Module: Rfm::Scope

Defined in:
lib/rfm/utilities/scope.rb

Constant Summary collapse

SCOPE = 
Proc.new {[]}

Instance Method Summary collapse

Instance Method Details

#apply_scope(args, input_scope = nil) ⇒ Object

Mix scope requests with user requests with a constraining AND logic. Also handles request options.



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# File 'lib/rfm/utilities/scope.rb', line 31

def apply_scope(args, input_scope=nil)
  #puts "APPLY_SCOPE args:#{args} input_scope:#{input_scope}"
  opts = (args.size > 1 && args.last.is_a?(Hash) ? args.pop : {})
  scope_args = opts.delete(:scope_args) || self
  raw_scope = input_scope || opts.delete(:scope) || self::SCOPE
  scope = [raw_scope.is_a?(Proc) ? raw_scope.call(scope_args) : raw_scope].flatten.compact
  #puts "APPLY_SCOPE scope:#{scope}"
  
  return [args].flatten(1).push(opts) if !(args[0].is_a?(Array) || args[0].is_a?(Hash)) || scope.size < 1
  scoped_requests = []
  scope_omits = []
  scope.each do |scope_req|
    if scope_req[:omit]
      scope_omits.push scope_req
      next
    end
    [args].flatten.each do |req|
      scoped_requests.push(req[:omit] ? req : req.merge(scope_req))
    end
  end
  scoped_requests = [args].flatten if scoped_requests.empty? 
  scoped_query = [scoped_requests | scope_omits, opts]
  #puts "APPLY SCOPE output:#{scoped_query}"
  scoped_query
end

#count(*args) ⇒ Object 



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# File 'lib/rfm/utilities/scope.rb', line 24

def count(*args)
  new_args = apply_scope(args)
  super(*new_args)
end

#find(*args) ⇒ Object

Add scoping to Rfm::Base class methods for querying fmp records. Usage:

class MyModel < Rfm::Base
  SCOPE = proc { |optional-scope-args| <single-or-array-of-fmp-request-hashes> }
end

Optionally pass :scope=>fmp-request-hash-or-array or :scope_args=>anything in the FMP request options hash, to be used at scoping time, instead of above scope constant.



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# File 'lib/rfm/utilities/scope.rb', line 19

def find(*args)
  new_args = apply_scope(args)
  super(*new_args)
end