Question

FriendlyID似乎没有找到带有相应slug的数据库条目。

以下是控制台显示的内容：

开始GET＆＃34; /预算/饮料＆＃34;对于127.0.0.1在2015-07-01 12:42:53   +0200由BudgetsController处理#show as HTML参数：{＆＃34; id＆＃34; =＆gt;＆＃34; drink＆＃34;}预算负载（0.2ms）SELECT＆＃34;预算＆＃34;。* FROM   ＆＃34;预算＆＃34;在哪里＆＃34;预算＆＃34;。＆＃34; slug＆＃34; =＆＃39;饮料＆＃39; ORDER BY＆＃34;预算＆＃34;。＆＃34; id＆＃34;   ASC LIMIT 1用户负载（0.2ms）SELECT＆＃34;用户＆＃34;。* FROM＆＃34;用户＆＃34;哪里   ＃＆34;用户＆＃34;＆＃34; ID＆＃34; = 1 ORDER BY＆＃34;用户＆＃34;。＆＃34; id＆＃34; ASC LIMIT 1 MoneyTransaction   加载（0.5ms）SELECT＆＃34; money_transactions＆＃34;。* FROM＆＃34; money_transactions＆＃34;   在哪里＆＃34; money_transactions＆＃34;。＆＃34; budget_id＆＃34; =？ [[＆＃34; budget_id＆＃34;，17]]
  预算负荷（0.1ms）SELECT＆＃34;预算＆＃34;。* FROM＆＃34;预算＆＃34;哪里   ＆＃34;预算＆＃34;＆＃34; USER_ID＆＃34; =？ [[＆＃34; user_id＆＃34;，1]]已呈现   预算/ _budget_overview.html.erb(5.5ms）已呈现   预算/ _form.html.erb(7.0ms）在内部呈现预算/ show.html.erb   布局/应用程序（26.3ms）在224ms完成200 OK（浏览次数：213.5ms   | ActiveRecord：1.0ms）

开始POST＆＃34; / money_transactions＆＃34;在2015-07-01获得127.0.0.1   12:43:06 +0200 MoneyTransactionsController处理#create as   HTML参数：{＆＃34; utf8＆＃34; =＆gt;＆＃34;✓＆＃34;，   ＆＃34; authenticity_token＆＃34; = GT;＆＃34; EPcX4adigoTRY6A1doxWpdMM9eXy / KyqY84zKp855bE =＆＃34 ;,   ＆＃34; money_transaction＆＃34; =＆gt; {＆＃34; budget_id＆＃34; =＆gt;＆＃34;饮料＆＃34;，＆＃34;金额＆＃34; =＆gt;＆＃34; 24＆＃34 ;，   ＆＃34;标题＆＃34; =＆gt;＆＃34;焦炭＆＃34;}，＆＃34;按钮＆＃34; =＆gt;＆＃34;＆＃34;}用户负载（0.2ms）SELECT＆＃ 34;用户＆＃34; *。   来自＆＃34;用户＆＃34;用户＆＃34;。＆＃34; id＆＃34; = 1 ORDER BY＆＃34;用户＆＃34;。＆＃34; id＆＃34; ASC限制   1预算负荷（0.2ms）SELECT＆＃34;预算＆＃34;。* FROM＆＃34;预算＆＃34;哪里   ＆＃34;预算＆＃34;＆＃34;蛞蝓＆＃34; =＆＃39;饮料＆＃39; ORDER BY＆＃34;预算＆＃34;。＆＃34; id＆＃34; ASC限制1
  （0.1ms）开始交易预算负荷（0.1ms）SELECT＆＃34;预算＆＃34;。*   来自＆＃34;预算＆＃34;在哪里＆＃34;预算＆＃34;。＆＃34; id＆＃34; =？限制1 [[＆＃34; id＆＃34;，0]]
  （0.1ms）回滚事务（0.0ms）开始事务（0.1ms）   回滚事务重定向到   http://localhost:3000/budgets/drinks完成302发现在14ms   （ActiveRecord：0.7ms）

这表明当我访问页面时，slug存在并且与ID正确相关。然而，在寻找了一个条目＆＃34;饮料＆＃34;它只返回ID为0.

预算负荷（0.2ms）SELECT＆＃34;预算＆＃34;。* FROM＆＃34;预算＆＃34;哪里   ＆＃34;预算＆＃34;＆＃34;蛞蝓＆＃34; =＆＃39;饮料＆＃39; ORDER BY＆＃34;预算＆＃34;。＆＃34; id＆＃34; ASC限制1
  （0.1ms）开始交易预算负荷（0.1ms）SELECT＆＃34;预算＆＃34;。*   来自＆＃34;预算＆＃34;在哪里＆＃34;预算＆＃34;。＆＃34; id＆＃34; =？限制1 [[＆＃34; id＆＃34;，0]]

money_transaction_controller.rb

def create
    @budget = Budget.friendly.find(params[:money_transaction][:budget_id])
    @money_transaction = MoneyTransaction.new(money_transaction_params)
    @money_transaction.user = current_user
    @money_transaction.date = Time.now.to_date
    @money_transaction.is_positive = 0

    @money_transaction.save

    respond_to do |format|
      if @money_transaction.save
        format.html { redirect_to @budget, notice: 'Transaction added.'}
        format.json { render :show, status: :created, location: @budget }
      else
        format.html { redirect_to @budget, alert: 'Transaction was not valid.'}
        format.json { render json: @money_transaction.errors, status: :unprocessable_entity }
      end
    end
  end

budget.rb

class Budget < ActiveRecord::Base
  belongs_to :user
  has_many :money_transactions

  validates :amount, presence: true
  validates :title, presence: true
  validates :user, presence: true
  validates :amount, numericality: true

  extend FriendlyId
  friendly_id :title, use: :slugged

  def should_generate_new_friendly_id?
    new_record?
  end
end

预算/ show.html.erb

<%= form_for(@budget.money_transactions.build, :html => { :id => 'money_transaction-form' }) do |f| %>
      <%= f.hidden_field :budget_id, :value => params[:id] %>

      <%= f.number_field :amount, id: "transaction-input", placeholder: "#{@budget.title} ", step: 0.01, :autocomplete => :off %>

      <%= f.text_field :title, class: "", placeholder: "purpose", :autocomplete => :off %>

      <%= f.button(type: 'submit', class: "postfix") do %>
          <i class="fa fa-arrow-right"></i>
      <% end %>

<% end %>

的routes.rb

  get '/pages', to: 'pages#index'

  devise_for :users
  resources :users

  resources :budget
  resources :money_transactions


  root :to => 'budgets#index'

如果您需要任何其他文件，请告诉我。我之前使用过friendlyID，从来没有遇到过问题。我希望你能帮助我。

修改所以我找到了一个解决方法。但我觉得应该有一个更简单的解决方案。我将隐藏的字段更改为：

<%= f.hidden_field :budget_id, :value => Budget.where(:slug => params[:id]).last.id %>

现在它有效。但如果你有更好的解决方案，请告诉我。

Answer 1

不要将FriendlyID用于表单参数 - 只需使用直接ID即可。这使rails可以自动添加关联，从而产生更有效的SQL查询。

<%= form_for(@budget.money_transactions.build, :html => { :id => 'money_transaction-form' }) do |f| %>
  <%= f.hidden_field :budget_id, value: @budget.id %>
  <%= f.number_field :amount, id: "transaction-input", placeholder: "#{@budget.title} ", step: 0.01, :autocomplete => :off %>
  <%= f.text_field :title, class: "", placeholder: "purpose", :autocomplete => :off %>
  <%= f.button(type: 'submit', class: "postfix") do %>
    <i class="fa fa-arrow-right"></i>
  <% end %>
<% end %>

这样你可以清理你的控制器：

def create
  @money_transaction = MoneyTransaction.new(money_transaction_params) do |mt|
    mt.user = current_user
    mt.date = Time.now.to_date
    mt.is_positive = 0
  end
  respond_to do |format|
    if @money_transaction.save
      format.html { redirect_to @budget, notice: 'Transaction added.'}
      format.json { render :show, status: :created, location: @budget }
    else
      format.html { redirect_to @budget, alert: 'Transaction was not valid.'}
      format.json { render json: @money_transaction.errors, status: :unprocessable_entity }
    end
  end
end

FriendlyID找不到匹配slug

1 个答案: