设置/修改与客户端脚本的记录关联

Setting / Modifying record associations with client script

我正在使用以下数据模型构建文档管理应用程序:

我正在尝试使用文档审批工作流模板作为起点,并将 Doc_Metadata 父级关联到 "Requests" 模型,这样每个审批请求都关联到(拥有)父元数据记录。

我已经让它从头到尾正常工作,没有抛出任何错误,但是,无论我做什么,我都无法获取要保存的元数据 - 请求关系。

我已经为下面的“添加请求”页面发布了我的客户端脚本,还附上了我的应用程序的 zip 文件,以防有人想查看更多细节。

非常感谢任何和所有建议,我喜欢 appmaker 的想法,但一直在努力理解关系与它们在 SQL 中的传统处理方式。

    /**
 * @fileoverview Client script functions for AddRequest page.
 */


/**
 * Navigates user to the add request page and sets page URL parameters.
 * @param {string=} metadataKey - optional metadata with this key will be used
 *     as default for the new approval request.
 */
function gotoAddRequestPage(metadataKey) {
  var params = {
    metadataKey: metadataKey
  };
// DEBUG
    console.log(params.metadataKey);
    console.log(metadataKey);

  gotoPage(app.pages.AddRequest, params);
}


/**
 * Creates a new request and redirects user to the edit screen afterwards.
 * @param {Widget} submitButton - button that triggers the action.
 */
function createRequest(submitButton) {
  var addRequestPage = submitButton.root;

  if (addRequestPage.validate()) { 
    submitButton.enabled = false;


    submitButton.datasource.saveChanges({
      success: function() {
        submitButton.enabled = true;

     //DEBUG
        console.log("requestId:" + submitButton.datasource.item._key);

        goToRequestDetailsPage(submitButton.datasource.item._key);
      },
      failure: function(error) {
        submitButton.enabled = true;
      }
    });
  }
}



/**
 * Creates a new request and redirects user to the edit screen afterwards.
 * @param {Widget} cancelButton - button that triggers the action.
 */
function cancelCreateRequest(cancelButton) {
  cancelButton.datasource.clearChanges();
  app.showPage(app.pages.Main);
}

function onRequestCreate () {
  google.script.url.getLocation(function(location) {
    var metadataKey = location.parameter.metadataKey;
    var props = {
    metadataKey: metadataKey
    };
    var allMetadataDs = app.datasources.AllMetadata;
    var metadataDs = allMetadataDs.item;
    var requestDs = app.datasources.RequestsByKey;

    //DERBUG//
    console.log("metadataKey: " + metadataKey);

    var newRequest = requestDs.createItem();
    newRequest.Metadata = metadataDs;

    var requests = metadataDs.Request;

    requests.push(newRequest);
  });
}

struggling to understand relations versus how they are traditionally handled in SQL

您可以将您的应用配置为使用云 SQL 数据库:https://developers.google.com/appmaker/models/cloudsql

I cannot get the Metadata - Request relation to save

这是一个应该有效的片段(假设您在自动保存模式下使用数据源)。

var allMetadataDs = app.datasources.AllMetadata;

// metadata record that you need should be selected at this point of time
var metadata = allMetadataDs.item;
var requestDs = app.datasources.RequestsByKey.modes.create;
var requestDraft = requestDs.item;

// This line should create relation between draft request record and
// existing Metadata record. 
requestDraft.Metadata = metadata;

// send your draft to server to save
requestDs.createItem(function(newRecord) {
  // log persisted request record asynchronously 
  console.log(newRecord);
});

顺便说一下,如果您在请求创建表单中添加包含元数据项的下拉列表,您的生活会变得更轻松。