如何使用茧形宝石使用具有不同关系的嵌套形式？
[英]How to use nested forms with different relations using the cocoon gem?
问题描述
我的困境已经存在了一个星期，我正在尝试解决这个问题，但到目前为止我还无法解决，所以我正在寻求帮助。
我有一个Model Dealership和其他嵌套的（DealershipsSetting，地址，机器，操作员，卡），其中has_one关系仅适用于DealershipsSetting，因此其他关系为has_many。 当我为嵌套表单的每个模型调用build方法时，我只能在数据库表中写一些信息，例如：
def new
@dealership = Dealership.new
@ dealership.build_dealerships_setting if @ dealership.dealerships_setting.blank?
@ dealership.addresses.build if @ dealership.addresses.blank?
...
end
def edit
@ dealership.build_dealerships_setting if @ dealership.dealerships_setting.blank?
@ dealership.addresses.build if @ dealership.addresses.blank?
...
end
我意识到：
a）我在日志中注意到的第一件事是表单被多次重定向。 这是有道理的，因为我强迫他们通过build调用进行构建（至少这是我所了解的）。 但这不是使用gem时的默认行为，我在另一个应用程序中进行了测试，只是通过遵循文档https://github.com/nathanvda/cocoon来了解如何使用gem。
b）由于调用了build方法，因此表单已打开（准备接收数据），我不知道这是否是默认行为。
c）当我呼叫“新建”或“编辑”操作时，我不能记录多条记录（类型，2个地址，3个卡或N个运算符）
d）在文档中我没有注意到对build方法的任何调用，我在搜索中发现了尝试解决我的问题的方法，例如https://share.atelie.software/rails-nested-attributes-com-has -许多-42ecf6179871
e）如果我从文档中删除调用，则按照文档中提供的示例进行操作，直到您通过link_to_add_association进行调用之前，这些字段才会显示为隐藏状态，但不会保存嵌套表单中的任何数据。
当我这样设置我的Dealerships_controller时，我无法在数据库中添加任何寄存器：
def new
@dealership = Dealership.new
end
...
def create
@dealership = Dealership.new(dealership_params)
respond_to do |format|
if @dealership.save
format.html { redirect_to users_backend_dealerships_path, notice: 'Dealership was successfully created.' }
format.json { render :show, status: :created, location: @dealership }
else
format.html { render :new }
format.json { render json: @dealership.errors, status: :unprocessable_entity }
end
end
end
....
def dealership_params
params.require(:dealership).permit(
:fantasy_name, :social_name, :cpf, :cnpj, :municipal_registration, :state_registration, :credit, :phone, :manager_email, :is_available, :credits_package_id, dealerships_setting_attributes: [:id, :credit_alert, :contract_validity, :franchise_for_rent, :due_date, :credit_value, :is_available, :_destroy],addresses_attributes: [:id, :place, :neighborhood, :cep, :state, :city, :is_available, :_destroy], machines_attributes: [:id, :name, :model, :serial_number, :mac_address, :calibration_counter, :is_available, :_destroy], operators_attributes: [:id, :name, :cpf, :card, :is_available, :_destroy ], cards_attributes: [:id, :serial, :category, :credit_package, :client, :machine, :operator, :is_available, :_destroy ])
end
这样，我可以在数据库中按模型添加一个寄存器。
发牌人_控制器
class UsersBackend :: DealershipsController <UsersBackendController
before_action: set_dealership, only: [: show,: edit,: update,: destroy]
before_action: get_credit_packages, only: [: edit,: update,: new]
def index
@dealerships = Dealership.includes(:dealerships_setting, :addresses, :machines, :operators, :cards)
end
def show
end
def add_credits
end
def new
@dealership = Dealership.new
@dealership.build_dealerships_setting if @dealership.dealerships_setting.blank?
@dealership.addresses.build if @dealership.addresses.blank?
@dealership.machines.build if @dealership.machines.blank?
@dealership.operators.build if @dealership.operators.blank?
@dealership.cards.build if @dealership.cards.blank?
end
def edit
@dealership.build_dealerships_setting if @dealership.dealerships_setting.blank?
@dealership.addresses.build if @dealership.addresses.blank?
@dealership.machines.build if @dealership.machines.blank?
@dealership.operators.build if @dealership.operators.blank?
