[default] /key

• (/)

• NO

The key value to filter on.

minValue (Minimum Value)

• (X)

• NO

If specified, the number must be greater than or equal to the specified value.

maxValue (Maximum Value)

• (X)

• NO

If specified, the number must be less than or equal to the specified value.

aboveValue

• (X)

• NO

The key value must be above this. (Exclusive)

belowValue

• (X)

• NO

The key value must be below this. (Exclusive)

value (Exact Value)

• (X)

• NO

(Since 3.4.0) The exact value the key value must equal. 

decimal

• (X)

• NO

false

If specified, setting it to true will require that the number is a decimal type, and setting it to false will require it is a whole number. By default either is accepted. 

required

• (X)

• NO

false

If set to true, the key value must have a value of some sort - it may not be empty.