Ninja Forms – Unique Fields

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Ninja Forms Unique Fields – powerful add-on that adds field’s uniqueness validation

This plugin simply extends your existing fields in Ninja Forms with new options for uniqueness validation.

Supported Fields

• Email
• Phone
• Date
• Address
• City
• Zip
• State
• Country
• Select
• Number
• First Name
• Last Name
• Single Line Text
• Paragraph Text
• Radio List
• Star Rating

Easily Add New Fields Support

The plugin provides filters that allow you to simply extend support of field types.

Other customization possibilities

• Remove uniqueness options from existing fields
• Control field validation
• Customize error messages
• Add custom validators

Dependencies

Ninja Forms 3 – must be installed and activated before using this plugin

Source