我拼命尝试将一组默认值合并到我的嵌套参数中。不幸的是,deep_merge
在 Rails 5 中不再有效,因为它不再继承自 Hash
。
所以这不有效:
class CompaniesController < ApplicationController
def create
@company = current_account.companies.build(company_params)
if @company.save
flash[:success] = "Company created."
redirect_to companies_path
else
render :new
end
end
private
def company_params
params.require(:company).permit(
:name,
:email,
:people_attributes => [
:first_name,
:last_name
]
).deep_merge(
:creator_id => current_user.id,
:people_attributes => [
:creator_id => current_user.id
]
)
end
end
它给我这个错误:
undefined method `deep_merge' for ActionController::Parameters:0x007fa24c39cfb0
那怎么办呢?
最佳答案
由于在 Rails 5 ActionController::Parameters
中似乎没有类似的 deep_merge
实现,请查看 docs , 然后你可以简单地做 .to_h
把它先转换成 ActiveSupport::HashWithIndifferentAccess
(它是 Hash
的子类):
to_h() Returns a safe ActiveSupport::HashWithIndifferentAccess representation of the parameters with all unpermitted keys removed.
def company_params
params.require(:company).permit(
:name,
:email,
:people_attributes => [
:first_name,
:last_name
]
).to_h.deep_merge(
:creator_id => current_user.id,
:people_attributes => [
:creator_id => current_user.id
]
)
end
关于ruby-on-rails - 如何将默认值合并到 Rails 5 中的嵌套参数中?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51954683/