Class: DataTables::Modules::Search

Inherits:
Object
  • Object
show all
Defined in:
lib/data_tables/modules/search.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(scope, request_parameters) ⇒ Search

Returns a new instance of Search.



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# File 'lib/data_tables/modules/search.rb', line 7

def initialize(scope, request_parameters)
  @scope = scope
  @request_parameters = request_parameters
end

Instance Attribute Details

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/data_tables/modules/search.rb', line 5

def context
  @context
end

#scope ⇒ Object (readonly)

Returns the value of attribute scope.



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# File 'lib/data_tables/modules/search.rb', line 5

def scope
  @scope
end

Instance Method Details

#build_search(model, in_hash, join_hash = nil) ⇒ Object 



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# File 'lib/data_tables/modules/search.rb', line 27

def build_search(model, in_hash, join_hash = nil)
  # Tuple!
  return in_hash.inject([]) { |queries, (column, query)|
    case query
    when Hash
      if (assoc = model.reflect_on_association(column))
        new_queries, join_class = build_search(assoc.klass, query)

        join_hash = join_class.nil? ? [column] : {column => join_class}

        queries << new_queries.reduce(:and)
      else
        warn("trying to reflect on #{column} but #{model.class.name} has no such association.")
      end
    else
      search_by_type(model, column, query) do |result|
        queries << result
      end
    end
    queries
  }, join_hash
end

#search ⇒ Object 



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# File 'lib/data_tables/modules/search.rb', line 12

def search
  default_search = @request_parameters.dig(:search, :value)

  model = @scope.try(:model) || @scope
  columns = searchable_columns(default_search)

  searches = DataTables::Responder.flat_keys_to_nested columns

  search_by, join_hash = build_search(model, searches)

  @scope = @scope.joins(join_hash)

  @scope.where(search_by.reduce(:and))
end