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Fixed #295 - added {{{forloop.revcounter}}} and {{{forloop.revcounter0}}} variables to for loops. Also updated the docs and added unit tests to verify correct behavior. Thanks, Clint. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@736 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Jacob Kaplan-Moss 2005-09-29 23:34:29 +00:00
parent 151b44c89a
commit 27b1f69d79
3 changed files with 15 additions and 0 deletions
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7
django/core/defaulttags.py
View File

@ -97,6 +97,9 @@ class ForNode(template.Node):
# shortcuts for current loop iteration number
'counter0': i,
'counter': i+1,
# reverse counter iteration numbers
'revcounter': len_values - i,
'revcounter0': len_values - i - 1,
# boolean values designating first and last times through loop
'first': (i == 0),
'last': (i == len_values - 1),
@ -431,6 +434,10 @@ def do_for(parser, token):
========================== ================================================
``forloop.counter`` The current iteration of the loop (1-indexed)
``forloop.counter0`` The current iteration of the loop (0-indexed)
``forloop.revcounter`` The number of iterations from the end of the
loop (1-indexed)
``forloop.revcounter0`` The number of iterations from the end of the
loop (0-indexed)
``forloop.first`` True if this is the first time through the loop
``forloop.last`` True if this is the last time through the loop
``forloop.parentloop`` For nested loops, this is the loop "above" the

4
docs/templates.txt
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@ -376,6 +376,10 @@ Built-in tag reference
========================== ================================================
``forloop.counter`` The current iteration of the loop (1-indexed)
``forloop.counter0`` The current iteration of the loop (0-indexed)
``forloop.revcounter`` The number of iterations from the end of the
loop (1-indexed)
``forloop.revcounter0`` The number of iterations from the end of the
loop (0-indexed)
``forloop.first`` True if this is the first time through the loop
``forloop.last`` True if this is the last time through the loop
``forloop.parentloop`` For nested loops, this is the loop "above" the

4
tests/othertests/templates.py
View File

@ -107,6 +107,10 @@ TEMPLATE_TESTS = {
### FOR TAG ###############################################################
'for-tag01': ("{% for val in values %}{{ val }}{% endfor %}", {"values": [1, 2, 3]}, "123"),
'for-tag02': ("{% for val in values reversed %}{{ val }}{% endfor %}", {"values": [1, 2, 3]}, "321"),
'for-tag-vars01': ("{% for val in values %}{{ forloop.counter }}{% endfor %}", {"values": [6, 6, 6]}, "123"),
'for-tag-vars02': ("{% for val in values %}{{ forloop.counter0 }}{% endfor %}", {"values": [6, 6, 6]}, "012"),
'for-tag-vars03': ("{% for val in values %}{{ forloop.revcounter }}{% endfor %}", {"values": [6, 6, 6]}, "321"),
'for-tag-vars04': ("{% for val in values %}{{ forloop.revcounter0 }}{% endfor %}", {"values": [6, 6, 6]}, "210"),
### IFEQUAL TAG ###########################################################
'ifequal01': ("{% ifequal a b %}yes{% endifequal %}", {"a": 1, "b": 2}, ""),