def do_form_field(parser, token):
"""
Render a WTForms form field allowing optional HTML attributes.
Invocation looks like this:
{% form_field form.username class="big_text" onclick="alert('hello')" %}
where form.username is the path to the field value we want. Any number
of key="value" arguments are supported. Unquoted values are resolved as
template variables.
"""
parts = token.contents.split(' ', 2)
if len(parts) < 2:
error_text = '%r tag must have the form field name as the first value, followed by optional key="value" attributes.'
raise template.TemplateSyntaxError(error_text % parts[0])
html_attrs = {}
if len(parts) == 3:
raw_args = list(args_split(parts[2]))
if (len(raw_args) % 2) != 0:
raise template.TemplateSyntaxError('%r tag received the incorrect number of key=value arguments.' % parts[0])
for x in range(0, len(raw_args), 2):
html_attrs[str(raw_args[x])] = Variable(raw_args[x + 1])
return FormFieldNode(parts[1], html_attrs)
python类TemplateSyntaxError()的实例源码
def do_form_field(parser, token):
"""
Render a WTForms form field allowing optional HTML attributes.
Invocation looks like this:
{% form_field form.username class="big_text" onclick="alert('hello')" %}
where form.username is the path to the field value we want. Any number
of key="value" arguments are supported. Unquoted values are resolved as
template variables.
"""
parts = token.contents.split(' ', 2)
if len(parts) < 2:
raise template.TemplateSyntaxError('%r tag must have the form field name as the first value, followed by optional key="value" attributes.' % parts[0])
html_attrs = {}
if len(parts) == 3:
raw_args = list(args_split(parts[2]))
if (len(raw_args) % 2) != 0:
raise template.TemplateSyntaxError('%r tag received the incorrect number of key=value arguments.' % parts[0])
for x in range(0, len(raw_args), 2):
html_attrs[str(raw_args[x])] = Variable(raw_args[x+1])
return FormFieldNode(parts[1], html_attrs)
def do_form_field(parser, token):
"""
Render a WTForms form field allowing optional HTML attributes.
Invocation looks like this:
{% form_field form.username class="big_text" onclick="alert('hello')" %}
where form.username is the path to the field value we want. Any number
of key="value" arguments are supported. Unquoted values are resolved as
template variables.
"""
parts = token.contents.split(' ', 2)
if len(parts) < 2:
error_text = '%r tag must have the form field name as the first value, followed by optional key="value" attributes.'
raise template.TemplateSyntaxError(error_text % parts[0])
html_attrs = {}
if len(parts) == 3:
raw_args = list(args_split(parts[2]))
if (len(raw_args) % 2) != 0:
raise template.TemplateSyntaxError('%r tag received the incorrect number of key=value arguments.' % parts[0])
for x in range(0, len(raw_args), 2):
html_attrs[str(raw_args[x])] = Variable(raw_args[x + 1])
return FormFieldNode(parts[1], html_attrs)
def ifusergroup(parser, token):
""" Check to see if the currently logged in user belongs to one or more groups
Requires the Django authentication contrib app and middleware.
Usage: {% ifusergroup Admins %} ... {% endifusergroup %}, or
{% ifusergroup Admins Clients Programmers Managers %} ... {% else %} ... {% endifusergroup %}
"""
try:
tokens = token.split_contents()
groups = []
groups += tokens[1:]
except ValueError:
raise template.TemplateSyntaxError("Tag 'ifusergroup' requires at least 1 argument.")
nodelist_true = parser.parse(('else', 'endifusergroup'))
token = parser.next_token()
if token.contents == 'else':
nodelist_false = parser.parse(('endifusergroup',))
parser.delete_first_token()
else:
nodelist_false = template.NodeList()
return GroupCheckNode(groups, nodelist_true, nodelist_false)
def ifappexists(parser, token):
""" Conditional Django template tag to check if one or more apps exist.
Usage: {% ifappexists tag %} ... {% endifappexists %}, or
{% ifappexists tag inventory %} ... {% else %} ... {% endifappexists %}
"""
try:
tokens = token.split_contents()
apps = []
apps += tokens[1:]
except ValueError:
raise template.TemplateSyntaxError("Tag 'ifappexists' requires at least 1 argument.")
nodelist_true = parser.parse(('else', 'endifappexists'))
token = parser.next_token()
if token.contents == 'else':
nodelist_false = parser.parse(('endifappexists',))
parser.delete_first_token()
else:
nodelist_false = template.NodeList()
return AppCheckNode(apps, nodelist_true, nodelist_false)
def do_macro(parser, token):
try:
args = token.split_contents()
tag_name, macro_name, args = args[0], args[1], args[2:]
except IndexError:
m = ("'%s' tag requires at least one argument (macro name)"
% token.contents.split()[0])
raise template.TemplateSyntaxError(m)
# TODO: could do some validations here,
# for now, "blow your head clean off"
nodelist = parser.parse(('endkwacro',))
parser.delete_first_token()
