Class: ESA::ContextProvider

Inherits:
Object
  • Object
show all
Defined in:
lib/esa/context_provider.rb

Class Method Summary collapse

Class Method Details

.check_subcontexts(context, namespace, options = {}) ⇒ Object 



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# File 'lib/esa/context_provider.rb', line 7

def self.check_subcontexts(context, namespace, options = {})
  existing = existing_subcontexts(context, namespace)
  contained = contained_subcontexts(context, namespace, existing, options)

  created = contained - existing
  created.each do |sub|
    sub.save if sub.new_record? or sub.changed?
  end

  unregistered = contained - context.subcontexts
  context.subcontexts += unregistered

  removed = existing - contained
  context.subcontexts -= removed

  removed.each(&:destroy) if context.can_be_persisted?

  contained
end

.contained_ids(context, options = {}) ⇒ Object 



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# File 'lib/esa/context_provider.rb', line 31

def self.contained_ids(context, options = {})
  []
end

.contained_subcontexts(context, namespace, existing, options = {}) ⇒ Object 



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# File 'lib/esa/context_provider.rb', line 39

def self.contained_subcontexts(context, namespace, existing, options = {})
  contained_ids = contained_ids(context, options)
  existing_grouped = existing.group_by{|sub| context_id(sub, options)}
  existing_ids = existing_grouped.keys

  new_ids = contained_ids - existing_ids

  new_subcontexts = new_ids.map do |id|
    instantiate(context, namespace, id, options)
  end

  keep_subcontexts = existing_grouped.map do |id,group|
    (id.in? contained_ids) ? group.first : nil
  end.compact

  new_subcontexts + keep_subcontexts
end

.context_id(context, options = {}) ⇒ Object 



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# File 'lib/esa/context_provider.rb', line 27

def self.context_id(context, options = {})
  []
end

.existing_subcontexts(context, namespace, options = {}) ⇒ Object 



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# File 'lib/esa/context_provider.rb', line 35

def self.existing_subcontexts(context, namespace, options = {})
  context.subcontexts.where(type: provided_types, namespace: namespace).all
end

.provided_types ⇒ Object 



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# File 'lib/esa/context_provider.rb', line 3

def self.provided_types
  []
end