[英]With Nested Resources in routes.rb with custom to_param, how can Strong Parameters allow created/update to permit?
I can't find something that'll lead in the right direction. 我找不到能指引正确方向的东西。 Everyone else's similar issues with nested resources seems to resolve around
accepts_nested_attributes_for
… which I'm not trying to do. 嵌套资源中的每个其他
accepts_nested_attributes_for
似的问题似乎都可以在accepts_nested_attributes_for
…附近解决,而我并不想这样做。 I'm not trying to save children from the parent, I'm trying to save directly from the child. 我不是要从父母那里拯救孩子,而是要直接从孩子那里拯救孩子。
In my routes.rb, I have nested my resource 在我的routes.rb中,我嵌套了资源
resources :parents, param: :parent do
resources :children, param: :child
end
parent
and child
tables both have their own id
column, but also have unique index on columns parent
and child
respectively, which I was to be used in the URL instead of the id
. parent
表和child
表都有自己的id
列,但分别在parent
和child
列上具有唯一索引,我将在URL中使用它而不是id
。
http://example.com/parents/parent/children/child
http://example.com/parents/parent/children/child
This is working fine browsing around going to the show
, edit
and index
actions of each controller. 这样可以很好地浏览每个控制器的
show
, edit
和index
动作。
The problem is there are exceptions saving data. 问题是存在保存数据的异常。
I'm hoping the root-cause of the issue doesn't come down to a field in the child
table is also called child
as that's what I've used to override to_param
in the model and need to keep it that way. 我希望问题的根本原因不会归结为
child
表中的字段也称为child
因为这就是我在模型中重写to_param
所需要的,并且需要保持这种方式。
Navigating to the edit screen: http://example.com/parents/harry/children/sally/edit and pushing submit on the form, returns this NoMethodError exception: 导航到编辑屏幕: http : //example.com/parents/harry/children/sally/edit并在表单上推送Submit ,返回此NoMethodError异常:
NoMethodError at /parents/harry/children/sally
在/ parents / harry / children / sally处出现NoMethodError
undefined method `permit' for "sally":String未定义的方法“ permit”,用于“ sally”:字符串
I'm sure the problem is something to do with how my Strong Parameters line is in children_controller.rb
. 我确定问题是与
children_controller.rb
强参数”行有关。 Can I add to require
a hash of :parent
and :child
maybe? 我可以添加
require
:parent
和:child
的哈希吗?
def children_params
params.require(:child).permit(:child, :date_of_birth, :nickname)
end
Update 1 (Added params): Here are the request parameters: 更新1(添加的参数):这是请求参数:
{
"utf8"=>"✓",
"_method"=>"patch",
"authenticity_token"=>"fAkBvy1pboi8TvwYh8sPDJ6n2wynbHexm/MidHruYos7AqwlKO/09kvBGyWAwbe+sy7+PFAIqKwPouIaE34usg==",
"child"=>"sally",
"commit"=>"Update Child",
"controller"=>"children",
"action"=>"update",
"parent_parent"=>"harry"
}
Other instance variable in-scope at time of error: 发生错误时其他实例变量作用域内:
@parent @父母
<Parent id: 1, parent: "harry", description: "", user_id: 1, created_at: "2015-06-27 12:00:15", updated_at: "2015-06-27 12:00:15">
@child @儿童
<Child id: 1, child: "sally", date_of_birth: nil, parent_id: 1, nickname: nil, created_at: "2015-06-27 12:00:15", updated_at: "2015-06-27 12:00:15">
From the params , you need to change the children_params
like below 在params中 ,您需要像下面这样更改
children_params
def children_params
params.permit(:child, :date_of_birth, :nickname)
end
Turns out, the problem did seem to be because the a model attribute is named the same at the model, which is what the params hash is also called (where the real problem seemed to lie). 事实证明,问题似乎确实是因为模型属性在模型上被命名为相同的属性,这也称为params哈希(真正的问题似乎在这里)。
All I needed to do was rename the params hash. 我要做的就是重命名params哈希。
In children_controller.rb
, I had to change: 在
children_controller.rb
,我必须更改:
def children_params
params.require(:child).permit(:child, :date_of_birth, :nickname)
end
to… 至…
def children_params
params.require(:anything_else).permit(:child, :date_of_birth, :nickname)
end
and then also change the form_for
my form in the new/edit views from: 然后从以下位置在new / edit视图中更改
form_for
我的表单:
<%= simple_form_for([@parent, @child]) do |f| %>
to… 至…
<%= simple_form_for([@parent, @child], as: :child_params) do |f| %>
Now, all works well across the board, in both tests and when a user uses the site via the UI as normal. 现在,无论是在测试中还是在用户正常通过UI使用网站时,所有工具都可以正常运行。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.