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Versions: 10
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Contents
module ActiveRecordCSVImporter
# 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|
Column.new(
name: column_name,
definition: find_column_definition(column_name)
)
end
end
# original csv column names
def columns_with_definition_names
columns.select(&:definition).map(&:name)
end
# mapped column names
def column_definition_names
columns.map { |c| c.definition.name if c.definition }.compact
end
def column_name_for_model_attribute(attribute)
column = columns.find { |c|
c.definition.attribute == attribute if c.definition
}
column.name if column
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 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 { |column_definition|
column_definition.match?(name)
}
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems