Number field

Add a number input with optional minimum, maximum, and allowed increments.

Use field.Number for a finite JSON number: a price, score, quantity, percentage, or measurement. Generated TypeScript uses number; numeric strings are not accepted.

In the admin

A populated Priority number field in the Ridu admin with bounded numeric input.

Bounds constrain the editor and server; the API accepts JSON numbers, not numeric strings.

Add a number input

content/products.go

field.Number("price").Required().Min(0)

Submitting "19.99" as a string is invalid. Send 19.99 as a JSON number.

Configuration

Constructor or method	What it controls
`field.Number(name)`	Creates a stored finite JSON number.
`.Required()`	Rejects a missing or null number. Zero remains a present value.
`.Min(value)` / `.Max(value)`	Sets inclusive numeric bounds.
`.Step(value)`	Requires values on the allowed increment and configures the admin input step.
`.Default(value)` / `.DefaultFrom(callback)`	Supplies a fixed or request-aware initial number.
`.Unique()` / `.Index()`	Enforces distinct values or adds a query index.
`.Localized()` / `.Validate(...)` / `.LiveValidate(...)`	Enables translated values and application-specific checks.

Set limits and allowed increments

content/reviews.go

field.Number("rating").Required().Min(1).Max(5).Step(0.5).Default(3)

Min(1) allows 1 and higher; Max(5) allows 5 and lower. Step(0.5) allows increments of 0.5 and sets the step used by the admin input. All submitted values must be finite; NaN and infinities are not JSON values and are rejected before storage. Number also supports localization, uniqueness/indexing, conditions, and the shared presentation options.

.Default(3) supplies the initial rating when it is omitted. To calculate an initial number on the server, use .DefaultFrom(callback) and return operation.Value[float64]. The result still has to satisfy Min, Max, and Step. See Set default field values.

Number filters include equality and ordered comparisons, and numeric fields can be sorted. A localized number has an independent value per content locale; use it for locale-specific content such as a regional price, not display formatting.

Common mistakes

JSON numbers are floating-point values in JavaScript and TypeScript. For currency that requires exact minor units, store an integer amount (for example cents) and document that unit.
A placeholder such as 0 is not a default. Use .Default(0) to store zero when the field is omitted on create. An explicitly supplied null does not trigger a default.
Step is a value constraint, not a rounding instruction. Normalize application calculations before submission.

See field.Number and query operators.

For an ordered list of numeric values, use NumberList. Its callbacks receive []float64; scalar Number continues receiving float64.