class

Marten::DB::Field::String

Inherits Marten::DB::Field::Base < Reference < Object

Constructors

new(id : ::String, max_size : Int32, min_size : Int32 | Nil = nil, choices : Array(::String) | Nil = nil, primary_key = false, default : ::String | Nil = nil, blank = false, null = false, unique = false, index = false, db_column = nil)

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Instance methods

choices

Returns the allowed string values, or nil if no restriction is configured.

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default

Returns the default string value.

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empty_value?(value) : ::Bool

Returns true if the value is considered empty by the field.

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from_db(value) : ::String | Nil

Converts the raw DB value to the corresponding field value.

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from_db_result_set(result_set : ::DB::ResultSet) : ::String | Nil

Extracts the field value from a DB result set and returns the right object corresponding to this value.

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max_size

Returns the maximum string size allowed.

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min_size

Returns the minimum string size allowed.

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to_column

Returns a migration column object corresponding to the field at hand.

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to_db(value) : ::DB::Any

Converts the field value to the corresponding DB value.

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validate(record, value)

Runs custom validation logic for a specific model field and model object.

This method should be overridden for each field implementation that requires custom validation logic.

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