class

Avram::Attribute(T)

Inherits Reference < Object

Constructors

new(name : Symbol, value : T | Nil, param_key : String, param : Array(String) | Avram::Uploadable | String | Nil = nil)
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Instance methods

[](key)
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[]?(key)
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add_error(message : String = "is invalid")
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add_error(message : Proc | Avram::CallableErrorMessage)
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allow_blank=(allow_blank : Bool)

This can be used as an escape hatch when you may have a blank string that's allowed to be saved.

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allow_blank?

This can be used as an escape hatch when you may have a blank string that's allowed to be saved.

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changed?(from : T | Nil | Nothing = IGNORE, to : T | Nil | Nothing = IGNORE) : Bool
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errors
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extract(params : Avram::Paramable)
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name
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original_value
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param
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param_key
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permitted
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reset_errors
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to_f
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to_f64
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to_i
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to_i32
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to_i64
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to_s(time_format : String)

NOTE: to_s(io : IO) is used when passing an object in to string interpolation. Don't override that method.

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to_s

These methods may accidentally get called on attributes inside of operations. Since these methods don't exist, chances are, you meant to call them on the value.

username.to_s
# VS
username.value.to_s
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valid?
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value
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value=(value : T | Nil)
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Macros

call_value_instead_error_message(method)
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Nested types