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Versions: 4
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Contents
module CSVImporter
# The CSV Header
class Header
include Virtus.model
attribute :column_definitions, Array[ColumnDefinition]
attribute :column_names, Array[String]
def columns
column_names.map do |column_name|
# ensure column name escapes invisible characters
column_name = column_name.gsub(/[^[:print:]]/, '')
Column.new(
name: column_name,
definition: find_column_definition(column_name)
)
end
end
def column_name_for_model_attribute(attribute)
if column = columns.find { |column| column.definition.attribute == attribute if column.definition }
column.name
end
end
def valid?
missing_required_columns.empty?
end
# Returns Array[String]
def required_columns
column_definitions.select(&:required?).map(&:name)
end
# Returns Array[String]
def extra_columns
columns.reject(&:definition).map(&:name).map(&:to_s)
end
# Returns Array[String]
def missing_required_columns
(column_definitions.select(&:required?) - columns.map(&:definition)).map(&:name).map(&:to_s)
end
# Returns Array[String]
def missing_columns
(column_definitions - columns.map(&:definition)).map(&:name).map(&:to_s)
end
private
def find_column_definition(name)
column_definitions.find do |column_definition|
column_definition.match?(name)
end
end
def column_definition_names
column_definitions.map(&:name).map(&:to_s)
end
end
end
Version data entries
4 entries across 4 versions & 2 rubygems