@dealership.cards.build if @dealership.cards.blank?
end
def create
@dealership = Dealership.new(dealership_params)
respond_to do |format|
if @dealership.save
format.html { redirect_to users_backend_dealerships_path, notice: 'Dealership was successfully created.' }
format.json { render :show, status: :created, location: @dealership }
else
format.html { render :new }
format.json { render json: @dealership.errors, status: :unprocessable_entity }
end
end
end
def update
respond_to do |format|
if @dealership.update(dealership_params)
format.html { redirect_to users_backend_dealerships_path, notice: 'Dealership was successfully updated.' }
format.json { render :show, status: :ok, location: @dealership }
else
format.html { render :edit }
format.json { render json: @dealership.errors, status: :unprocessable_entity }
end
end
end
def destroy
@dealership.destroy
respond_to do |format|
format.html { redirect_to users_backend_dealerships_path, notice: 'Dealership was successfully destroyed.' }
format.json { head :no_content }
end
end
private
def set_dealership
@dealership = Dealership.find(params[:id])
end
def dealership_params
params.require(:dealership).permit(:fantasy_name, :social_name, :cpf, :cnpj, :municipal_registration, :state_registration, :credit, :phone, :manager_email, :is_available, :credits_package_id,
dealerships_setting_attributes: [:id, :credit_alert, :contract_validity, :franchise_for_rent, :due_date, :credit_value, :is_available, :_destroy],
addresses_attributes: [:id, :place, :neighborhood, :cep, :state, :city, :is_available, :_destroy],
machines_attributes: [:id, :name, :model, :serial_number, :mac_address, :calibration_counter, :is_available, :_destroy],
operators_attributes: [:id, :name, :cpf, :card, :is_available, :_destroy ],
cards_attributes: [:id, :serial, :category, :credit_package, :client, :machine, :operator, :is_available, :_destroy ]
)
end
def get_credit_packages
@credit_packages = CreditsPackage.where(media_owner: 0)
end
end
模型经销商
class Dealership < ApplicationRecord
has_many :credits_packages
has_one :dealerships_setting, dependent: :destroy, inverse_of: :dealership
has_many :addresses, dependent: :destroy, inverse_of: :dealership
has_many :machines, dependent: :destroy, inverse_of: :dealership
has_many :operators, dependent: :destroy, inverse_of: :dealership
has_many :cards, dependent: :destroy, inverse_of: :dealership
accepts_nested_attributes_for :dealerships_setting, reject_if: :all_blank, allow_destroy: true
accepts_nested_attributes_for :addresses, reject_if: :all_blank, allow_destroy: true
accepts_nested_attributes_for :machines, reject_if: :all_blank, allow_destroy: true
accepts_nested_attributes_for :operators, reject_if: :all_blank, allow_destroy: true
accepts_nested_attributes_for :cards, reject_if: :all_blank, allow_destroy: true
accepts_nested_attributes_for :users, reject_if: :all_blank, allow_destroy: true
end
模型经销商
class DealershipsSetting < ApplicationRecord
belongs_to :dealership, inverse_of: :dealerships_setting
end
型号地址
class Address < ApplicationRecord
belongs_to :dealership
end
form.html.erb（交易）
<%= form_with(model: [ :users_backend, @dealership], local: true) do |form| %>
<div class="form-group">
<strong><%= form.label :fantasy_name %></strong>
<%= form.text_field :fantasy_name, autofocus: true, class:"text-uppercase form-control", placeholder:t('place_holders.fantasy_name') %>
</div>
...
<%= form.fields_for :dealerships_setting, @dealership.dealerships_setting do |dealerships_setting| %>
<%= render partial: 'dealerships_setting_fields', locals: { f: dealerships_setting } %>
<% end %>
<div id="addresses">
<%= form.fields_for :addresses do |address| %>
<%= render partial: 'address_fields', locals: { f: address } %>
<% end %>
<%= link_to_add_association('Add address', form, :addresses) %>
</div>
....others nested forms...
_dealerships_setting_fields.html.erb
<div class="nested-fields">
<div class="form-group">
<strong><%= f.label :contract_validity %></strong>
<%= f.text_field :contract_validity, class:"form-control ", placeholder:t('place_holders.contract_validity') %>
</div> ...another fields...
_address_fields.html.erb
<div class='nested-fields'>
<div class='form-group'>
<strong><%= f.label :place %></strong>
<%= f.text_field :place, class:"text-uppercase form-control", placeholder:t('place_holders.place') %>
</div> ...another fields...
