Rails 5:来自枚举的散列( collection_check_boxes )
Rails 5:来自枚举的散列( collection_check_boxes )
提问于 2019-06-10 17:45:56
如何从哈希enum创建collection_check_boxes
class User < ApplicationRecord
has_many :roles, dependent: :destroy
accepts_nested_attributes_for :roles, allow_destroy: true
end
class Role < ApplicationRecord
belongs_to :user
enum permission: {
read_contact: 0,
write_contact: 1,
read_message: 2,
write_message: 3
}
end我尝试了很多方法：
= form_for(@user) do |f|
= f.collection_check_boxes :permissions, Role.permissions, :last, :first
= f.submit class: "button"我有undefined method permissions for #<User:0x00007...>
如果我尝试这样做：
= form_for(@user) do |f|
= f.collection_check_boxes :roles, Role.permissions, :last, :first
= f.submit class: "button"用户控制器：
def update
@user = User.new(user_params)
if @user.save
...
end
def user_params
params.require(:user).permit(:roles)
end我有Unpermitted parameter: :roles
尽管考虑了params：
Parameters: {"utf8"=>"✓", "authenticity_token"=>"...", "user"=>{"roles"=>["", "1", "2"]}, "commit"=>"Update", "id"=>"3"}还有这是勾选创建，如何取消勾选才能删除？
更新：尝试@Steve说我应该使用嵌套表单
= form_for(@user) do |f|
= f.fields_for :roles do |ff|
= ff.collection_check_boxes :permission, Role.permissions, :first, :first
= f.submit class: "button"我从数据库中得到了一个正确的检查权限！耶！！
然而，在发送表单时，这是params：
Parameters: {"utf8"=>"✓", "authenticity_token"=>"...", "user"=>{"roles_attributes"=>{"0"=>{"permission"=>["", "read_message", "write_message"], "id"=>"18"}}}, "commit"=>"Update", "id"=>"3"}我得到了Unpermitted parameter: :permission，尽管我在控制器中允许它：
def user_params
params.require(:user).permit(roles_attributes: %i[id permission _destroy])
end我认为参数应该是这样的：
params = { user: {
roles_attributes: [
{ permission: 'read_message' },
{ permission: 'write_message' },
...
]
}}相反，我现在在params中得到的是：
params = { user: {
roles_attributes: [
{ permission: ['', 'read_message', 'write_message' }
...
]
}}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/56523970
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