在 rails 的编辑页面上更新多个表单的操作

Question

我有一个页面，用户可以在其中上传工作。在编辑页面上，我有一个循环遍历所有现有作业并为每个作业打印一个表单。问题是，我不知道如何告诉控制器中的更新操作要更新哪个作业。这是编辑页面：

<% @currentjobs.each do |thejob| %>
  <%= simple_form_for(thejob) do |f| %>
      <%= f.error_notification %>

      <%= f.input :firm, input_html: { class: 'field' }, label: "Firm" %> <br>
      <%= f.input :position, input_html: { class: 'field' }, label: "Position" %> <br>
      <%= f.input :category, input_html: { class: 'field' }, label: "Category"%>
      <%= f.input :begin, input_html: { class: 'field' }, label: "Beginning", collection: 1960..2013 %><br>
      <%= f.input :end, input_html: { class: 'field' }, label: "End", collection: 1960..2013 %>
      <%= f.input :description, input_html: { class: 'field' }, label: "Description"%>

         <div class="form-actions">
           <%= f.submit "Save" %>
         </div>
  <% end %>
<% end %>

这里是更新操作：

def update
        thejob = current_user.profile.jobs.where(:id => params[:id])
        thejob.update_attributes(job_params)
        flash[:success] = "You have succesfully updated your info"
        redirect_to profile_path(current_user.profile_name)
end 

我知道这与我调用表单的更新操作有关。我想我叫错了。

更新：以下是此视图生成的表单（请记住没有样式）：

这是我的工作路线代码：

  resources :jobs

这里是rails生成的html：

   <h1>edit page for jobs </h1>
  <form accept-charset="UTF-8" action="/jobs/9" class="simple_form edit_job" id="edit_job_9" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="_method" type="hidden" value="patch" /><input name="authenticity_token" type="hidden" value="woHDLDSOUhEA6AZU1TDVbOVW1el6lUVL3evDF/svInc=" /></div>


      <div class="input string required job_firm"><label class="string required" for="job_firm"><abbr title="required">*</abbr> Firm</label><input aria-required="true" class="string required fsield" id="job_firm" maxlength="80" name="job[firm]" required="required" size="80" type="text" value="alan iverson falkjf kjfh fsdlkjh " /></div> <br>
      <div class="input string required job_position"><label class="string required" for="job_position"><abbr title="required">*</abbr> Position</label><input aria-required="true" class="string required fsield" id="job_position" maxlength="80" name="job[position]" required="required" size="80" type="text" value="position 3" /></div> <br>
      <div class="input string optional job_category"><label class="string optional" for="job_category">Category</label><input class="string optional fsield" id="job_category" maxlength="255" name="job[category]" size="255" type="text" value="" /></div>
      <div class="input select required job_begin"><label class="select required" for="job_begin"><abbr title="required">*</abbr> Beginning</label><select aria-required="true" class="select required fsield" id="job_begin" name="job[begin]" required="required"><option value=""></option>
      <option value="1960">1960</option>
      <option value="1961">1961</option>
      .
      .
      .
      <div class="input select required job_end"><label class="select required" for="job_end"><abbr title="required">*</abbr> End</label><select aria-required="true" class="select required fsield" id="job_end" name="job[end]" required="required"><option value=""></option>
      <option selected="selected" value="1960">1960</option>
      <option value="1961">1961</option>
      .
      .
      .
      <div class="input text required job_description"><label class="text required" for="job_description"><abbr title="required">*</abbr> Description</label><textarea aria-required="true" class="text required fsield" id="job_description" maxlength="500" name="job[description]" required="required">
      </textarea></div>

  <div class="form-actions">
       <input name="commit" type="submit" value="Save" />
  </div><br><br>
</form>


