Trigger Formula

The Trigger Formula offers a special way to store independent data in a column, but still use a formula to calculate it in some situations. It is useful to specify a column with trigger formulas which allows you to recalculate your data based on a set of conditions that you decide, clean data when a new value is entered, or provide default values for a column.

Description
app.jsx
app-func.jsx
app-class.jsx
index.html
styles.css
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The option GC.Data.ITriggerFormulaOption can be added at the column in the data source schema. These are the properties available:

Name Description
when (Required) Indicates when to trigger:
onNew: apply the formula on the data created
onNewAndUpdate: apply the formula on the data created or updated.
formula (Required) Indicates the applied formula.
[fields] (Optional) Indicates which fields could affect the formula to trigger:
* - indicates that all data field
field1,field2,field3 - indicates a series of data fields
the property could be omitted when be onNew

The sample below shows how to config the triggers:

var table = dataManager.addTable("Table", {
    schema: {
        columns: {
            createdDate: {
                dataType: "Date",
                trigger: {
                  when: "onNew",            // apply the formula on created
                  formula: "=NOW()",        // trigger formula to set current time
                  // fields: "*"            // when on new, it's no need to specify the affected fields
                },
            },
            updatedDate: {
                dataType: "Date",
                trigger: {
                  when: "onNewAndUpdate",   // apply the formula on created and updated
                  formula: "=NOW()",        // trigger formula to set current time
                  fields: "*"               // all fields changed will apply the formula
                },
            },
            label: {
                trigger: {
                    when: "onNewAndUpdate",      // apply the formula on updated
                    formula: "=UPPER([@label])"  // upper the input text of label field
                    fields: "label",             // current column value updated will apply the formula
                  },
            },
            amount: {
                dataType: "number",
                trigger: {
                    when: "onNewAndUpdate",             // apply the formula on updated
                    formula: "=[@price] * [@quantity]"  // automatic evaluate the amount
                    fields: "price,quantity",           // the changes of the price and quantity columns will apply the formula
                  },
            },
            price: { dataType: 'number' },
            quantity: { dataType: 'number' }
        },
    }
});
The option GC.Data.ITriggerFormulaOption can be added at the column in the data source schema. These are the properties available: Name Description when (Required) Indicates when to trigger:onNew: apply the formula on the data createdonNewAndUpdate: apply the formula on the data created or updated. formula (Required) Indicates the applied formula. [fields] (Optional) Indicates which fields could affect the formula to trigger:* - indicates that all data fieldfield1,field2,field3 - indicates a series of data fieldsthe property could be omitted when be onNew The sample below shows how to config the triggers:
import * as React from 'react'; import * as ReactDOM from 'react-dom'; import './styles.css'; import { AppFunc } from './app-func'; import { App } from './app-class'; // 1. Functional Component sample ReactDOM.render(<AppFunc />, document.getElementById('app')); // 2. Class Component sample // ReactDOM.render(<App />, document.getElementById('app'));
