Converts {% include %} tag in django into javascript expression
Examples:
>>> from client_templates import TemplateJsNode, JsTplSettings
>>> from django.template import Template
>>> ###############
>>> #This object is pretty hard to test using doc test as we need an entire environment to setup
>>> #hence for the time being we won't test it :(
>>> ###############
"""
expected_node_classname = 'ConstantIncludeNode'
def _init_vars(self):
tpl_path = self.django_node.template.name
if tpl_path not in JsTplSettings.CONFIG['tpls']:
raise NameError("Unabled to find template file %s in JsTplSettings.CONFIG[\'tpls\']" % tpl_path)
tpl_info = JsTplSettings.CONFIG['tpls'][tpl_path]
tpl_var_list = None
self.tpl_func_name = tpl_info['tpl_func_name']
if 'var_list' in tpl_info:
tpl_var_list = tpl_info['var_list']
self.tpl_var_list = tpl_var_list
#add parameters of the include file into the global context of the calling file
if tpl_var_list:
[self.context.register_var(var_name, 'global') for var_name in tpl_var_list]
self.update_parent_context()
def generate_js_statement(self):
return 'return %s' % self.generate_js_statement_as_closure()
def generate_js_statement_as_closure(self):
return self._wrap_expr_in_js_func(self.tpl_func_name, self.tpl_var_list)
JsProcessorRegistry.register_js_node(ConstantIncludeJsNode)
empty_block_init = 'var ' + sequence_size_init + ';'
else:
for_init_vars.append(sequence_size_init)
if JsTplSettings.CONFIG['VERSAGER_MODE']:
for_init_vars.append(self.loop_val_varname + '=[]')
loop_val = self.loop_val_varname + '[' + self.loop_val_varname + '.length]=' \
+ self._nodes_to_js_str(self.loop_block, as_closure = True)
loop_val_result = self.loop_val_varname + '.join("")'
else:
for_init_vars.append(self.loop_val_varname + '=""')
loop_val = self.loop_val_varname + '+=' + self._nodes_to_js_str(self.loop_block, as_closure = True)
loop_val_result = self.loop_val_varname
for_init = 'var ' + ','.join(for_init_vars) + ';'
#e.g. for(...; i < arraySize; ...)
for_check = self.for_iterator_varname + '<' + self.sequence_size_varname + ';'
#e.g. for(..; ...; i++)
for_increment = self.for_iterator_varname + '++'
for_stmt = 'for(' + for_init + for_check + for_increment + '){' + ','.join(js_loop_vars) + ';' + \
loop_val + '} return ' + loop_val_result
#if empty block is set, then we wrap the for statement inside of if statement that tests whether or not the
#sequence is empty
if self.empty_block:
for_stmt = empty_block_init + 'if(' + self.sequence_size_varname + '){' + for_stmt + \
'}else{' + self._nodes_to_js_str(self.empty_block) + '}'
return for_stmt
JsProcessorRegistry.register_js_node(ForJsNode)
#YZ JavaScript Django Template Compiler
#Copyright (c) 2010 Weiss I Nicht <*****@*****.**>
#(sha-1: 90f01291285340bf03c2d41952c4b21b3d338907)
from client_templates import BaseJsFilter, JsProcessorRegistry
class DefaultJsFilter(BaseJsFilter):
"""
Converts the "default" filter in django templates to javascript expression
i.e. {{exampleVar|default:"default value"}}
Examples:
>>> from client_templates import TemplateJsNode,JsTplSettings
>>> JsTplSettings.CONFIG['VERSAGER_MODE'] = False
>>> ###############
>>> #test django "default" filter
>>> ###############
>>> js_tpl = TemplateJsNode('Default value text: {{testVar|default:"default val"}}')
>>> js_tpl.render()
u'function(testVar){return "Default value text: "+yzdjs_default(testVar,"default val")}'
"""
expected_filter_funcname = 'default'
js_func_name = 'yzdjs_default'
file_path = __file__
JsProcessorRegistry.register_js_filter(DefaultJsFilter)
#YZ JavaScript Django Template Compiler
#Copyright (c) 2010 Weiss I Nicht <*****@*****.**>
#(sha-1: 90f01291285340bf03c2d41952c4b21b3d338907)
from client_templates import BaseJsFilter, JsProcessorRegistry
class HashJsFilter(BaseJsFilter):
"""
Converts the "hash" filter in django templates to native javascript hash look up,
i.e. {{exampleVar|hash:varB}}
Examples:
>>> from client_templates import TemplateJsNode,JsTplSettings
>>> from client_templates.customfilters import *
>>> JsTplSettings.CONFIG['VERSAGER_MODE'] = False
>>> ###############
>>> #test django "hash" filter
>>> ###############
>>> js_tpl = TemplateJsNode('{% load hash %}Dict var1 with hash varB{{ varA|hash:varB }}')
>>> js_tpl.render()
u'function(varA,varB){return "Dict var1 with hash varB"+varA[varB]}'
"""
expected_filter_funcname = 'hash'
def render(self):
return '%s[%s]' % (self.expr, self.arg)
JsProcessorRegistry.register_js_filter(HashJsFilter)
#YZ JavaScript Django Template Compiler
#Copyright (c) 2010 Weiss I Nicht <*****@*****.**>
#(sha-1: 90f01291285340bf03c2d41952c4b21b3d338907)
from client_templates import BaseJsFilter, JsProcessorRegistry
class AddJsFilter(BaseJsFilter):
"""
Converts the "add" filter in django templates to native javascript expression,
i.e. {{exampleVar|add:"2"}}
Examples:
>>> from client_templates import TemplateJsNode,JsTplSettings
>>> JsTplSettings.CONFIG['VERSAGER_MODE'] = False
>>> ###############
>>> #test django "add" filter
>>> ###############
>>> js_tpl = TemplateJsNode('1 + 1 = {{ 1|add:"1" }}')
>>> js_tpl.render()
u'function(){return "1 + 1 = "+(1+1)}'
>>> js_tpl = TemplateJsNode('{{ 1|add:"1" }}')
>>> js_tpl.render()
u'function(){return (1+1)}'
"""
expected_filter_funcname = 'add'
def render(self):
return '(%s)' % '+'.join(self.js_func_params)
JsProcessorRegistry.register_js_filter(AddJsFilter)
>>> from client_templates.customtags import *
>>> JsTplSettings.CONFIG['VERSAGER_MODE'] = False
>>> ###############
>>> #test django AssignNode object behaves as expected
>>> ###############
>>> from django.template import Template
>>> django_tpl = Template('{%load assign%} example here: {% assign other_str "another"|capfirst %}')
>>> assign_node = django_tpl.nodelist[2]
>>> assign_node.name
u'other_str'
>>> assign_node.value.var
u'another'
>>> assign_node.value.filters[0][0].__name__
'capfirst'
>>> ###############
>>> #test assign js node works
>>> ###############
>>> js_tpl = TemplateJsNode('{%load assign%} assigning here: {% assign other_str varA|add:"5" %} displaying here: {{ other_str }}')
>>> js_tpl.render()
u'function(varA){var other_str;return " assigning here: "+function(){other_str=(varA+5);return ""}()+" displaying here: "+other_str}'
"""
expected_node_classname = 'AssignNode'
def _init_vars(self):
self.new_var_name = self.context.register_var(self.django_node.name, scope="global", var_type="implicit")
self.new_var_value_expr = self._extract_filter_expression(self.django_node.value)
def generate_js_statement(self):
#e.g. varA=123
#e.g. function(){varA=123;return null}()
return self.new_var_name + '=' + self.new_var_value_expr + ';return ""'
JsProcessorRegistry.register_js_node(AssignJsNode)