Class: Datagrid::Filters::DynamicFilter

Inherits:
BaseFilter
  • Object
show all
Includes:
SelectOptions
Defined in:
lib/datagrid/filters/dynamic_filter.rb

Instance Attribute Summary

Attributes inherited from BaseFilter

#block, #grid_class, #name, #options

Instance Method Summary collapse

Methods included from SelectOptions

#include_blank, #prompt, #select

Methods inherited from BaseFilter

#allow_blank?, #allow_nil?, #apply, #default, #default_filter, #default_filter_block, #dummy?, #form_builder_helper_name, form_builder_helper_name, #format, #header, #multiple, #multiple?, #parse, #separator

Constructor Details

#initialize ⇒ DynamicFilter

Returns a new instance of DynamicFilter.



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# File 'lib/datagrid/filters/dynamic_filter.rb', line 7

def initialize(*)
  super
  options[:select] ||= default_select
  unless options.has_key?(:include_blank)
    options[:include_blank] = false
  end
end

Instance Method Details

#default_filter_where(driver, scope, filter) ⇒ Object 



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# File 'lib/datagrid/filters/dynamic_filter.rb', line 26

def default_filter_where(driver, scope, filter)
  field, operation, value = filter
  date_conversion = value.is_a?(Date) && driver.is_timestamp?(scope, field)
  case operation
  when '='
    if date_conversion
      value = Datagrid::Utils.format_date_as_timestamp(value)
    end
    driver.where(scope, field, value)
  when '=~'
    if column_type(field) == :string
      driver.contains(scope, field, value)
    else
      if date_conversion
        value = Datagrid::Utils.format_date_as_timestamp(value)
      end
      driver.where(scope, field, value)
    end
  when '>='
    if date_conversion
      value = value.beginning_of_day
    end
    driver.greater_equal(scope, field, value)
  when '<='
    if date_conversion
      value = value.end_of_day
    end
    driver.less_equal(scope, field, value)
  else
    raise "unknown operation: #{operation.inspect}"
  end
end

#operations_select ⇒ Object 



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# File 'lib/datagrid/filters/dynamic_filter.rb', line 59

def operations_select
  %w(= =~ >= <=).map do |operation|
    [I18n.t(operation, :scope => "datagrid.filters.dynamic.operations").html_safe, operation]
  end
end

#parse_values(filter) ⇒ Object 



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# File 'lib/datagrid/filters/dynamic_filter.rb', line 15

def parse_values(filter)
  field, operation, value = filter

  [field, operation, type_cast(field, value)]
end

#unapplicable_value?(filter) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/datagrid/filters/dynamic_filter.rb', line 21

def unapplicable_value?(filter)
  field, operation, value = filter
  field.blank? || operation.blank? || super(value)
end