Class: Mensa::Filter

Inherits:
Object
  • Object
show all
Includes:
ConfigReaders
Defined in:
app/tables/mensa/filter.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(column:, config:, table:) ⇒ Filter

Returns a new instance of Filter.



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# File 'app/tables/mensa/filter.rb', line 33

def initialize(column:, config:, table:)
  @column = column
  @config = self.class.definition.merge(config || {})
  @table = table
end

Instance Attribute Details

#column ⇒ Object (readonly)

Returns the value of attribute column.



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# File 'app/tables/mensa/filter.rb', line 9

def column
  @column
end

#table ⇒ Object (readonly)

Returns the value of attribute table.



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# File 'app/tables/mensa/filter.rb', line 9

def table
  @table
end

Class Method Details

.OPERATORS ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 17

def OPERATORS
  [
    [:is, I18n.t("mensa.operators.is"), true],
    [:isnt, I18n.t("mensa.operators.isnt"), true],
    [:matches, I18n.t("mensa.operators.matches"), true],
    [:does_not_match, I18n.t("mensa.operators.does_not_match"), true],
    [:gt, I18n.t("mensa.operators.gt"), true],
    [:gteq, I18n.t("mensa.operators.gteq"), true],
    [:lt, I18n.t("mensa.operators.lt"), true],
    [:lteq, I18n.t("mensa.operators.lteq"), true],
    [:is_current, I18n.t("mensa.operators.is_current"), false],
    [:is_empty, I18n.t("mensa.operators.is_empty"), false]
  ].freeze
end

Instance Method Details

#as ⇒ Object

This defines how the filter should be displayed in the value popover :select => as a select input :checkbox => as a checkbox input :string => as a text input



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# File 'app/tables/mensa/filter.rb', line 57

def as
  config[:as]
end

#collection ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 43

def collection
  return unless config&.key?(:collection)

  if config[:collection].is_a? Proc
    table.original_view_context.instance_exec(&config[:collection])
  else
    config[:collection]
  end
end

#filter_scope(record_scope) ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 77

def filter_scope(record_scope)
  if scope
    record_scope.instance_exec(normalize(value), &scope)
  else
    case operator
    when :is_empty
      if column.type == :string
        record_scope.where("#{column.attribute_for_condition} IS NULL OR #{column.attribute_for_condition} = ''")
      else
        record_scope.where("#{column.attribute_for_condition} IS NULL")
      end
    when :is_current
      record_scope.where("#{column.attribute_for_condition} = ?", Current.send(column.name))
    when :matches
      record_scope.where("#{column.attribute_for_condition} LIKE ?", "%#{normalize(value)}%")
    when :does_not_match
      record_scope.where("#{column.attribute_for_condition} NOT LIKE ?", "%#{normalize(value)}%")
    when :is
      val = value.is_a?(Array) ? value : normalize(value)
      record_scope.where(column.attribute_for_condition => val)
    when :isnt
      val = value.is_a?(Array) ? value : normalize(value)
      record_scope.where.not(column.attribute_for_condition => val)
    when :gt
      record_scope.where(column.table.model.arel_table[column.attribute_for_condition].gt(normalize(value)))
    when :lt
      record_scope.where(column.table.model.arel_table[column.attribute_for_condition].lt(normalize(value)))
    when :gteq
      record_scope.where(column.table.model.arel_table[column.attribute_for_condition].gteq(normalize(value)))
    when :lteq
      record_scope.where(column.table.model.arel_table[column.attribute_for_condition].lteq(normalize(value)))
    else
      # Ignore unknown operators
      record_scope
    end
  end
end

#formatted_value ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 67

def formatted_value
  options = collection_options

  if value.is_a?(Array)
    value.map { |entry| label_for_value(entry, options) }.join(", ")
  else
    label_for_value(value, options)
  end
end

#input_type ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 137

def input_type
  case column.type
  when :integer
    "number"
  when :date
    "date"
  when :datetime
    "datetime-local"
  else
    "text"
  end
end

#multiple? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/tables/mensa/filter.rb', line 39

def multiple?
  !!multiple
end

#operator_label ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 129

def operator_label
  Mensa::Filter.OPERATORS.find { |op| op[0] == operator }[1]
end

#operator_with_value? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/tables/mensa/filter.rb', line 133

def operator_with_value?
  Mensa::Filter.OPERATORS.find { |op| op[0] == operator }[2]
end

#operators ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 115

def operators
  operators = Mensa::Filter.OPERATORS.dup
  if config[:operators].present?
    operators = operators.select { |op| config[:operators].include?(op[0]) }
  else
    operators.delete_if { |op| op[0] == :is_current } unless Current.method_defined?(column.name, false)
    operators.delete_if { |op| [:matches, :does_not_match].include?(op[0]) } if collection.present?
    operators.delete_if { |op| [:matches, :does_not_match].include?(op[0]) } if column.type == :integer || column.type == :date || column.type == :datetime
    operators.delete_if { |op| [:is, :isnt].include?(op[0]) } if column.type == :date || column.type == :datetime
    operators.delete_if { |op| [:gt, :lt, :gteq, :lteq].include?(op[0]) } if column.type == :string || column.type.blank?
  end
  operators
end

#to_s ⇒ Object 



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# File 'app/tables/mensa/filter.rb', line 61

def to_s
  parts = [column.human_name, operator_label]
  parts << formatted_value if formatted_value.present? && operator_with_value?
  parts.join(" ")
end