<form accept-charset="UTF-8" action="/jobs/7" class="simple_form edit_job" id="edit_job_7" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="&#x2713;" /><input name="_method" type="hidden" value="patch" /><input name="authenticity_token" type="hidden" value="woHDLDSOUhEA6AZU1TDVbOVW1el6lUVL3evDF/svInc=" /></div>
      <div class="input string required job_firm"><label class="string required" for="job_firm"><abbr title="required">*</abbr> Firm</label><input aria-required="true" class="string required fsield" id="job_firm" maxlength="80" name="job[firm]" required="required" size="80" type="text" value="asf asd fasf asd fas as fsaf sd" /></div> <br>
      <div class="input string required job_position"><label class="string required" for="job_position"><abbr title="required">*</abbr> Position</label><input aria-required="true" class="string required fsield" id="job_position" maxlength="80" name="job[position]" required="required" size="80" type="text" value="position 2" /></div> <br>
      <div class="input string optional job_category"><label class="string optional" for="job_category">Category</label><input class="string optional fsield" id="job_category" maxlength="255" name="job[category]" size="255" type="text" value="fafdsfds" /></div>
      <div class="input select required job_begin"><label class="select required" for="job_begin"><abbr title="required">*</abbr> Beginning</label><select aria-required="true" class="select required fsield" id="job_begin" name="job[begin]" required="required"><option value=""></option>
      .
      .
      .

      <div class="input text required job_description"><label class="text required" for="job_description"><abbr title="required">*</abbr> Description</label><textarea aria-required="true" class="text required fsield" id="job_description" maxlength="500" name="job[description]" required="required">
      </textarea></div>

         <div class="form-actions">
           <input name="commit" type="submit" value="Save" />
         </div><br><br>
</form>
.
.
.

Answer 1

好的，为了清楚起见，请查看 simple_form 生成的代码。它将生成多个带有 action 属性的表单，其中该属性的值类似于“domain.com/jobs/job_id”。当您提交表单时，它将从 action 属性对 URL 发出 PUT 或 PATCH 请求，这就是 Rails 知道要更新哪个作业的方式 - 因为您在 URL 中告诉它。

这对您不起作用的原因是您试图在 Relation 对象上调用方法“update_attributes”，而不是在工作中。试试这个：

thejob = current_user.profile.jobs.where(:id => params[:id]).first

甚至更好：

thejob = current_user.profile.jobs.find(params[:id)

编辑示例：

jobs_controller.rb：（我正在使用索引操作来呈现表单，但您可以使用任何您想要的操作，只是不要使用编辑 - 它应该用于编辑单个资源。）

class JobsController < ApplicationController
  def index
    @jobs = Job.all
  end

  def update
    @job = Job.find(params[:id])
    if @job.update_attributes(job_params)
      redirect_to jobs_path
    else
      render :index
    end
  end

  private

    def job_params
      params.require(:job).permit(:name)
    end
end

routes.rb:

# if you will use index action to render forms
resources :jobs


# if you want to use some custom action to render forms
# in this case add multiedit action to the jobs_controller
# and create a view for it
resources :jobs do
  get 'multiedit'
end

并查看（在我的情况下为 index.html.erb）：

<% @jobs.each do |job| %>
  <%= simple_form_for(job) do |f| %>
    <%= f.input :name %>  
    <%= f.button :submit %>
  <% end %>
<% end %>

现在，视图将呈现如下内容：

<form accept-charset="UTF-8" action="/jobs/1" class="simple_form edit_job" id="edit_job_1" method="post" novalidate="novalidate">
    <input name="_method" type="hidden" value="patch" />
    .
    .
    .
</form>

<form accept-charset="UTF-8" action="/jobs/2" class="simple_form edit_job" id="edit_job_1" method="post" novalidate="novalidate">
    <input name="_method" type="hidden" value="patch" />
    .
    .
    .
</form>

这两种形式都将提交给 jobs#update 操作，但第一个带有 params[:id] == 1，第二个带有 params[:id] == 2。这就是您的需要，知道哪个对象正在被更新。希望现在清楚了...