如何在rails上的ruby中的render动作中传递多个参数

Question

我的源代码是

<div>
<h1>
  Music track</h1>
  <form id="filter">
<input type="text" [(ngModel)]="term" name="search" />
  </form>
  <table border="1" class="mytab">
    <tr>
   <ul class="list-group">
      <li class="list-group-item" *ngFor="let item of tracks|filter:term">
      {{item.title}}
      <div *ngFor="let genre of tracks.genres">
      {{tracks.genres?.tracks.genres.name}}
    </div>
      {{item.rating}}
    </li>
  </ul>
</tr>
</table>
<button id="add new track" name="add" (click)="addnew()">Add New Track</button>
</div>

它会抛出错误：

.modal-body
  =render 'folders/pieces/update', id: @piece , folder_id: @piece.folder_id

我想在渲染页面中传递两个参数

Answer 1

您的代码有效且正确 - 这正是您传递多个参数以进行渲染的方式。

错误来自{ "data":[ { "id":"27", "type":"visit", "attributes":{ "address-id":"82", "client-id":"26", "care-service-id":"2", "carer-id":"", "care-service":"Domiciliary care", "brief":null, "starts-at":"2017-03-03T12:12:00+00:00", "ends-at":"2017-03-03T14:14:00+00:00", "checked-in-at":null, "checked-out-at":null, "checkout-notes":null, "state":"unallocated", "care-plan-summary":"", "pay-rate":12.0, "pay-rate-currency":"GBP" }, "relationships":{ "address":{ "data":{ "id":"82", "type":"address" } }, "client":{ "data":{ "id":"26", "type":"client" } } } }, { "id":"28", "type":"visit", "attributes":{ "address-id":"112", "client-id":"46", "care-service-id":"2", "carer-id":"", "care-service":"Domiciliary care", "brief":null, "starts-at":"2017-03-04T12:12:00+00:00", "ends-at":"2017-03-04T14:14:00+00:00", "checked-in-at":null, "checked-out-at":null, "checkout-notes":null, "state":"unallocated", "care-plan-summary":"", "pay-rate":14.0, "pay-rate-currency":"GBP" }, "relationships":{ "address":{ "data":{ "id":"112", "type":"address" } }, "client":{ "data":{ "id":"46", "type":"client" } } } }, ... etc ... ], "included":[ { "id":"26", "type":"client", "attributes":{ "title":"Ms", "first-name":"Jessica", "middle-name":null, "last-name":"Rabbit", "preferred-name":null, "primary-phone":"555-909-9555", "secondary-phone":null, "email":"jessica.rabbit@example.com", "date-of-birth":"1985-10-14", "marital-status":"Single", "gender":"Female", "nationality":"British", "ethnicity":"Human", "religion":"N/A", "care-plan-summary":null, "photo-url":"/images/client_26.png", "allergies":[ ], "care-requirements":[ "Domiciliary care" ], "medical-conditions":[ ], "interests":[ ], "pets":[ ], "skill-requirements":[ ] }, "relationships":{ "addresses":{ "data":[ { "id":"82", "type":"address" } ] } } }, { "id":"46", "type":"client", "attributes":{ "title":"Mr", "first-name":"Donald", "middle-name":null, "last-name":"Duck", "preferred-name":null, "primary-phone":"555-779-1875", "secondary-phone":null, "email":"donald.duck@example.com", "date-of-birth":"1955-10-14", "marital-status":"Single", "gender":"Male", "nationality":"British", "ethnicity":"Duck", "religion":"N/A", "care-plan-summary":null, "photo-url":"/images/client_46.png", "allergies":[ ], "care-requirements":[ "Domiciliary care" ], "medical-conditions":[ ], "interests":[ ], "pets":[ ], "skill-requirements":[ ] }, "relationships":{ "addresses":{ "data":[ { "id":"112", "type":"address" } ] } } }, ... etc ... ], "links":{ }, "meta":{ "page-size":10, "page-number":1, "total-pages":1 } } 为@piece。

Answer 2

您的代码对于多个参数绝对正确。该错误是因为您在nil中获得@piece值。 您可以按如下方式处理nil值： @piece.try(:folder_id)

您的代码将类似于：

.modal-body =render 'folders/pieces/update', id: @piece , folder_id: @piece.try(:folder_id)

如果nil值，则不会抛出任何错误。