Class: ForestLiana::ResourcesGetter

Inherits:
BaseGetter show all
Defined in:
app/services/forest_liana/resources_getter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from BaseGetter

#get_collection, #get_resource

Constructor Details

#initialize(resource, params) ⇒ ResourcesGetter

Returns a new instance of ResourcesGetter.



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# File 'app/services/forest_liana/resources_getter.rb', line 7

def initialize(resource, params)
  @resource = resource
  @params = params
  @count_needs_includes = false
  @collection_name = ForestLiana.name_for(@resource)
  @collection = get_collection(@collection_name)
  @fields_to_serialize = get_fields_to_serialize
  @field_names_requested = field_names_requested
  get_segment()
  compute_includes()
  @search_query_builder = SearchQueryBuilder.new(@params, @includes, @collection)

  prepare_query()
end

Instance Attribute Details

#includes ⇒ Object (readonly)

Returns the value of attribute includes.



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# File 'app/services/forest_liana/resources_getter.rb', line 4

def includes
  @includes
end

#records_count ⇒ Object (readonly)

Returns the value of attribute records_count.



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# File 'app/services/forest_liana/resources_getter.rb', line 5

def records_count
  @records_count
end

#search_query_builder ⇒ Object (readonly)

Returns the value of attribute search_query_builder.



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# File 'app/services/forest_liana/resources_getter.rb', line 3

def search_query_builder
  @search_query_builder
end

Instance Method Details

#compute_includes ⇒ Object 



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# File 'app/services/forest_liana/resources_getter.rb', line 41

def compute_includes
  associations_has_one = ForestLiana::QueryHelper.get_one_associations(@resource)

  includes = associations_has_one.map(&:name)
  includes_for_smart_search = []

  if @collection && @collection.search_fields
    includes_for_smart_search = @collection.search_fields
      .select { |field| field.include? '.' }
      .map { |field| field.split('.').first.to_sym }

    includes_has_many = SchemaUtils.many_associations(@resource)
      .select { |association| SchemaUtils.model_included?(association.klass) }
      .map(&:name)

    includes_for_smart_search = includes_for_smart_search & includes_has_many
  end

  if @field_names_requested
    @includes = (includes & @field_names_requested).concat(includes_for_smart_search)
  else
    @includes = includes
  end
end

#count ⇒ Object 



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# File 'app/services/forest_liana/resources_getter.rb', line 27

def count
  # NOTICE: For performance reasons, do not eager load the data if there is  no search or
  #         filters on associations.
  @records_count = @count_needs_includes ? @records.eager_load(@includes).count : @records.count
end

#includes_for_serialization ⇒ Object 



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# File 'app/services/forest_liana/resources_getter.rb', line 66

def includes_for_serialization
  super & @fields_to_serialize.map(&:to_s)
end

#perform ⇒ Object 



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# File 'app/services/forest_liana/resources_getter.rb', line 22

def perform
  @records = @records.eager_load(@includes)
  @records_sorted = sort_query
end

#query_for_batch ⇒ Object 



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# File 'app/services/forest_liana/resources_getter.rb', line 33

def query_for_batch
  @records
end

#records ⇒ Object 



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# File 'app/services/forest_liana/resources_getter.rb', line 37

def records
  @records_sorted.offset(offset).limit(limit).to_a
end