## Metadata of each macro are stored in a new attribute
## of 'parser' class. That way we can access it later
## in the template when processing 'usemacro' tags.
_setup_macros_dict(parser)
parser._macros[macro_name] = DefineMacroNode(macro_name, nodelist, args)
return parser._macros[macro_name]
def do_loadmacros(parser, token):
try:
tag_name, filename = token.split_contents()
except IndexError:
m = ("'%s' tag requires at least one argument (macro name)"
% token.contents.split()[0])
raise template.TemplateSyntaxError(m)
if filename[0] in ('"', "'") and filename[-1] == filename[0]:
filename = filename[1:-1]
t = get_template(filename)
macros = t.nodelist.get_nodes_by_type(DefineMacroNode)
## Metadata of each macro are stored in a new attribute
## of 'parser' class. That way we can access it later
## in the template when processing 'usemacro' tags.
_setup_macros_dict(parser)
for macro in macros:
parser._macros[macro.name] = macro
return LoadMacrosNode()
def do_form_field(parser, token):
"""
Render a WTForms form field allowing optional HTML attributes.
Invocation looks like this:
{% form_field form.username class="big_text" onclick="alert('hello')" %}
where form.username is the path to the field value we want. Any number
of key="value" arguments are supported. Unquoted values are resolved as
template variables.
"""
parts = token.contents.split(' ', 2)
if len(parts) < 2:
error_text = '%r tag must have the form field name as the first value, followed by optional key="value" attributes.'
raise template.TemplateSyntaxError(error_text % parts[0])
html_attrs = {}
if len(parts) == 3:
raw_args = list(args_split(parts[2]))
if (len(raw_args) % 2) != 0:
raise template.TemplateSyntaxError('%r tag received the incorrect number of key=value arguments.' % parts[0])
for x in range(0, len(raw_args), 2):
html_attrs[str(raw_args[x])] = Variable(raw_args[x + 1])
return FormFieldNode(parts[1], html_attrs)
def do_form_field(parser, token):
"""
Render a WTForms form field allowing optional HTML attributes.
Invocation looks like this:
{% form_field form.username class="big_text" onclick="alert('hello')" %}
where form.username is the path to the field value we want. Any number
of key="value" arguments are supported. Unquoted values are resolved as
template variables.
"""
parts = token.contents.split(' ', 2)
if len(parts) < 2:
error_text = '%r tag must have the form field name as the first value, followed by optional key="value" attributes.'
raise template.TemplateSyntaxError(error_text % parts[0])
html_attrs = {}
if len(parts) == 3:
raw_args = list(args_split(parts[2]))
if (len(raw_args) % 2) != 0:
raise template.TemplateSyntaxError('%r tag received the incorrect number of key=value arguments.' % parts[0])
for x in range(0, len(raw_args), 2):
html_attrs[str(raw_args[x])] = Variable(raw_args[x + 1])
return FormFieldNode(parts[1], html_attrs)
def do_form_field(parser, token):
"""
Render a WTForms form field allowing optional HTML attributes.
Invocation looks like this:
{% form_field form.username class="big_text" onclick="alert('hello')" %}
where form.username is the path to the field value we want. Any number
of key="value" arguments are supported. Unquoted values are resolved as
template variables.
"""
parts = token.contents.split(' ', 2)
if len(parts) < 2:
error_text = '%r tag must have the form field name as the first value, followed by optional key="value" attributes.'
raise template.TemplateSyntaxError(error_text % parts[0])
html_attrs = {}
if len(parts) == 3:
raw_args = list(args_split(parts[2]))
if (len(raw_args) % 2) != 0:
raise template.TemplateSyntaxError('%r tag received the incorrect number of key=value arguments.' % parts[0])
for x in range(0, len(raw_args), 2):
html_attrs[str(raw_args[x])] = Variable(raw_args[x + 1])
return FormFieldNode(parts[1], html_attrs)
def urlize_html(html):
"""
Returns urls found in an (X)HTML text node element as urls via Django urlize filter.
"""
try:
from bs4 import BeautifulSoup
except ImportError:
if settings.DEBUG:
raise template.TemplateSyntaxError(
"Error in urlize_html The Python BeautifulSoup libraries aren't installed.")
return html
else:
soup = BeautifulSoup(html, 'html.parser')
text_nodes = soup.find_all(text=True)
for text_node in text_nodes:
urlized_text = urlize(text_node)
text_node.replace_with(BeautifulSoup(urlized_text, 'html.parser'))
return mark_safe(str(soup))
def do_get_available_languages(parser, token):
"""
This will store a list of available languages
in the context.
Usage::
{% get_available_languages as languages %}
{% for language in languages %}
...
{% endfor %}
This will just pull the LANGUAGES setting from
your setting file (or the default settings) and
put it into the named variable.
"""
# token.split_contents() isn't useful here because this tag doesn't accept variable as arguments
args = token.contents.split()
if len(args) != 3 or args[1] != 'as':
raise TemplateSyntaxError("'get_available_languages' requires 'as variable' (got %r)" % args)
return GetAvailableLanguagesNode(args[2])
def do_get_language_info_list(parser, token):
"""
This will store a list of language information dictionaries for the given
language codes in a context variable. The language codes can be specified
either as a list of strings or a settings.LANGUAGES style list (or any
sequence of sequences whose first items are language codes).
