[英]Unknown parameter in Rails 5.1 strong parameters issue
所以我的reconciliation
模型如下所示:
class Reconciliation < ApplicationRecord
belongs_to :location
belongs_to :company
has_and_belongs_to_many :inventory_items
accepts_nested_attributes_for :inventory_items, allow_destroy: true
end
我的InventoryItem
模型如下所示:
class InventoryItem < ApplicationRecord
belongs_to :product
belongs_to :location, inverse_of: :inventory_items
has_and_belongs_to_many :reconciliations
end
在我的ReconciliationsController
,这就是我的reconciliation_params
样子:
def new
@location = Location.find(params[:location_id])
@reconciliation = @location.reconciliations.new
@inventory_items = @location.inventory_items
@start_index = 0
@next_index = @start_index + 1
end
def reconciliation_params
params.require(:reconciliation).permit(:inventory_item_id, :location_id, :display_id, :inventory_items,
inventory_items_attributes: [:id, :quantity_left, :quantity_delivered, :_destroy]
)
end
这是我的routes.rb
的相关部分:
resources :locations, shallow: true do
resources :inventory_items
resources :reconciliations
end
这是我的views/reconciliations/_form.html.erb
:
<%= simple_form_for @reconciliation, url: :location_reconciliations do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<%= f.input :location_id, as: :hidden %>
<%= f.simple_fields_for :inventory_item do |inventory| %>
<%= inventory.input :quantity_left %>
<%= inventory.input :quantity_delivered %>
<% end %>
</div>
<div class="form-actions">
<%= f.button :submit, "Update", class: "btn btn-primary" %>
</div>
<% end %>
这是我的app/views/reconciliations/new.html.erb
:
<% if params[:next].nil? %>
<%= render 'form', reconciliation: @reconciliation, inventory_item: @inventory_items[@start_index] %>
<% else %>
<%= render 'form', reconciliation: @reconciliation, inventory_item: @inventory_items[@next_index] %>
<% end %>
当我尝试创建reconciliation
对象时,这是我的日志:
Started POST "/locations/2/reconciliations" for 127.0.0.1 at 2018-03-24 23:16:33 -0500
Processing by ReconciliationsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"JZvhwloo0+XM9bmptxXGfnDw==", "reconciliation"=>{"location_id"=>"2", "inventory_item"=>{"quantity_left"=>"1", "quantity_delivered"=>"170"}}, "commit"=>"Update", "location_id"=>"2"}
Unpermitted parameter: :inventory_item
Location Load (0.9ms) SELECT "locations".* FROM "locations" WHERE "locations"."id" = $1 LIMIT $2 [["id", 2], ["LIMIT", 1]]
(0.6ms) BEGIN
(0.7ms) ROLLBACK
Rendering reconciliations/new.html.erb within layouts/application
InventoryItem Load (1.0ms) SELECT "inventory_items".* FROM "inventory_items" WHERE "inventory_items"."location_id" = $1 [["location_id", 2]]
Product Load (1.0ms) SELECT "products".* FROM "products" WHERE "products"."id" = $1 LIMIT $2 [["id", 2], ["LIMIT", 1]]
Rendered reconciliations/_form.html.erb (45.9ms)
Rendered reconciliations/new.html.erb within layouts/application (66.8ms)
Rendered shared/_navbar.html.erb (1.3ms)
Completed 200 OK in 202ms (Views: 115.1ms | ActiveRecord: 29.1ms)
我试过简单地添加:inventory_item
到我的params.require(:reconciliation).permit(..)
,但这不起作用。
我错过了什么?
编辑1
当我在我的表单上检查HTML输入时,在simple_fields_for
,HTML看起来很好:
<input class="string required" type="text" name="reconciliation[inventory_item][quantity_left]" id="reconciliation_inventory_item_quantity_left">
编辑2
当我将simple_fields_for
调用更改为复数时,即:inventory_items
,而不是:inventory_item
如下所示:
表格的整个部分完全消失了。
这就是HTML的样子:
<div class="form-inputs">
<div class="input hidden reconciliation_location_id"><input class="hidden" type="hidden" value="2" name="reconciliation[location_id]" id="reconciliation_location_id"></div>
</div>
这就是当simple_field_for :inventory_item
是单数时HTML的外观:
<div class="form-inputs">
<div class="input hidden reconciliation_location_id"><input class="hidden" type="hidden" value="2" name="reconciliation[location_id]" id="reconciliation_location_id"></div>
<div class="input string required reconciliation_inventory_item_quantity_left"><label class="string required" for="reconciliation_inventory_item_quantity_left"><abbr title="required">*</abbr> Quantity left</label><input class="string required" type="text" name="reconciliation[inventory_item][quantity_left]" id="reconciliation_inventory_item_quantity_left"></div>
<div class="input string required reconciliation_inventory_item_quantity_delivered"><label class="string required" for="reconciliation_inventory_item_quantity_delivered"><abbr title="required">*</abbr> Quantity delivered</label><input class="string required" type="text" name="reconciliation[inventory_item][quantity_delivered]" id="reconciliation_inventory_item_quantity_delivered"></div>
</div>
我试过简单地添加:inventory_item到我的params.require(:reconciliation).permit(..),但这不起作用。
如果你想要permit inventory_item,你必须指定它的结构,因为它不是一个简单的字段,而是一个哈希:
def reconciliation_params
params.require(:reconciliation).permit(:location_id, :display_id, inventory_item: [:id, :quantity_left, :quantity_delivered] )
end
通过查看您的日志,您没有传递inventory_item_id,这可能是更新此特定项目所需的:
Parameters: {"utf8"=>"✓", "authenticity_token"=>"JZvhwloo0+XM9bmptxXGfnDw==",
"reconciliation"=>{"location_id"=>"2", "inventory_item"=>
{"quantity_left"=>"1", "quantity_delivered"=>"170"}},
"commit"=>"Update", "location_id"=>"2"}
您可以将其添加为嵌套表单中的隐藏字段。
关联形式应为复数f.simple_fields_for :inventory_items
。 您应该在新控制器的操作中初始化新的inventory_item对象
def new
@reconciliation = Reconciliation.new
# you can create as many new items as you want
@reconciliation.inventory_items.build
end
如果你想动态地向表单添加项目我建议你使用https://github.com/nathanvda/cocoon
但是看起来您想要将现有的inventory_item添加到新的对帐中,最好has_many through
关联使用has_many through
http://guides.rubyonrails.org/association_basics.html#choosing-between-has-many-through-and-has-and -belongs一对多
更容易添加具有必要字段和关联的连接模型对象。
另一个建议:如果你在这个局部使用实例变量,不要将局部变量发送到局部变量
# render partial
render 'form', reconciliation: @reconciliation
# partial with form for local variable
simple_form_for reconciliation
并且我认为你的表单部分不适用于编辑操作,因为硬编码的url,你可以在一个变量中传递url:
# new html
render 'form', reconciliation: @reconciliation, url_var: location_reconciliations(@location)
# edit
render 'form', reconciliation: @reconciliation, url_var: reconciliations(@reconciliation)
# form
simple_form_for reconciliation, url: url_var
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