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 25

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.symbolize_keys
  @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 262

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(sInstance = nil) ⇒ 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

#raw_cookie ⇒ Object (readonly)

Returns the value of attribute raw_cookie.



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

def raw_cookie
  @raw_cookie
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 183

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 45

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 162

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

#cookie!(sInstance = nil) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 58

def cookie!(sInstance = nil)
  @cookie = nil
  sInstance ||= options[:sInstance]
  @raw_cookie = cookies[cookie_name(sInstance)]
  begin
    @cookie = ::JSON.load(raw_cookie) if raw_cookie.kind_of?(String)
  rescue JSON::ParserError
    cookies.delete cookie_name(sInstance)
    @cookie = {}
  ensure
    (@cookie ||= {}).symbolize_keys!
  end
end

#current_page ⇒ Object

pagination options ##



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# File 'lib/mongoid/data_table/proxy.rb', line 154

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 72

def load_cookie!(sInstance = nil)
  tap do

    cookie!(sInstance)

    if cookie.present? and cookie.kind_of?(Hash)
      load_defaults!(cookie)
    elsif (defaults = options[:defaults]).present? and defaults.kind_of?(Hash)
      load_defaults!(defaults)
    end

  end
end

#load_defaults!(defaults = {}) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 86

def load_defaults!(defaults = {})
  tap do
    state_params = Hash.new.tap do |hash|
      hash[:iDisplayStart]  = defaults[:iStart]  if defaults.has_key?(:iStart)
      hash[:iDisplayLength] = defaults[:iLength] if defaults.has_key?(:iLength)
      hash[:sSearch]        = defaults[:sFilter] if defaults.has_key?(:sFilter)

      if defaults.has_key?(:aaSorting)
        sorting = [*defaults[:aaSorting]].first

        hash[:iSortCol_0] = [*sorting][0]
        hash[:sSortDir_0] = [*sorting][1]
      end

      if defaults.has_key?(:aoSearchCols)
        [*defaults[:aoSearchCols]].each_with_index do |oSearch, index|
          if oSearch.kind_of?(Hash)
            oSearch.symbolize_keys!
            hash[:"bRegex_#{index}"]  = oSearch[:bRegex]
            hash[:"sSearch_#{index}"] = URI.decode(oSearch[:sSearch])
          else
            hash[:"sSearch_#{index}"] = URI.decode(oSearch.to_s)
          end
        end
      elsif defaults.has_key?(:aaSearchCols)
        begin
          [*defaults[:aaSearchCols]].each_with_index do |(value,regex),index|
            hash[:"bRegex_#{index}"]  = !regex
            hash[:"sSearch_#{index}"] = URI.decode(value)
          end
        rescue
          # do nothing
        end
      end
    end

    params.merge!(state_params)

    @collection = nil
  end
end

#per_page ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 158

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 50

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

#search_fields ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 128

def search_fields
  return [] if cookie.blank? or not cookie.kind_of?(Hash)
  [].tap do |array|

    if cookie.has_key?(:aoSearchCols)
      [*cookie[:aoSearchCols]].each_with_index do |oSearch, index|
        if oSearch.kind_of?(Hash)
          oSearch.symbolize_keys!
          array.push(URI.decode(oSearch[:sSearch].to_s))
        end
      end
    else
      begin
        [*cookie[:aaSearchCols]].each_with_index do |(value,regex),index|
          array.push(URI.decode(value.to_s))
        end
      rescue
        # do nothing
      end
    end

  end
end

#to_hash(&inline_block) ⇒ Object 



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# File 'lib/mongoid/data_table/proxy.rb', line 166

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_warnings 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 187

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