处理请求

集算表支持自定义函数来配置远程请求选项。

默认情况下,集算表将通过一个对象来配置远程请求。如果你想自己处理这些请求,只需将对象替换到函数中。而数据的变化将被传递给函数。 数据变化的细节在 "概览 "的 "请求和响应 "部分。 自动同步模式 在 "自动同步 "模式下处理请求。 批量模式 以 "批处理 "模式处理请求。 改变数据源选项 当一个表使用CRUD函数而不是CRUD选项时,由于安全问题,这些函数在JSON序列化/反序列化后不能被保存和恢复。 在调用fromJSON方法后设置表的数据源选项可以使表重新工作。 重新加载数据 当一个表的fetch方法被调用且其reload参数为真时,该表将再次加载数据。 视图的获取方法与表的获取方法有相同的重载参数。
/*REPLACE_MARKER*/ /*DO NOT DELETE THESE COMMENTS*/ var tableName = "Employee"; var baseApiUrl = getBaseApiUrl(); var apiUrl = baseApiUrl + "/" + tableName; var batchApiUrl = baseApiUrl + "/" + tableName + 'Collection'; var tablesheetName = 'MyTableSheet'; var spread, sheet, view, selections, table; window.onload = function () { spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), { sheetCount: 0 }); initSpread(spread); bindEvents(); }; function sendRequest(url, options) { options.method = options.method || 'POST'; options.headers = { 'Content-Type': 'application/json; charset=utf-8' }; if (options.body) { options.body = JSON.stringify(options.body); } return fetch(url, options).then(resp => { if (resp.ok) { return resp.json(); } else { throw resp.statusText; } }); } function initSpread(spread) { spread.suspendPaint(); spread.clearSheets(); spread.options.autoFitType = GC.Spread.Sheets.AutoFitType.cellWithHeader; //init a data manager var dataManager = spread.dataManager(); var myTable = dataManager.addTable("myTable", { remote: { read: function () { return sendRequest(apiUrl, { method: 'GET' }); }, batch: function (changes) { return sendRequest(batchApiUrl, { body: changes }); } }, batch: true, schema: { columns: { "Id": { dataType: "number" }, "LastName": { dataType: "string" }, "FirstName": { dataType: "string" }, "HomePhone": { dataType: "string" }, "Notes": { dataType: "string" } } } }); table = myTable; //init a table sheet sheet = spread.addSheetTab(0, tablesheetName, GC.Spread.Sheets.SheetType.tableSheet); var rowActions = GC.Spread.Sheets.TableSheet.BuiltInRowActions; var options = sheet.rowActionOptions(); options.push( rowActions.removeRow, rowActions.saveRow, rowActions.resetRow, ); sheet.rowActionOptions(options); //bind a view to the table sheet myTable.fetch().then(function () { view = myTable.addView("myView", [ { value: "Id", width: 50, caption: "ID" }, { value: "FirstName", width: 100, caption: "First Name" }, { value: "LastName", width: 100, caption: "Last Name" }, { value: "HomePhone", width: 100, caption: "Phone" }, { value: "Notes", width: 100, caption: "Notes" } ]); sheet.setDataView(view); }); spread.bind(GC.Spread.Sheets.Events.SelectionChanged, function (e, args) { selections = args.newSelections; }); spread.resumePaint(); } function bindEvents() { var removeButton = document.getElementById('remove'); removeButton.addEventListener('click', function () { traverseSelectionsRowsWithOperation(function (row) { sheet.removeRow(row); }); }); var saveButton = document.getElementById('save'); saveButton.addEventListener('click', function () { traverseSelectionsRowsWithOperation(function (row) { sheet.saveRow(row); }); }); var resetButton = document.getElementById('reset'); resetButton.addEventListener('click', function () { traverseSelectionsRowsWithOperation(function (row) { sheet.resetRow(row); }); }); var saveAllButton = document.getElementById('save-all'); saveAllButton.addEventListener('click', function () { spread.commandManager().SaveAll.execute(spread, { sheetName: tablesheetName }); }); var submitButton = document.getElementById('submit'); submitButton.addEventListener('click', function () { sheet.submitChanges(); }); var discardButton = document.getElementById('discard'); discardButton.addEventListener('click', function () { sheet.cancelChanges(); }); } function traverseSelectionsRowsWithOperation(operation) { if (selections) { for (var i = 0; i < selections.length; i++) { var selection = selections[i]; var row = selection.row; var rowCount = selection.rowCount; for (var r = row + rowCount - 1; r >= row; r--) { operation(r); } } } } function getBaseApiUrl() { return window.location.href.match(/http.+spreadjs\/SpreadJSTutorial\//)[0] + 'server/api'; }
<!doctype html> <html style="height:100%;font-size:14px;"> <head> <meta name="spreadjs culture" content="zh-cn" /> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="stylesheet" type="text/css" href="$DEMOROOT$/zh/purejs/node_modules/@grapecity/spread-sheets/styles/gc.spread.sheets.excel2013white.css"> <!-- Promise Polyfill for IE, https://www.npmjs.com/package/promise-polyfill --> <script src="https://cdn.jsdelivr.net/npm/promise-polyfill@8/dist/polyfill.min.js"></script> <script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity/spread-sheets/dist/gc.spread.sheets.all.min.js" type="text/javascript"></script> <script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity/spread-sheets-tablesheet/dist/gc.spread.sheets.tablesheet.min.js" type="text/javascript"></script> <script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity/spread-sheets-resources-zh/dist/gc.spread.sheets.resources.zh.min.js" type="text/javascript"></script> <script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script> <script src="app.js" type="text/javascript"></script> <link rel="stylesheet" type="text/css" href="styles.css"> </head> <body> <div class="sample-tutorial"> <div id="ss" class="sample-spreadsheets"></div> <div id="options-container" class="options-container"> <fieldset> <legend>Active Row Operations</legend> <div class="field-line"> <input id="remove" type="button" value="Remove"> </div> <div class="field-line"> <input id="save" type="button" value="Save"> </div> <div class="field-line"> <input id="reset" type="button" value="Reset"> </div> </fieldset> <fieldset> <legend>Save All Rows</legend> <div class="field-line"> <input id="save-all" type="button" value="Save All"> </div> </fieldset> <fieldset> <legend>Batch Operations</legend> <div class="field-line"> <input type="button" value="Submit" id="submit"> </div> <div class="field-line"> <input type="button" value="Discard" id="discard"> </div> </fieldset> </div> </div> </html>
body { position: absolute; top: 0; bottom: 0; left: 0; right: 0; } fieldset { padding: 6px; margin: 0; margin-top: 10px; } .sample-tutorial { position: relative; height: 100%; overflow: hidden; } .sample-spreadsheets { width: calc(100% - 280px); height: 100%; overflow: hidden; float: left; } .options-container { float: right; width: 280px; padding: 12px; height: 100%; box-sizing: border-box; background: #fbfbfb; overflow: auto; } fieldset span, fieldset input, fieldset select { display: inline-block; text-align: left; } fieldset input[type=text] { width: calc(100% - 58px); } fieldset input[type=button] { width: 100%; text-align: center; } fieldset select { width: calc(100% - 50px); } .field-line { margin-top: 4px; } .field-inline { display: inline-block; vertical-align: middle; } fieldset label.field-inline { width: 100px; } fieldset input.field-inline { width: calc(100% - 100px - 12px); } .required { color: red; font-weight: bold; } #fields { display: none; } #fields.show { display: block; }