CODEWITHSUNDEEP
djangogoogle-app-enginedjango-templates
Nix
Nix

Reputation: 58522

django custom tag inline or block

I was wondering if there was a way to check if a tag has an endblock. I am basically trying to let the user do

{% mytag 'a' 'b' 'c' %}

or 

{% mytag 'a' 'b' 'c' %}
    <!-- other markup here -->
{% end mytag %}

I saw if that its not there it will raise an exception, but is there any way to programmatically setup my tag to safely handle both situations ?

Upvotes: 2

Views: 297

Answers (1)

Gwilym Humphreys
Gwilym Humphreys

Reputation: 231

You can try parsing until the closing tag and catching the exception if it isn't found. You might want to stop if you run in to another mytag node also:

def do_mytag_stuff(parser, token):

    # Process your token however you need
    mytag_args = token.split_contents()

    try:
        nodelist = parser.parse(('endmytag', 'mytag'))
        token = parser.next_token()
        if token.contents == 'endmytag':
            # Found an ending tag, make a node for its contents
            parser.delete_first_token()
            return MyTagNode(nodelist, mytag_args)

    except TemplateSyntaxError:
        # Neither tag was found
        pass

    # So either there's no closing tag, or we met another mytag before a closing tag. 
    # Do whatever you would for a single tag here
    return SingleMyTagNode(mytag_args)

Not sure if that's 100% correct, but hopefully it will help.

Upvotes: 3

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