# Extending

URL: /docs/extending/
Section: extending
Tags: extending

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Extending Extend Kida with custom functionality. Filter Custom Filters Transform values with `| filter` Add domain-specific value transformations. Custom Tests Create `is test` predicates Build boolean tests for conditionals. Globe Custom Globals Add global functions and variables Make utilities available everywhere. Folder Custom Loaders Load from databases, APIs, etc. Build custom template sources. Quick Reference from kida import Environment env = Environment() # Custom filter @env.filter() def double(value): return value * 2 # Custom test @env.test() def is_even(value): return value % 2 == 0 # Custom global env.add_global("site_name", "My Site") # Use in templates # {{ count | double }} # {% if count is even %} # {{ site_name }}

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