Class: Import

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/import.rb

Overview

Schema Information

Table name: imports

id           :integer          not null, primary key
assignment   :text
target_model :string(255)
successful   :boolean
upload_id    :integer
separator    :string(255)      default(",")
result       :text
created_at   :datetime         not null
updated_at   :datetime         not null

Constant Summary collapse

BlockedAttributes = 
["id", "created_at", "updated_at", "url_name", "slug"]

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(meth, *args, &block) ⇒ Object 



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# File 'app/models/import.rb', line 40

def method_missing(meth, *args, &block)
  if meth.to_s.include?("assignment_") && self.assignment.present?
    self.assignment[meth.to_s.split("_")[1]]
  end
end

Instance Method Details

#analyze_csv ⇒ Object 



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# File 'app/models/import.rb', line 23

def analyze_csv
  result = []
  data = CSV.read(self.upload.image.path, {:col_sep => self.separator})
  data.first.each_with_index do |a, index|
    result << [a,index.to_s]
  end
  @analyze_csv ||= result
end

#get_association_names ⇒ Object 



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# File 'app/models/import.rb', line 36

def get_association_names
  self.target_model.constantize.reflect_on_all_associations.collect { |r| r.name }
end

#get_model_attributes ⇒ Object 



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# File 'app/models/import.rb', line 32

def get_model_attributes
  @get_model_attributes ||= eval("#{self.target_model}.new.attributes").delete_if{|a| BlockedAttributes.include?(a) }.keys
end

#run! ⇒ Object 



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# File 'app/models/import.rb', line 50

def run!
  self.result = []
  count = 0
  CSV.foreach(self.upload.image.path, {:col_sep => self.separator} ) do |row|
    new_object = self.target_model.constantize.new
    self.assignment.each do |key,value|
      next if value.blank?
      attr_name = key
      attr_value = row[value.to_i]
      new_object.send("#{attr_name}=", attr_value)
    end
    unless new_object.save
      self.result << "#{count} - #{new_object.errors.messages}"
    end
    count += 1
  end
  self.save
end

#status ⇒ Object 



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# File 'app/models/import.rb', line 46

def status
  @status ||="ready to import"
end