我需要什么？ A-管理经销店，它们必须具有一种配置以及一个或多个地址，机器，操作员和卡。
我将非常感谢任何可以帮助我的人。
1 个解决方案
解决方案1
0 2019-05-11 15:36:23
好的，所以我遇到了两个主要错误：
- 您的表单标签位于div中，但是您的表单内容跨越了多个div。 看起来正确，但在所有情况下都不会发布正确的信息
- 其次：就我而言，您确实有验证阻止保存，然后发生了两件事：
- 您没有在
create操作中设置@credit_packages，从而在重新呈现表单时出现错误 - 您没有显示任何验证错误（因此没有关于保存失败原因的反馈）
- 您没有在
所以我做了两件事。 在您的dealerships_controller我编辑了以下行
before_action :get_credit_packages, only: [:edit, :update, :new, :create]
（还要在创建时设置信用额度）
而您的_form.html.erb我将form_with直接移到了div row下方，并添加了一些基本的验证错误显示。 div row从未关闭。 您的完整表格：
<!-- Page Heading -->
<h1 class="h3 mb-4 text-gray-800"><%= action_message %></h1>
<div class="row">
<%= form_with(model: [ :users_backend, @dealership], local: true) do |form| %>
<p>
<%= @dealership.errors.messages.inspect %>
</p>
<div class="col-lg-6"> <!-- card Dealerships Information-->
<div class="card border-left-danger shadow mb-4">
<a href="#collapseCardDealershipInformation" class="d-block card-header py-3" data-toggle="collapse" role="button" aria-expanded="true" aria-controls="collapseCardDealershipInformation"><h6 class="m-0 font-weight-bold text-primary"><%= t('labels.dealership_information') %></h6></a>
<div class="collapse show" id="collapseCardDealershipInformation"> <!-- card Content - Collapse -->
<div class="card-body">
<div class="form-group">
<strong><%= form.label :fantasy_name %></strong>
<%= form.text_field :fantasy_name, autofocus: true, class:"text-uppercase form-control", placeholder:t('place_holders.fantasy_name') %>
</div>
<div class="form-group">
<strong><%= form.label :social_name %></strong>
<%= form.text_field :social_name, class:"text-uppercase form-control", placeholder:t('place_holders.social_name') %>
</div>
<div class="form-group row">
<div class="col-md-6">
<strong><%= form.label :phone %></strong>
<%= form.text_field :phone, class:"form-control", placeholder:t('place_holders.phone') %>
</div>
<div class="col-md-6">
<strong><%= form.label :manager_email %></strong>
<%= form.text_field :manager_email, class:"text-downcase form-control", placeholder:t('place_holders.manager_email') %>
</div>
</div>
<div class="form-group row">
<div class="col-md-6">
<strong><%= form.label :cpf %></strong>
<%= form.text_field :cpf, class:"form-control", placeholder:t('place_holders.cpf') %>
</div>
<div class="col-md-6">
<strong><%= form.label :cnpj %></strong>
<%= form.text_field :cnpj, class:"form-control", placeholder:t('place_holders.cnpj') %>
</div>
</div>
<div class="form-group row">
<div class="col-md-6">
<strong><%= form.label :municipal_registration %></strong>
<%= form.text_field :municipal_registration, class:"form-control form-control-user", placeholder:t('place_holders.municipal_registration') %>
</div>
<div class="col-md-6">
<strong><%= form.label :state_registration %></strong>
<%= form.text_field :state_registration, class:"form-control form-control-user", placeholder:t('place_holders.state_registration') %>
</div>
</div>
<div class="form-group">
<strong><%= form.label :credits_package %></strong>
<%= form.collection_select(:credits_package_id, @credit_packages, :id, :name, {:prompt => t('prompt.credits_package')}, { class:"form-control" }) %>
</div>
<div class="form-group custom-control custom-checkbox small ">
<%= form.check_box :is_available, class:"custom-control-input" %>
<%= form.label :is_available, class:"custom-control-label" %>
</div>
</div> <!-- .card-body-->
</div><!-- . card Content - Collapse -->
</div> <!-- .mb4-->
</div> <!-- .Dealerships Information (lg-6) -->
<div class="col-lg-6"> <!-- card Financial Settings -->
<div class="card border-left-danger shadow mb-4">
<a href="#collapseCardDealershipFinancialSettings" class="d-block card-header py-3" data-toggle="collapse" role="button" aria-expanded="true" aria-controls="collapseCardDealershipFinancialSettings"><h6 class="m-0 font-weight-bold text-primary"><%= t('labels.financial_settings') %></h6></a>
<div class="collapse show" id="collapseCardDealershipFinancialSettings">
