Question

我的rails应用程序正在通过其API向Salesforce进行外部查询以提取一些记录。当我在控制器中收到这些记录时，我想在将JSON发送到我的视图之前在某些字段上使用number_to_currency和link_to帮助器。然后将记录呈现在要显示的表中。我知道这些修改必须在控制器中进行，但我不确定如何在渲染json之前执行它们：@pendingloanparts运行。

此前表格如下：

<td><%= loanpart.Loan__r.Business_Name__r.Name %></td>
<td><%= link_to loanpart.Loan__r.Name, loan_path(loanpart.Loan__r.Id) %></td>
<td><%= loanpart.Loan__r.Loan_Risk__c %></td>
<td><%= loanpart.Interest_Rate__c %>%</td>
<td><%= number_to_currency(loanpart.Amount_Lent__c) %></td>
<td><%= loanpart.Loan__r.Funded__c %>%</td>
<td><%= loanpart.Loan__r.Time_Left_on_Listing__c %></td>

我现在正在使用AJAX在收到响应时从salesforce API返回数据。

观点：

<script type="text/javascript">
  $.ajax({
    url: "/pull_pending_loans",
    dataType: "json",
    cache: false,
    success: function(data){
      $('#ajax-loader').hide()
      $.each(data, function(index, element) {
        console.log(element)
        $('#pendingloanlist tbody').append("<tr><td>" + element.Loan__r.Business_Name__r.Name + "</td><td>" 
                                                      + element.Loan__r.Name + "</td><td>"
                                                      + element.Loan__r.Loan_Risk__c + "</td><td>"
                                                      + element.Interest_Rate__c + "%" + "</td><td>"
                                                      + element.Amount_Lent__c + "</td><td>"
                                                      + element.Loan__r.Funded__c + "%" + "</td><td>"
                                                      + element.Loan__r.Time_Left_on_Listing__c + "</td></tr>");
      });
    }
  });
</script>

<div class="profile container content">
  <div class="row">
    <%= render 'lenders/sidebar' %> 
      <!-- Begin Content -->
        <div class="col-md-9">
          <div class="profile-body">
            <!-- Pending Loans -->
              <div class="panel panel-purple margin-bottom-40" id="small">
                <div class="panel-heading">
                  <h3 class="panel-title"><i class="fa fa-refresh"></i> Pending Loans</h3>
                </div>
                <div class="table-responsive">
                  <table class="table table-hover" id="pendingloanlist">
                    <thead>
                      <tr>
                        <th>Company</th>
                        <th>Loan Title</th>
                        <th>Risk</th>
                        <th>Rate</th>
                        <th>Amount</th>
                        <th>% Funded</th>
                        <th>Time Left</th>
                      </tr>
                    </thead>
                    <tbody>
                      <td colspan="100" id="ajax-loader">
                        <center><%= image_tag("loading.gif") %></center>
                      </td>
                    </tbody>
                  </table>
                </div>
              </div>                  
            <!-- Pending Loans -->
          </div>
        </div>
      <!-- End Content -->
    </div>
</div>

控制器操作：

def pull_pending_loans
  @user = current_user
  if @user.activated?
    client = Restforce.new
    @account = client.find('Account', @user.salesforce_id, 'Id')
    pending_query = "select Loan__r.Business_Name__r.Name, Loan__r.Id, Loan__r.Name, Loan__r.Loan_Risk__c, Interest_Rate__c, Amount_Lent__c, Status__c, Loan__r.Time_Left_on_Listing__c, Loan__r.Funded__c from Loan_Part__c where Account__c ='%s' AND Status__c = 'Pledge'" % @account.Id.to_s
    @pendingloanparts = client.query(pending_query)
    render json: @pendingloanparts
  end
end 

def pending_loans
  @user = current_user
end

Answer 1

首先：根据MVC范例，应该在视图中进行格式化为了实现这一点，Rails使用构建器来呈现几乎任何类型的输出格式。

您可以使用jbuilder来使用jbuilder视图来呈现JSON，在这个类型为... json.jbuilder的视图中，您可以像在任何其他视图中一样使用视图助手。

说这个，你也可以打破MVC规则并在控制器中包含帮助器。请参阅this answer。

在构建JSON对象之前，Rails在字段上使用帮助程序

1 个答案: