Class: Pragma::Operation::Index

Inherits:
Base
  • Object
show all
Includes:
Defaults
Defined in:
lib/pragma/operation/index.rb

Overview

Finds all records of the requested resource, authorizes them, paginates them and returns the decorated collection.

Author:

  • Alessandro Desantis

Instance Method Summary collapse

Methods included from Defaults

included

Instance Method Details

#call ⇒ Object 



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# File 'lib/pragma/operation/index.rb', line 11

def call
  context.records = authorize_collection(find_records)

  begin
    context.records = context.records.paginate(page: page, per_page: per_page)
  rescue RangeError => e
    respond_with!(
      status: :bad_request,
      resource: {
        error_type: :invalid_page,
        error_message: e.message
      }
    )
  end

  respond_with(
    resource: decorate(context.records),
    status: :ok,
    headers: {
      'Page' => context.records.current_page.to_i,
      'Per-Page' => context.records.per_page,
      'Total' => context.records.total_entries
    },
    links: {
      first: build_page_url(1),
      last: build_page_url(context.records.total_pages),
      next: (build_page_url(context.records.next_page) if context.records.next_page),
      prev: (build_page_url(context.records.previous_page) if context.records.previous_page)
    }
  )
end