Zotonic
  • Search
  • User Guide
  • Developer Guide
  • Cookbooks
  • Reference
  • Articles and Video
  • Made with Zotonic
  • Demo
  • User Guide
    • CMS
    • The Zotonic data model
    • User management
    • Issues and features
  • Developer Guide
    • Introduction
    • Getting Started
    • Docker
    • Directory structure
    • Sites
    • The Status site
    • Controllers
    • Dispatch rules
    • Resources
    • Templates
    • CSS classes used in templates
    • Media
    • Icons
    • Forms and validation
    • Search
    • Translation
    • Wires
    • Access control
    • Modules
    • Notifications
    • Browser/server interaction
    • E-mail handling
    • Command-line shell
    • Logging
    • Testing sites
    • Deployment
    • Troubleshooting
    • Contributing to Zotonic
    • Release Notes
    • Upgrade notes
  • Cookbooks
    • Admin cookbook
    • Frontend cookbook
    • Just enough…
    • Other cookbooks
    • Shell cookbook
  • Reference
    • Modules
    • Actions
    • Controllers
    • Filters
      • Binaries
      • Booleans
      • Dates
      • Encryption
      • Character escaping
      • Forms
      • HTML
      • Lists
      • Mailing list
      • Menu
      • Miscellaneous
      • Numbers
      • Regular Expressions
      • Resource lists
      • Resources
      • Strings
      • Survey
      • Translation
      • Tuples
      • URLs and links
      • Variables
        • to_binary
        • as_atom
        • pprint
        • make_value
        • if_undefined
        • is_defined
        • is_undefined
        • if
        • to_integer
        • default
        • to_json
        • from_json
    • Tags
    • Global template variables
    • Models
    • Validators
    • Notifications
    • Installation requirements
    • Configuration
    • Command-line
  • Glossary

make_value

Module

mod_base

Todo

Not yet documented.

Edit on GitHub

pprint Variables if_undefined

GitHub © 2025 Zotonic