CODEWITHSUNDEEP
pythondjangodatedjango-templates
user3354539
user3354539

Reputation: 1245

django custom template tag - if else condition

I have been trying to write my 1st django custom template tag, by reading the django docs.

The custom template tag I have written contains a conditional if elseif else condition.

The result is always returning the else condition.

Here is my custom template tag code:

@register.filter(name='replace_date_separator')
def replace_date_separator(value, arg):

if arg is 'fr-CA':
    return value.replace("/", '-')
elif arg is 'de' or arg is 'pl' or arg is 'ru':
    return value.replace("/", '.')
else:
    return value.replace("/", '*')

Here is my template tag:

{{ voluntary_detail.voluntary_finish_date|date:'m/Y'|replace_date_separator:voluntary_detail.language_version.language_code }}

The voluntary_detail.language_version.language_code above is the two letter language code - ru, de, en, pl, etc.

Upvotes: 0

Views: 563

Answers (1)

Anshul Goyal
Anshul Goyal

Reputation: 77023

You are using the is keyword, which checks for object identity match, and hence, always fails.

Instead use == to check for equality, and do:

@register.filter(name='replace_date_separator')
def replace_date_separator(value, arg):

    if arg == 'fr-CA':
        return value.replace("/", '-')
    elif arg == 'de' or arg == 'pl' or arg == 'ru':
        return value.replace("/", '.')
    else:
        return value.replace("/", '*')

As an aside, you can simplify the elif statement to elif arg in ('de', 'pl', 'ru'):

Upvotes: 4

Related Questions