Class: Mongoid::DataTable::Proxy

Inherits:
Relations::Proxy
  • Object
show all
Defined in:
lib/mongoid/data_table/proxy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, controller, options = {}, &block) ⇒ Proxy

Returns a new instance of Proxy.



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# File 'lib/mongoid/data_table/proxy.rb', line 24

def initialize(klass, controller, options = {}, &block)
  @klass      = klass
  @controller = controller
  @cookies    = @controller.send(:cookies)
  @options    = klass.data_table_options.merge(options)
  @extension  = block || options[:dataset] || klass.data_table_dataset || default_data_table_dataset

  @params   = options[:params]   || (controller.params.dup rescue {})
  @criteria = options[:criteria] || klass.criteria
  @unscoped = options[:unscoped] || klass.unscoped
  @fields   = options[:fields]   || klass.data_table_fields
  @aliases  = options[:aliases]  || @fields

  @locals = options[:locals] || {}

  params[:iDisplayLength] = conditions.count if (params[:iDisplayLength].to_i rescue 0) == -1

  @cookie_prefix = options[:cookie_prefix] || 'SpryMedia_DataTables_'
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object (private)

:nodoc:



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# File 'lib/mongoid/data_table/proxy.rb', line 215

def method_missing(method, *args, &block) #:nodoc:
  collection.send(method, *args, &block)
end

Instance Attribute Details

#aliases ⇒ Object (readonly)

Returns the value of attribute aliases.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def aliases
  @aliases
end

#controller ⇒ Object (readonly)

Returns the value of attribute controller.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def controller
  @controller
end

#cookie ⇒ Object (readonly)

Returns the value of attribute cookie.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def cookie
  @cookie
end

#cookie_prefix ⇒ Object (readonly)

Returns the value of attribute cookie_prefix.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def cookie_prefix
  @cookie_prefix
end

#cookies ⇒ Object (readonly)

Returns the value of attribute cookies.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def cookies
  @cookies
end

#criteria ⇒ Object (readonly)

Returns the value of attribute criteria.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def criteria
  @criteria
end

#extension ⇒ Object (readonly)

Returns the value of attribute extension.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def extension
  @extension
end

#fields ⇒ Object (readonly)

Returns the value of attribute fields.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def fields
  @fields
end

#klass ⇒ Object (readonly)

Returns the value of attribute klass.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def klass
  @klass
end

#locals ⇒ Object (readonly)

Returns the value of attribute locals.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def locals
  @locals
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def options
  @options
end

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def params
  @params
end

#unscoped ⇒ Object (readonly)

Returns the value of attribute unscoped.



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# File 'lib/mongoid/data_table/proxy.rb', line 10

def unscoped
  @unscoped
end

Instance Method Details

#as_json(options = nil, &inline_block) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 136

def as_json(options = nil, &inline_block)
  to_hash(&inline_block).to_json(options)
end

#collection(force = false) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 44

def collection(force = false)
  reload if force
  @collection ||= conditions.page(current_page).per(per_page)
end

#conditions ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 115

def conditions
  criteria.order_by(order_by_conditions).where(filter_conditions).where(filter_field_conditions)
end

#current_page ⇒ Object

pagination options ##



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# File 'lib/mongoid/data_table/proxy.rb', line 107

def current_page
  params[:page].present? ? params[:page].to_i : (params[:iDisplayStart].to_i/params[:iDisplayLength].to_i rescue 0)+1
end

#load_cookie!(sInstance = nil) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 53

def load_cookie!(sInstance = nil)
  sInstance ||= options[:sInstance]
  @cookie = @cookies[cookie_name(sInstance)]
  begin
    @cookie = ::JSON.load(cookie) if cookie.is_a?(String)
  rescue
    @cookie = nil
    @cookies.delete cookie_name(sInstance)
    return self
  end
  if cookie.present?

    state_params = HashWithIndifferentAccess.new.tap do |h|

      h[:iDisplayStart]  = cookie['iStart']
      h[:iDisplayLength] = cookie['iLength']
      h[:sSearch]        = cookie['sFilter']

      h[:iSortCol_0], h[:sSortDir_0] = (cookie['aaSorting'].first rescue [ nil, nil ])

      begin
        cookie['aaSearchCols'].each_with_index do |(value,regex),index|
          h[:"bRegex_#{index}"]  = !regex
          h[:"sSearch_#{index}"] = value
        end
      rescue
        # do nothing
      end

    end

    params.merge!(state_params)

    @collection = nil

  end
  return self
end

#per_page ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 111

def per_page
  (params[:iDisplayLength] || options[:per_page] || klass.per_page rescue 10).to_i
end

#reload ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 49

def reload
  (@collection = nil).nil?
end

#search_fields ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 92

def search_fields
  return [] if cookie.blank?
  array = []
  begin
    cookie['aaSearchCols'].each_with_index do |(value,regex),index|
      array.push(URI.decode(value.to_s))
    end
  rescue
    # do nothing
  end
  return array
end

#to_hash(&inline_block) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 119

def to_hash(&inline_block)
  inline_block = extension unless block_given?
  {
    :sEcho => params[:sEcho].to_i,
    :iTotalRecords => unscoped.count,
    :iTotalDisplayRecords => conditions.count,
    :aaData => collection.map do |object|
      data = controller.instance_eval { inline_block.call(object) }
      data.inject(data.is_a?(Hash) ? {} : []) do |result, item|
        Rails.logger.silence do
          controller.instance_eval(&render_data_table_block(klass, item, object, result))
        end
      end
    end
  }
end

#to_json(*args, &inline_block) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 140

def to_json(*args, &inline_block)
  as_json(*args, &inline_block)
end