Context({'value': None})) == '0'
|
||||
|
||||
|
||||
def test_abs():
|
||||
tmpl = Template('{{ value|abs }}')
|
||||
assert tmpl.render(Context({'value': 3.14})) == '3.14'
|
||||
assert tmpl.render(Context({'value': -3.14})) == '3.14'
|
||||
assert tmpl.render(Context({'value': 0})) == '0'
|
||||
assert tmpl.render(Context({'value': '3.14'})) == '3.14'
|
||||
assert tmpl.render(Context({'value': '-3.14'})) == '3.14'
|
||||
assert tmpl.render(Context({'value': '0'})) == '0'
|
||||
assert tmpl.render(Context({'value': 'not a number'})) == '0'
|
||||
assert tmpl.render(Context({'value': ''})) == '0'
|
||||
assert tmpl.render(Context({'value': None})) == '0'
|
||||
|
||||
|
||||
def test_sum():
|
||||
t = Template('{{ "2 29.5 9,5 .5"|split|sum }}')
|
||||
assert t.render(Context()) == '41.5'
|
||||
t = Template('{{ list|sum }}')
|
||||
assert t.render(Context({'list': [1, 2, '3']})) == '6'
|
||||
assert t.render(Context({'list': [1, 2, 'x']})) == '3'
|
||||
assert t.render(Context({'list': [None, 2.0, 'x']})) == '2'
|
||||
assert t.render(Context({'list': []})) == '0'
|
||||
assert t.render(Context({'list': None})) == '' # list is not iterable
|
||||
assert t.render(Context({'list': '123'})) == '' # consider string as not iterable
|
||||
assert t.render(Context()) == ''
|
||||
|
|
|
|||
Loading…
Reference in New Issue