lib/active_scaffold/helpers/controller_helpers.rb
module ActiveScaffold
module Helpers
module ControllerHelpers
def self.included(controller)
return unless controller.respond_to? :helper_method
controller.class_eval do
helper_method :params_for, :conditions_from_params, :render_parent?,
:main_path_to_return, :render_parent_options,
:render_parent_action, :nested_singular_association?,
:main_form_controller, :build_associated,
:generate_temporary_id, :generated_id,
:active_scaffold_config_for
end
end
include ActiveScaffold::Helpers::IdHelpers
def active_scaffold_config_for(klass)
config = self.class.active_scaffold_config_for(klass)
if ActiveScaffold.threadsafe
config.user || config.new_user_settings({}, {})
else
config
end
end
def generate_temporary_id(record = nil, generated_id = nil)
unless generated_id
temp_id = (Time.now.to_f * 1_000_000).to_i.to_s
temp_id.succ! while @temporary_ids&.dig(record.class.name)&.include?(temp_id)
generated_id = temp_id
end
cache_generated_id record, generated_id
generated_id
end
def cache_generated_id(record, generated_id)
# cache all generated ids for the same class, so generate_temporary_id can check and ensure ids are unique
((@temporary_ids ||= {})[record.class.name] ||= []) << generated_id if record && generated_id
end
def generated_id(record)
@temporary_ids[record.class.name]&.last if record && @temporary_ids
end
# These params should not propagate:
# :adapter and :position are one-use rendering arguments.
# :sort, :sort_direction, and :page are arguments that stored in the session, if store_user_settings is enabled
# and wow. no we don't want to propagate :record.
# :commit is a special rails variable for form buttons
# :_method is a special rails variable to simulate put, patch and delete actions.
# :dont_close is submit button which avoids closing form.
# :auto_pagination is used when all records are loaded automatically with multiple request.
# :iframe is used to simulate ajax forms loading form in iframe.
# :associated_id used in add_existing
# :authenticity_token is sent on some ajax requests
# :_added is sent on checkbox-list with update_columns
# :_removed is sent on checkbox-list with update_columns
# :_popstate sent when loading previous page from history, after using history.pushState
# :_ jQuery param added for GET requests with cache disabled
BLACKLIST_PARAMS = %i[adapter position sort sort_direction page record commit _method dont_close auto_pagination
iframe associated_id authenticity_token _added _removed _popstate _].freeze
def params_for(options = {})
unless @params_for
@params_for = {}
params.except(*BLACKLIST_PARAMS).each do |key, value|
@params_for[key.to_sym] = copy_param(value)
end
@params_for[:controller] = '/' + @params_for[:controller].to_s unless @params_for[:controller].to_s.first(1) == '/' # for namespaced controllers
@params_for.delete(:id) if @params_for[:id].nil?
end
url_options = @params_for.merge(options)
if !active_scaffold_config.store_user_settings && controller_requested(url_options[:controller]) == controller_path
url_options[:search] ||= copy_param search_params if respond_to?(:search_params, true) && search_params.present?
url_options[:page] ||= params[:page]
if active_scaffold_config.actions.include?(:list) && active_scaffold_config.list.user.user_sorting?
column, direction = active_scaffold_config.list.user.sorting.first
url_options[:sort] ||= column.name
url_options[:sort_direction] ||= direction
end
end
url_options
end
def controller_requested(controller)
if controller.to_s.first(1) == '/'
controller[1..-1]
else
path = controller_path.split('/')[0..-2]
path << controller
path.join('/')
end
end
def copy_param(value)
if controller_params? value
params_hash value
else
value.duplicable? ? value.clone : value
end
end
# Parameters to generate url to the main page (override if the ActiveScaffold is used as a component on another controllers page)
def main_path_to_return
if params[:return_to]
params[:return_to]
else
exclude_parameters = %i[utf8 associated_id]
parameters = {}
if params[:parent_scaffold] && nested_singular_association?
parameters[:controller] = params[:parent_scaffold]
exclude_parameters.concat [nested.param_name, :association, :parent_scaffold]
# parameters[:eid] = params[:parent_scaffold] # not neeeded anymore?
end
parameters.merge! nested.to_params if nested?
if params[:parent_sti]
parameters[:controller] = params[:parent_sti]
# parameters[:eid] = nil # not neeeded anymore?
end
parameters[:action] = 'index'
parameters[:id] = nil
params_for(parameters).except(*exclude_parameters)
end
end
def nested_singular_association?
nested? && (nested.belongs_to? || nested.has_one?)
end
def main_form_controller
parent_controller_name.constantize if params[:parent_controller]
end
def render_parent?
nested_singular_association? || params[:parent_sti]
end
def render_parent_options
if nested_singular_association?
{:controller => nested.parent_scaffold.controller_path, :action => :index, :id => nested.parent_id}
elsif parent_sti_controller
options = params_for(:controller => parent_sti_controller.controller_path, :action => render_parent_action, :parent_sti => nil)
options.merge!(:action => :index, :id => @record.to_param) if render_parent_action == :row
options
end
end
def render_parent_action
if @parent_action.nil?
@parent_action = :row
if parent_sti_controller
parent_sti_config = parent_sti_controller.active_scaffold_config
@parent_action = :index if action_name == 'create' && parent_sti_config.actions.include?(:create) && parent_sti_config.create.refresh_list == true
@parent_action = :index if action_name == 'update' && parent_sti_config.actions.include?(:update) && parent_sti_config.update.refresh_list == true
@parent_action = :index if action_name == 'destroy' && parent_sti_config.actions.include?(:delete) && parent_sti_config.delete.refresh_list == true
end
end
@parent_action
end
# build an associated record for association
def build_associated(association, parent_record)
if association.through? && association.through_reflection.collection?
# build full chain, only check create_associated on initial parent_record
parent_record = build_associated(association.class.new(association.through_reflection), parent_record)
source_assoc = association.class.new(association.source_reflection)
build_associated(source_assoc, parent_record).tap do |record|
save_record_to_association(record, source_assoc.reverse_association, parent_record) # set inverse
end
elsif association.through? # through belongs_to/has_one
parent_record = parent_record.send(association.through_reflection.name)
source_assoc = association.class.new(association.source_reflection)
build_associated(source_assoc, parent_record)
elsif association.collection?
parent_record.send(association.name).build
elsif association.belongs_to? || parent_record.new_record? || parent_record.send(association.name).nil?
# avoid use build_association in has_one when record is saved and had associated record
# because associated record would be changed in DB
parent_record.send("build_#{association.name}")
else
association.klass.new.tap do |record|
save_record_to_association(record, association.reverse_association, parent_record) # set inverse
end
end
end
def save_record_to_association(record, association, value, reverse = nil)
return unless association
if association.collection?
record.association(association.name).target << value
elsif reverse&.belongs_to?
value.send("#{reverse.name}=", record)
else
record.send("#{association.name}=", value)
end
end
end
end
end