module ActiveAdmin::Filters::ResourceExtension
Public Class Methods
# File lib/active_admin/filters/resource_extension.rb, line 12 def initialize(*) super add_filters_sidebar_section end
Public Instance Methods
Add a filter for this resource. If filters are not enabled, this method will raise a RuntimeError
@param [Symbol] attribute The attribute to filter on @param [Hash] options The set of options that are passed through to
ransack for the field definition.
# File lib/active_admin/filters/resource_extension.rb, line 61 def add_filter(attribute, options = {}) raise Disabled unless filters_enabled? (@filters ||= {})[attribute.to_sym] = options end
Returns the filters for this resource. If filters are not enabled, it will always return an empty array.
@return [Hash] Filters
that apply for this resource
# File lib/active_admin/filters/resource_extension.rb, line 21 def filters filters_enabled? ? filter_lookup : {} end
Setter to enable / disable filters on this resource.
Set to ‘nil` to inherit the setting from the namespace
# File lib/active_admin/filters/resource_extension.rb, line 28 def filters=(bool) @filters_enabled = bool end
@return [Boolean] If filters are enabled for this resource
# File lib/active_admin/filters/resource_extension.rb, line 33 def filters_enabled? @filters_enabled.nil? ? namespace.filters : @filters_enabled end
# File lib/active_admin/filters/resource_extension.rb, line 37 def preserve_default_filters! @preserve_default_filters = true end
# File lib/active_admin/filters/resource_extension.rb, line 41 def preserve_default_filters? @preserve_default_filters == true end
Remove a filter for this resource. If filters are not enabled, this method will raise a RuntimeError
@param [Symbol] attribute The attribute to not filter on
# File lib/active_admin/filters/resource_extension.rb, line 49 def remove_filter(*attributes) raise Disabled unless filters_enabled? attributes.each { |attribute| (@filters_to_remove ||= []) << attribute.to_sym } end
Reset the filters to use defaults
# File lib/active_admin/filters/resource_extension.rb, line 68 def reset_filters! @filters = nil @filters_to_remove = nil end
Private Instance Methods
Returns a default set of filters for the associations
# File lib/active_admin/filters/resource_extension.rb, line 99 def default_association_filters if resource_class.respond_to?(:reflect_on_all_associations) poly, not_poly = resource_class.reflect_on_all_associations.partition{ |r| r.macro == :belongs_to && r.options[:polymorphic] } # remove deeply nested associations not_poly.reject!{ |r| r.chain.length > 2 } filters = poly.map(&:foreign_type) + not_poly.map(&:name) filters.map &:to_sym else [] end end
Returns a default set of filters for the content columns
# File lib/active_admin/filters/resource_extension.rb, line 114 def default_content_filters if resource_class.respond_to? :content_columns resource_class.content_columns.map{ |c| c.name.to_sym } else [] end end
@return [Array] The array of default filters for this resource
# File lib/active_admin/filters/resource_extension.rb, line 94 def default_filters default_association_filters + default_content_filters end
Collapses the waveform, if you will, of which filters should be displayed. Removes filters and adds in default filters as desired.
# File lib/active_admin/filters/resource_extension.rb, line 77 def filter_lookup filters = @filters.try(:dup) || {} if filters.empty? || preserve_default_filters? default_filters.each do |f| filters[f] ||= {} end end if @filters_to_remove @filters_to_remove.each &filters.method(:delete) end filters end