lib/ransack/helpers/form_builder.rb
require 'action_view'
module ActionView::Helpers::Tags
# TODO: Find a better way to solve this issue!
# This patch is needed since this Rails commit:
# https://github.com/rails/rails/commit/c1a118a
class Base
private
if defined? ::ActiveRecord
def value
if @allow_method_names_outside_object
object.send @method_name if object && object.respond_to?(@method_name, true)
else
object.send @method_name if object
end
end
end
end
end
RANSACK_FORM_BUILDER = 'RANSACK_FORM_BUILDER'.freeze
require 'simple_form' if
(ENV[RANSACK_FORM_BUILDER] || ''.freeze).match('SimpleForm'.freeze)
module Ransack
module Helpers
class FormBuilder < (ENV[RANSACK_FORM_BUILDER].try(:constantize) ||
ActionView::Helpers::FormBuilder)
def label(method, *args, &block)
options = args.extract_options!
text = args.first
i18n = options[:i18n] || {}
text ||= object.translate(
method, i18n.reverse_merge(include_associations: true)
) if object.respond_to? :translate
super(method, text, options, &block)
end
def submit(value = nil, options = {})
value, options = nil, value if value.is_a?(Hash)
value ||= Translate.word(:search).titleize
super(value, options)
end
def attribute_select(options = nil, html_options = nil, action = nil)
options ||= {}
html_options ||= {}
action ||= Constants::SEARCH
default = options.delete(:default)
raise ArgumentError, formbuilder_error_message(
"#{action}_select") unless object.respond_to?(:context)
options[:include_blank] = true unless options.has_key?(:include_blank)
bases = [''.freeze].freeze + association_array(options[:associations])
if bases.size > 1
collection = attribute_collection_for_bases(action, bases)
object.name ||= default if can_use_default?(
default, :name, mapped_values(collection.flatten(2))
)
template_grouped_collection_select(collection, options, html_options)
else
collection = collection_for_base(action, bases.first)
object.name ||= default if can_use_default?(
default, :name, mapped_values(collection)
)
template_collection_select(:name, collection, options, html_options)
end
end
def sort_direction_select(options = {}, html_options = {})
unless object.respond_to?(:context)
raise ArgumentError,
formbuilder_error_message('sort_direction'.freeze)
end
template_collection_select(:dir, sort_array, options, html_options)
end
def sort_select(options = {}, html_options = {})
attribute_select(options, html_options, 'sort'.freeze) +
sort_direction_select(options, html_options)
end
def sort_fields(*args, &block)
search_fields(:s, args, block)
end
def sort_link(attribute, *args)
@template.sort_link @object, attribute, *args
end
def sort_url(attribute, *args)
@template.sort_url @object, attribute, *args
end
def condition_fields(*args, &block)
search_fields(:c, args, block)
end
def grouping_fields(*args, &block)
search_fields(:g, args, block)
end
def attribute_fields(*args, &block)
search_fields(:a, args, block)
end
def predicate_fields(*args, &block)
search_fields(:p, args, block)
end
def value_fields(*args, &block)
search_fields(:v, args, block)
end
def search_fields(name, args, block)
args << {} unless args.last.is_a?(Hash)
args.last[:builder] ||= options[:builder]
args.last[:parent_builder] = self
options = args.extract_options!
objects = args.shift
objects ||= @object.send(name)
objects = [objects] unless Array === objects
name = "#{options[:object_name] || object_name}[#{name}]"
objects.inject(ActiveSupport::SafeBuffer.new) do |output, child|
output << @template.fields_for("#{name}[#{options[:child_index] ||
nested_child_index(name)}]", child, options, &block)
end
end
def predicate_select(options = {}, html_options = {})
options[:compounds] = true if options[:compounds].nil?
default = options.delete(:default) || Constants::CONT
keys =
if options[:compounds]
Predicate.names
else
Predicate.names.reject { |k| k.match(/_(any|all)$/) }
end
if only = options[:only]
if only.respond_to? :call
keys = keys.select { |k| only.call(k) }
else
only = Array.wrap(only).map(&:to_s)
keys = keys.select {
|k| only.include? k.sub(/_(any|all)$/, ''.freeze)
}
end
end
collection = keys.map { |k| [k, Translate.predicate(k)] }
object.predicate ||= Predicate.named(default) if
can_use_default?(default, :predicate, keys)
template_collection_select(:p, collection, options, html_options)
end
def combinator_select(options = {}, html_options = {})
template_collection_select(
:m, combinator_choices, options, html_options)
end
private
def template_grouped_collection_select(collection, options, html_options)
@template.grouped_collection_select(
@object_name, :name, collection, :last, :first, :first, :last,
objectify_options(options), @default_options.merge(html_options)
)
end
def template_collection_select(name, collection, options, html_options)
@template.collection_select(
@object_name, name, collection, :first, :last,
objectify_options(options), @default_options.merge(html_options)
)
end
def can_use_default?(default, attribute, values)
object.respond_to?("#{attribute}=") && default &&
values.include?(default.to_s)
end
def mapped_values(values)
values.map { |v| v.is_a?(Array) ? v.first : nil }.compact
end
def sort_array
[
['asc'.freeze, object.translate('asc'.freeze)].freeze,
['desc'.freeze, object.translate('desc'.freeze)].freeze
].freeze
end
def combinator_choices
if Nodes::Condition === object
[
[Constants::OR, Translate.word(:any)],
[Constants::AND, Translate.word(:all)]
]
else
[
[Constants::AND, Translate.word(:all)],
[Constants::OR, Translate.word(:any)]
]
end
end
def association_array(obj, prefix = nil)
([prefix] + association_object(obj))
.compact
.flat_map { |v| [prefix, v].compact.join(Constants::UNDERSCORE) }
end
def association_object(obj)
case obj
when Array
obj
when Hash
association_hash(obj)
else
[obj]
end
end
def association_hash(obj)
obj.map do |key, value|
case value
when Array, Hash
association_array(value, key.to_s)
else
[key.to_s, [key, value].join(Constants::UNDERSCORE)]
end
end
end
def attribute_collection_for_bases(action, bases)
bases.map { |base| get_attribute_element(action, base) }.compact
end
def get_attribute_element(action, base)
begin
[
Translate.association(base, context: object.context),
collection_for_base(action, base)
]
rescue UntraversableAssociationError
nil
end
end
def attribute_collection_for_base(attributes, base = nil)
attributes.map do |c|
[
attr_from_base_and_column(base, c),
Translate.attribute(
attr_from_base_and_column(base, c), context: object.context
)
]
end
end
def collection_for_base(action, base)
attribute_collection_for_base(
object.context.send("#{action}able_attributes", base), base)
end
def attr_from_base_and_column(base, column)
[base, column].reject(&:blank?).join(Constants::UNDERSCORE)
end
def formbuilder_error_message(action)
"#{action.sub(Constants::SEARCH, Constants::ATTRIBUTE)
} must be called inside a search FormBuilder!"
end
end
end
end