Class: RecordRoo::DataSource

Inherits:
Object
  • Object
show all
Defined in:
lib/record_roo/data_source.rb

Overview

This class wraps a spreadsheet file. It provides two methods:

  • parse for reading the file content as an array of arrays,

  • model_generator for create a collection of class instances based on a given class.

Instance Method Summary collapse

Constructor Details

#initialize(filepath) ⇒ DataSource

Returns a new instance of DataSource.



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# File 'lib/record_roo/data_source.rb', line 6

def initialize filepath
  @filepath = filepath
end

Instance Method Details

#model_generator(model_with_attributes) ⇒ Object

Given a class and an attribute list, it produces an array of class instances.



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# File 'lib/record_roo/data_source.rb', line 17

def model_generator model_with_attributes
  parse.drop(1).map do |row|
    model = model_with_attributes[:model]
    object = Hash[model_with_attributes[:attributes].map.with_index(0) do |attr, index|
      [attr, row[index]]
    end]
    model.new(object)
  end
end

#parse ⇒ Object

Returns an array of rows



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# File 'lib/record_roo/data_source.rb', line 11

def parse
  @adapter = Class.instance_eval "RecordRoo::#{adapter}"
  @adapter.parse @filepath
end