Class: ActiveFilter::Base

Inherits:
Object
  • Object
show all
Extended by:
ClassMethods
Includes:
Enumerable
Defined in:
lib/active_filter/base.rb

Defined Under Namespace

Modules: ClassMethods

Constant Summary collapse

TYPE_FILTER_MAP = 
{
  primary_key: Filter,
  string: StringFilter,
  text: TextFilter,
  integer: IntegerFilter,
  float:  FloatFilter,
  decimal:  DecimalFilter,
  datetime: DateTimeFilter,
  timestamp: Filter,
  time: TimeFilter,
  date: DateFilter,
  binary: Filter,
  boolean: BooleanFilter,
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from ClassMethods

exclude, fields, order

Constructor Details

#initialize(data, scope = nil) ⇒ Base

Returns a new instance of Base.



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# File 'lib/active_filter/base.rb', line 34

def initialize(data, scope=nil)
  @data = data
  @scope = scope
  columns = self.model.columns

  # fields で指定した列だけをフィルタ可能にする
  fields = self.class.__send__(:_fields)
  columns = _select_columns(columns, fields) unless fields.empty?

  # exclude で指定した列を除外する
  excludes = self.class.__send__(:_exclude)
  columns = _reject_columns(columns, excludes) unless excludes.empty?

  @filters = columns.map { |column|
    _create_filter_from_column(column)
  }
end

Instance Attribute Details

#filters ⇒ Object (readonly)

Returns the value of attribute filters.



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# File 'lib/active_filter/base.rb', line 32

def filters
  @filters
end

Instance Method Details

#each(&block) ⇒ Object 



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# File 'lib/active_filter/base.rb', line 100

def each(&block)
  scope = self.to_scope
  unless block_given?
    return scope.each
  end

  scope.each do |obj|
    block.call(obj)
  end
  self
end

#model ⇒ Object 



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# File 'lib/active_filter/base.rb', line 96

def model
  self.class.__send__(:_model)
end

#to_scope ⇒ Object 



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# File 'lib/active_filter/base.rb', line 112

def to_scope
  scope = _scoped
  matched = false

  @filters.each do |filter|
    lookups = _lookups_from_filter(filter)
    lookups.each do |lookup, lookup_type|
      if @data.include?(lookup)
        converted_value = filter.convert_value(@data[lookup])
        scope = filter.filter(scope, converted_value, lookup_type)
        matched = true
      elsif @data.include?(lookup.to_sym)
        converted_value = filter.convert_value(@data[lookup.to_sym])
        scope = filter.filter(scope, converted_value, lookup_type)
        matched = true
      end
    end
  end

  # ユーザーの入力がフィルタにかからなかった場合は
  # 該当無しにする
  unless matched
    scope = scope.where("1 = 2")
  end

  self.class.__send__(:_orders).each do |order|
    scope = scope.order(order.to_s)
  end

  scope
end