Module: Categoryz3::Categorizable

Extended by:
ActiveSupport::Concern
Defined in:
lib/categoryz3/categorizable.rb

Overview

Adds the categorizable behavior to models

This will give the model 2 scopes:

* inside_category(category) : Filter objects that belongs to the category or any of it's subcategories
* having_category(category) : Filter objects that belongs only to the category

And 2 new relations:

* direct_category_items : This maps the model to the categories it is directly linked
* child_category_items : This is an auxiliary relation to fast map the objet to any subcategory

Instance Method Summary collapse

Instance Method Details

#categories_list ⇒ Object

Public: Returns the id list of the categories linked to the model



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# File 'lib/categoryz3/categorizable.rb', line 66

def categories_list
  categories.map(&:id).join(",")
end

#categories_list=(ids) ⇒ Object

Public: Accepts an array of category ids as parameter and adds all of them to the model



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# File 'lib/categoryz3/categorizable.rb', line 73

def categories_list=(ids)
  ids = ids.is_a?(String) ? ids.split(',') : ids
  self.categories = ids.map do |id|
    Category.where(id: id).first
  end
end

#remove_category(*categories) ⇒ Object Also known as: remove_categories

Public: Removes a category, or categories, from the model

Examples:

categorizable_object.remove_category dummy_category
categorizable_object.remove_categories dummy_category1, dummy_category2



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# File 'lib/categoryz3/categorizable.rb', line 56

def remove_category(*categories)
  categories.each do |category|
    direct_category_items.where(category_id: category).destroy_all
  end
  @categories = nil
end