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from django.contrib.auth import get_user_model
from django.template import Context, Template
from django.test import TestCase
from django.utils.translation import gettext_lazy as _
import django_tables2 as tables
from .app.models import Person
from .utils import build_request, parse
User = get_user_model()
data = [
{"name": "Adrian", "country": "Australia"},
{"name": "Roy", "country": "Brazil"},
{"name": "Audrey", "country": "Chile"},
{"name": "Bassie", "country": "Belgium"},
]
class DynamicColumnsTest(TestCase):
def test_dynamically_adding_columns(self):
"""
When adding columns to self.base_columns, they were actually added to
the class attribute `Table.base_columns`, and not to the instance
attribute, `table.base_columns`
issue #403
"""
class MyTable(tables.Table):
name = tables.Column()
# this is obvious:
self.assertEqual(list(MyTable(data).columns.columns.keys()), ["name"])
self.assertEqual(
list(
MyTable(data, extra_columns=[("country", tables.Column())]).columns.columns.keys()
),
["name", "country"],
)
# this new instance should not have the extra columns added to the first instance.
self.assertEqual(list(MyTable(data).columns.columns.keys()), ["name"])
def test_dynamically_removing_columns(self):
class MyTable(tables.Table):
name = tables.Column()
# this is obvious:
self.assertEqual(list(MyTable(data).columns.columns.keys()), ["name"])
self.assertEqual(
list(
MyTable(
data, extra_columns=[("country", tables.Column()), ("name", None)]
).columns.columns.keys()
),
["country"],
)
# this new instance should not have the extra columns added to the first instance.
self.assertEqual(list(MyTable(data).columns.columns.keys()), ["name"])
def test_sorting_on_dynamically_added_columns(self):
class MyTable(tables.Table):
name = tables.Column()
table = MyTable(
data,
order_by="-country",
extra_columns=[("country", tables.Column(verbose_name=_("country")))],
)
root = parse(table.as_html(build_request()))
self.assertEqual(root.find(".//tbody/tr/td[2]").text, "Chile")
self.assertEqual(root.find(".//tbody/tr[4]/td[2]").text, "Australia")
def test_dynamically_override_auto_generated_columns(self):
for name, country in data:
Person.objects.create(first_name=name, last_name=country)
queryset = Person.objects.all()
class MyTable(tables.Table):
class Meta:
model = Person
fields = ("first_name", "last_name")
self.assertEqual(
list(MyTable(queryset).columns.columns.keys()), ["first_name", "last_name"]
)
table = MyTable(
queryset,
extra_columns=[("first_name", tables.Column(attrs={"td": {"style": "color: red;"}}))],
)
# we still should have two columns
self.assertEqual(list(table.columns.columns.keys()), ["first_name", "last_name"])
# the attrs should be applied to the `first_name` column
self.assertEqual(
table.columns["first_name"].attrs["td"], {"style": "color: red;", "class": None}
)
def test_dynamically_add_column_with_sequence(self):
class MyTable(tables.Table):
name = tables.Column()
class Meta:
sequence = ("...", "name")
self.assertEqual(
list(
MyTable(data, extra_columns=[("country", tables.Column())]).columns.columns.keys()
),
["country", "name"],
)
# override sequence with an argument.
self.assertEqual(
list(
MyTable(
data, extra_columns=[("country", tables.Column())], sequence=("name", "...")
).columns.columns.keys()
),
["name", "country"],
)
def test_dynamically_hide_columns(self):
class MyTable(tables.Table):
name = tables.Column(orderable=False)
country = tables.Column(orderable=False)
def before_render(self, request):
if request.user.username == "Bob":
self.columns.hide("country")
else:
self.columns.show("country")
template = Template("{% load django_tables2 %}{% render_table table %}")
re_Name = r"<th >\s*Name\s*</th>"
re_Country = r"<th >\s*Country\s*</th>"
table = MyTable(data)
request = build_request(user=User.objects.create(username="Bob"))
html = table.as_html(request)
self.assertRegex(html, re_Name)
self.assertNotRegex(html, re_Country)
html = template.render(Context({"request": request, "table": table}))
self.assertRegex(html, re_Name)
self.assertNotRegex(html, re_Country)
request = build_request(user=User.objects.create(username="Alice"))
html = table.as_html(request)
self.assertRegex(html, re_Name)
self.assertRegex(html, re_Country)
html = template.render(Context({"request": request, "table": table}))
self.assertRegex(html, re_Name)
self.assertRegex(html, re_Country)
def test_sequence_and_extra_columns(self):
"""
https://github.com/jieter/django-tables2/issues/486
The exact moment the '...' is expanded is crucial here.
"""
add_occupation_column = True
class MyTable(tables.Table):
class Meta:
model = Person
fields = ("first_name", "friends")
sequence = ("first_name", "...", "friends")
def __init__(self, data, *args, **kwargs):
kwargs["extra_columns"] = kwargs.get("extra_columns", [])
if add_occupation_column:
kwargs["extra_columns"].append(
("occupation", tables.RelatedLinkColumn(orderable=False))
)
super().__init__(data, *args, **kwargs)
table = MyTable(Person.objects.all())
self.assertEqual([c.name for c in table.columns], ["first_name", "occupation", "friends"])
add_occupation_column = False
table = MyTable(Person.objects.all())
self.assertEqual([c.name for c in table.columns], ["first_name", "friends"])
def test_change_attributes(self):
"""
https://github.com/jieter/django-tables2/issues/574
"""
class Table(tables.Table):
mycolumn = tables.Column(orderable=False)
def __init__(self, *args, **kwargs):
self.base_columns["mycolumn"].verbose_name = "Monday"
super().__init__(*args, **kwargs)
table = Table([])
self.assertEqual(table.columns["mycolumn"].verbose_name, "Monday")
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