Usage::
{% get_language_info_list for LANGUAGES as langs %}
{% for l in langs %}
{{ l.code }}
{{ l.name }}
{{ l.name_translated }}
{{ l.name_local }}
{{ l.bidi|yesno:"bi-directional,uni-directional" }}
{% endfor %}
"""
args = token.split_contents()
if len(args) != 5 or args[1] != 'for' or args[3] != 'as':
raise TemplateSyntaxError("'%s' requires 'for sequence as variable' (got %r)" % (args[0], args[1:]))
return GetLanguageInfoListNode(parser.compile_filter(args[2]), args[4])
def do_get_current_language(parser, token):
"""
This will store the current language in the context.
Usage::
{% get_current_language as language %}
This will fetch the currently active language and
put it's value into the ``language`` context
variable.
"""
# token.split_contents() isn't useful here because this tag doesn't accept variable as arguments
args = token.contents.split()
if len(args) != 3 or args[1] != 'as':
raise TemplateSyntaxError("'get_current_language' requires 'as variable' (got %r)" % args)
return GetCurrentLanguageNode(args[2])
def do_get_current_language_bidi(parser, token):
"""
This will store the current language layout in the context.
Usage::
{% get_current_language_bidi as bidi %}
This will fetch the currently active language's layout and
put it's value into the ``bidi`` context variable.
True indicates right-to-left layout, otherwise left-to-right
"""
# token.split_contents() isn't useful here because this tag doesn't accept variable as arguments
args = token.contents.split()
if len(args) != 3 or args[1] != 'as':
raise TemplateSyntaxError("'get_current_language_bidi' requires 'as variable' (got %r)" % args)
return GetCurrentLanguageBidiNode(args[2])
def language(parser, token):
"""
This will enable the given language just for this block.
Usage::
{% language "de" %}
This is {{ bar }} and {{ boo }}.
{% endlanguage %}
"""
bits = token.split_contents()
if len(bits) != 2:
raise TemplateSyntaxError("'%s' takes one argument (language)" % bits[0])
language = parser.compile_filter(bits[1])
nodelist = parser.parse(('endlanguage',))
parser.delete_first_token()
return LanguageNode(nodelist, language)
def localtime_tag(parser, token):
"""
Forces or prevents conversion of datetime objects to local time,
regardless of the value of ``settings.USE_TZ``.
Sample usage::
{% localtime off %}{{ value_in_utc }}{% endlocaltime %}
"""
bits = token.split_contents()
if len(bits) == 1:
use_tz = True
elif len(bits) > 2 or bits[1] not in ('on', 'off'):
raise TemplateSyntaxError("%r argument should be 'on' or 'off'" %
bits[0])
else:
use_tz = bits[1] == 'on'
nodelist = parser.parse(('endlocaltime',))
parser.delete_first_token()
return LocalTimeNode(nodelist, use_tz)
def get_current_timezone_tag(parser, token):
"""
Stores the name of the current time zone in the context.
Usage::
{% get_current_timezone as TIME_ZONE %}
This will fetch the currently active time zone and put its name
into the ``TIME_ZONE`` context variable.
"""
# token.split_contents() isn't useful here because this tag doesn't accept variable as arguments
args = token.contents.split()
if len(args) != 3 or args[1] != 'as':
raise TemplateSyntaxError("'get_current_timezone' requires "
"'as variable' (got %r)" % args)
return GetCurrentTimezoneNode(args[2])
def localize_tag(parser, token):
"""
Forces or prevents localization of values, regardless of the value of
`settings.USE_L10N`.
Sample usage::
{% localize off %}
var pi = {{ 3.1415 }};
{% endlocalize %}
"""
use_l10n = None
bits = list(token.split_contents())
if len(bits) == 1:
use_l10n = True
elif len(bits) > 2 or bits[1] not in ('on', 'off'):
raise TemplateSyntaxError("%r argument should be 'on' or 'off'" % bits[0])
else:
use_l10n = bits[1] == 'on'
nodelist = parser.parse(('endlocalize',))
parser.delete_first_token()
return LocalizeNode(nodelist, use_l10n)
def do_form_field(parser, token):
"""
Render a WTForms form field allowing optional HTML attributes.
Invocation looks like this:
{% form_field form.username class="big_text" onclick="alert('hello')" %}
where form.username is the path to the field value we want. Any number
of key="value" arguments are supported. Unquoted values are resolved as
template variables.
"""
parts = token.contents.split(' ', 2)
if len(parts) < 2:
error_text = '%r tag must have the form field name as the first value, followed by optional key="value" attributes.'
raise template.TemplateSyntaxError(error_text % parts[0])
html_attrs = {}
if len(parts) == 3:
raw_args = list(args_split(parts[2]))
if (len(raw_args) % 2) != 0:
raise template.TemplateSyntaxError('%r tag received the incorrect number of key=value arguments.' % parts[0])
for x in range(0, len(raw_args), 2):
html_attrs[str(raw_args[x])] = Variable(raw_args[x + 1])
return FormFieldNode(parts[1], html_attrs)
