How to use Django's built-in template tags for working with strings

Django provides a variety of built-in template tags for working with strings in your templates. Here are some of the commonly used ones:

1. length: Returns the length of a string.

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   {% with my_string="Hello, World!" %}
       {{ my_string|length }}
   {% endwith %}
   

2. default: If the variable is undefined or evaluates to False, a default value can be provided.

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   {{ some_variable|default:"No value" }}
   

3. capfirst: Capitalizes the first character of a string.

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   {{ "hello"|capfirst }}
   

4. lower: Converts a string to lowercase.

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   {{ "Hello"|lower }}
   

5. upper: Converts a string to uppercase.

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   {{ "hello"|upper }}
   

6. title: Converts the first character of each word to uppercase.

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   {{ "hello world"|title }}
   

7. truncatewords: Truncates a string after a certain number of words.

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   {{ "This is a long sentence."|truncatewords:3 }}
   

8. truncatechars: Truncates a string after a certain number of characters.

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   {{ "This is a long sentence."|truncatechars:10 }}
   

9. slugify: Converts a string to a valid URL slug.

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   {{ "This is a Title"|slugify }}
   

10. date: Formats a date according to the given format.

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    {{ some_date|date:"F j, Y" }}
    

11. default_if_none: Provides a default value if the variable is None.

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    {{ some_variable|default_if_none:"No value" }}
    

12. join: Joins the elements of a list into a string, using a specified delimiter.

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    {{ my_list|join:", " }}
    

These are just a few examples, and Django provides more template tags for various string manipulation tasks. Make sure to check the official Django documentation for the most up-to-date and comprehensive information: Django Template Language - Built-in Tags and Filters.