Class: CSVImporter::ColumnDefinition

Inherits:
Object
  • Object
show all
Defined in:
lib/csv_importer/column_definition.rb

Overview

Define a column. Called from the DSL via ‘column.

Examples

# the csv column "email" will be assigned to the `email` attribute
column :email

# the csv column matching /email/i will be assigned to the `email` attribute
column :email, as: /email/i

# the csv column matching "First name" or "Prénom" will be assigned to the `first_name` attribute
column :first_name, as: [/first ?name/i, /pr(é|e)nom/i]

# the csv column "first_name" will be assigned to the `f_name` attribute
column :first_name, to: :f_name

# email will be downcased
column :email, to: ->(email) { email.downcase }

# transform `confirmed` to `confirmed_at`
column :confirmed, to: ->(confirmed, model) do
  model.confirmed_at = confirmed == "true" ? Time.new(2012) : nil
end

Instance Method Summary collapse

Instance Method Details

#attribute ⇒ Object

The model attribute that this column targets



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# File 'lib/csv_importer/column_definition.rb', line 35

def attribute
  if to.is_a?(Symbol)
    to
  else
    name
  end
end

#match?(column_name, search_query = (as || name)) ⇒ Boolean

Return true if column definition matches the column name passed in.

Returns:

  • (Boolean) 


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# File 'lib/csv_importer/column_definition.rb', line 44

def match?(column_name, search_query=(as || name))
  return false if column_name.nil?

  downcased_column_name = column_name.downcase
  underscored_column_name = downcased_column_name.gsub(/\s+/, '_')

  case search_query
  when Symbol
    underscored_column_name == search_query.to_s
  when String
    downcased_column_name == search_query.downcase
  when Regexp
    column_name =~ search_query
  when Array
    search_query.any? { |query| match?(column_name, query) }
  else
    raise Error, "Invalid `as`. Should be a Symbol, String, Regexp or Array - was #{as.inspect}"
  end
end