Source Code for Module madrona.common.templatetags.set_var

 1  from django import template 
 2   
 3  register = template.Library() 
 4   
 5 -class SetVarNode(template.Node): 
 6   
 7 -    def __init__(self, var_name, var_value): 
 8          self.var_name = var_name 
 9          self.var_value = var_value 
10   
11 -    def render(self, context): 
12          try: 
13              value = template.Variable(self.var_value).resolve(context) 
14          except template.VariableDoesNotExist: 
15              value = "" 
16          context[self.var_name] = value 
17          return u"" 
18   
19 -def set_var(parser, token): 
20      """ 
21          {% set <var_name>  = <var_value> %} 
22      """ 
23      parts = token.split_contents() 
24      if len(parts) < 4: 
25          raise template.TemplateSyntaxError("'set' tag must be of the form:  {% set <var_name>  = <var_value> %}") 
26      return SetVarNode(parts[1], parts[3]) 
27   
28  register.tag('set', set_var) 
29