environment_finder.rb
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class EnvironmentFinder
def initialize env
@environment = env
end
def find(asset, query = nil, options={}, finder_method = 'paginate')
@region = Region.find_by_id(options.delete(:region)) if options.has_key?(:region)
if @region && options[:within]
options[:origin] = [@region.lat, @region.lng]
else
options.delete(:within)
end
product_category = options.delete(:product_category)
date_range = options.delete(:date_range)
if finder_method == 'paginate'
options = {:page => 1, :per_page => options.delete(:limit)}.merge(options)
end
if query.blank?
options = {:order => "#{asset_table(asset)}.created_at desc, #{asset_table(asset)}.id desc"}.merge(options)
if product_category && asset == :products
@environment.send(asset).send(finder_method, :all, options.merge(:include => 'product_categorizations', :conditions => ['product_categorizations.category_id = (?)', product_category.id]))
elsif product_category && asset == :enterprises
@environment.send(asset).send(finder_method, :all, options.merge(:order => 'profiles.created_at desc, profiles.id desc', :include => 'products', :joins => 'inner join product_categorizations on (product_categorizations.product_id = products.id)', :conditions => ['product_categorizations.category_id = (?)', product_category.id]))
else
if (asset == :events) && date_range
@environment.send(asset).send(finder_method, :all, options.merge(:conditions => { :start_date => date_range}))
else
@environment.send(asset).send(finder_method, :all, options)
end
end
else
ferret_options = {:page => options.delete(:page), :per_page => options.delete(:per_page)}
if product_category && asset == :products
# SECURITY no risk of SQL injection, since product_category_ids comes from trusted source
@environment.send(asset).find_by_contents(query, ferret_options, options.merge({:include => 'product_categorizations', :conditions => 'product_categorizations.category_id = (%s)' % product_category.id }))
elsif product_category && asset == :enterprises
@environment.send(asset).find_by_contents(query, ferret_options, options.merge(:joins => 'inner join product_categorizations on (product_categorizations.product_id = products.id)', :include => 'products', :conditions => "product_categorizations.category_id = (#{product_category.id})"))
else
@environment.send(asset).find_by_contents(query, ferret_options, options)
end
end
end
def recent(asset, limit = nil)
find(asset, nil, :limit => limit)
end
def count(asset, query = '', options = {})
if query.blank?
find(asset, query, options.except(:page, :per_page), 'count')
else
# will_paginate needs a page
find(asset, query, {:page => 1}.merge(options)).total_entries
end
end
protected
def asset_class(asset)
asset.to_s.singularize.camelize.constantize
end
def asset_table(asset)
asset_class(asset).table_name
end
end