Contents

module RailsServersideDatatables

  module ViewHelpers
    def serverside_datatable( serverside_path, id, config = {}, parameters = {} )
      # Our table requires an id
      config[ :id ] = id

      # Fetch the internal definition of the table
      raw_configuration = serverside_datatable_config_request( serverside_path, parameters )

      columns = []
      begin
        # Try to parse the (hopefully) JSON encoded response
        configuration = JSON.parse( raw_configuration )

        # Parse column information
        configuration[ 'columns' ].each do |column|
          columns.push( column.to_a.map { |f| [f.first.to_sym, f.last] }.to_h )
        end

      rescue Exception => e
        raise 'Auto config failed - invalid response. Could not parse response. Details: ' + e.message
      end

      # Required in erb file...
      filterable = columns.select { |c| c[:column_filtering] }


      # Render the actual content
      ERB.new(
          File.read( File.dirname( __FILE__ ) + '/datatable.html.erb' )
      ).result( binding ).html_safe
    end

    private
    def serverside_datatable_config_request( url, parameters )
      parameters[ 'dt_config'  ]   = true

      # Route request internally
      request = Rack::MockRequest.env_for(
          url, params: parameters.to_query
      ).merge({ 'rack.session': session })
      
      # Fix for devise etc.
      request[ 'warden' ] = self.request.env[ 'warden' ] if self.request.key? 'warden'

      # Fetch configuration from the serverside definition
      response = Rails.application.routes.call( request )

      raise 'Auto config failed - invalid response. HTTP error code: ' + response.first unless response.first == 200

      # Return the acutal content
      response.last.body
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
rails_serverside_datatables-0.1.3	lib/rails_serverside_datatables/views/view_helpers.rb