<div class="card-body">
<%= form.fields_for :dealerships_setting, @dealership.dealerships_setting do |dealerships_setting| %>
<%= render partial: 'dealerships_setting_fields', locals: { f: dealerships_setting } %>
<% end %>
</div> <!--card-body -->
</div> <!--collapse card dealership Financial settings -->
</div><!--mb-4 -->
</div> <!-- .Financial Settings (lg-6) -->
<div class="col-lg-12"> <!-- card Addresses -->
<div class="card border-left-danger shadow mb-4">
<a href="#collapseCardAddressess" class="d-block card-header py-3" data-toggle="collapse" role="button" aria-expanded="true" aria-controls="collapseCardAddressess"><h6 class="m-0 font-weight-bold text-primary"><%= t('labels.addresses') %></h6></a>
<div class="collapse show" id="collapseCardAddressess">
<div class="card-body">
<div id="addresses">
<%= form.fields_for :addresses do |address| %>
<%= render partial: 'address_fields', locals: { f: address } %>
<% end %>
<%= link_to_add_association('Adicionar endereço', form, :addresses) %>
</div> <!-- addresses -->
</div> <!--card-body -->
</div> <!--collapse card dealership Addressess -->
</div> <!-- mb-4 -->
</div> <!--col-lg-12 -->
<div class="col-lg-12"> <!-- card Machines-->
<div class="card border-left-warning shadow mb-4">
<a href="#collapseCardDealershipMachines" class="d-block card-header py-3" data-toggle="collapse" role="button" aria-expanded="true" aria-controls="collapseCardDealershipMachines"><h6 class="m-0 font-weight-bold text-primary"><%= t('labels.machines') %></h6></a>
<div class="collapse show" id="collapseCardDealershipMachines">
<div class="card-body">
<div id="machines">
<%= form.fields_for :machines do |machine| %>
<%= render partial: 'machine_fields', locals: { f: machine } %>
<% end %>
<%= link_to_add_association('Adicionar equipamento', form, :machines) %>
</div> <!-- machines -->
</div> <!--card-body -->
</div> <!--collapse card machines -->
</div><!--mb-4 -->
</div> <!--col-lg-12 -->
<div class="col-lg-6"> <!-- card Operators-->
<div class="card border-left-warning shadow mb-4">
<a href="#collapseCardDealershipOperators" class="d-block card-header py-3" data-toggle="collapse" role="button" aria-expanded="true" aria-controls="collapseCardDealershipOperators"><h6 class="m-0 font-weight-bold text-primary"><%= t('labels.operators') %></h6></a>
<div class="collapse show" id="collapseCardDealershipOperators">
<div class="card-body">
<div id="operators">
<%= form.fields_for :operators do |operator| %>
<%= render partial: 'operator_fields', locals: { f: operator } %>
<% end %>
<%= link_to_add_association('Adicionar operador', form, :operators) %>
</div> <!-- operators -->
</div> <!--card-body -->
</div> <!--collapse card dealership settings information -->
</div><!--mb-4 -->
</div> <!--.Operators (lg-6) -->
<div class="col-lg-6"> <!-- Card Cards =) -->
<div class="card border-left-warning shadow mb-4">
<a href="#collapseCardDealershipCards" class="d-block card-header py-3" data-toggle="collapse" role="button" aria-expanded="true" aria-controls="collapseCardDealershipCards"><h6 class="m-0 font-weight-bold text-primary"><%= t('labels.cards') %></h6></a>
<div class="collapse show" id="collapseCardDealershipCards">
<div class="card-body">
<div id="cards">
<%= form.fields_for :cards do |c| %>
<%= render partial: 'card_fields', locals: { f: c } %>
<% end %>
<%= link_to_add_association('Adicionar cartão', form, :cards) %>
</div> <!-- cards -->
</div> <!--card-body -->
</div> <!--collapse card dealership cards -->
</div><!--mb-4 -->
</div> <!--.Cards -->
<div class="actions">
<div class="col-sm-4 mb-3 mb-sm-0 ">
<%= form.submit t('buttons.save'), class:"btn btn-success btn-user"%>
</div>
</div> <!-- actions -->
<% end %>
</div>
然后我得以保存经销权。 布局由于某些我不了解的原因而损坏，但是我将让您解决（css类无法按我预期的方式运行）。
注意：这是我更喜欢（或建议）使用haml，slim等库的原因之一，因为您的视图代码将更易于阅读/维护并且是正确的。
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