/*REPLACE_MARKER*/ /*DO NOT DELETE THESE COMMENTS*/ import * as React from 'react'; import * as ReactDOM from 'react-dom'; import GC from '@mescius/spread-sheets'; import "@mescius/spread-sheets-tablesheet"; import { SpreadSheets, Worksheet } from '@mescius/spread-sheets-react'; import './styles.css'; function updateOrderWithTriggerFormulas(spread) { var dataManager = spread.dataManager(); var orderTable = dataManager.addTable("orderTable", { remote: { read: { url: "$DEMOROOT$/spread/source/data/orderAmountTrigger.csv" } }, schema: { type: "csv", columns: { SKU: { dataType: "string", trigger: { when: "onNewAndUpdate", formula: "=UPPER(TRIM([@SKU]))", // Format the input SKU text fields: "SKU" // If the SKU field be inputted, trigger the formula to format the input text } }, OrderDate: { dataType: "date", trigger: { when: "onNew", // When an order added, records the order created date formula: "=TODAY()" } }, lastUpdatedTime: { dataType: "date", trigger: { when: "onNewAndUpdate", formula: "=NOW()", fields: "*" // When any field be updated or the order be added, records the order updated time } }, lastUpdateUser: { dataType: "string", trigger: { when: "onNewAndUpdate", formula: "=ACTIVEUSER()", // The user could determine how to getting the current updated user by them self fields: "*" // When any field be updated or the order be added, records the updated user } }, OrderPhone: { dataType: "string", trigger: { when: "onNewAndUpdate", formula: "=IF(ISBLANK([@OrderPhone]),[@customer.Phone],[@OrderPhone])", fields: "CustomerId,OrderPhone"// Provide the customer phone when the order phone is blank } }, Amount: { dataType: "number", trigger: { when: "onNewAndUpdate", formula: "=LET(amount, [@UnitPrice] * [@Quantity], IF([@Quantity] > 30, amount * 0.8, amount))", fields: "UnitPrice,Quantity" // When the UnitPrice or Quantity fields updated or the order be added, Amount field will get a calculated result automatically } }, CustomerId: { lookup: { name: 'customer', columns: [ { value: "Id", width: 60 }, { value: "CompanyName", width: 200 }, { value: "ContactName", width: 140 }, { value: "ContactTitle", width: 140 } ] } }, Quantity: { dataType: "number" }, UnitPrice: { dataType: "number" }, } } }); var customerTable = dataManager.addTable("customerTable", { remote: { read: { url: getBaseApiUrl() + "/Customer" } } }); //add relationship between order table, customer table table dataManager.addRelationship(orderTable, "CustomerId", "customer", customerTable, "Id", "orders"); //init a table sheet var sheet = spread.addSheetTab(0, "TableSheet1", GC.Spread.Sheets.SheetType.tableSheet); var myView = orderTable.addView("myView", [ { value: "Id", width: 60, visible: false }, { value: "SKU", width: 120 }, { value: "Quantity", width: 100 }, { value: "UnitPrice", width: 100 }, { value: "Amount", width: 100 }, { value: "CustomerId", caption: 'Customer', width: 120, defaultValue:'ALFKI', visible: false }, { value: "OrderPhone", caption: 'Order Phone', width: 120 }, { value: "OrderDate", width: 150, readonly: true, visible: false }, { value: "lastUpdatedTime", width: 180, readonly: true, visible: false }, { value: "lastUpdateUser", width: 150, readonly: true, visible: false }, ]); myView.fetch().then(function() { sheet.setDataView(myView); }); spread.resumePaint(); } function addActiveUserFunction() { function ActiveUserFunction() { this.name = "ACTIVEUSER"; } ActiveUserFunction.prototype = new GC.Spread.CalcEngine.Functions.Function("ACTIVEUSER", 0 ,0, { name: "ACTIVEUSER"}); ActiveUserFunction.prototype.evaluate = function () { let fakeNames = [ "Warner", "Guerrero", "Mathis", "Morton", "Knight", "Cox", "Keller", "Pena", "Maxwell", "Ford", "Bass", "Morton", "Parsons" ]; return fakeNames[Math.floor(Math.random() * fakeNames.length)]; }; GC.Spread.CalcEngine.Functions.defineGlobalCustomFunction("ACTIVEUSER", new ActiveUserFunction()); } function getBaseApiUrl() { return window.location.href.match(/http.+spreadjs\/demos\//)[0] + 'server/api'; } export function AppFunc() { let spread = null; let initSpread = function (value) { spread = value; spread.suspendPaint(); spread.clearSheets(); spread.options.autoFitType = GC.Spread.Sheets.AutoFitType.cellWithHeader; spread.options.allowDynamicArray = true; spread.options.highlightInvalidData = true; spread.options.calcOnDemand = true; addActiveUserFunction(); updateOrderWithTriggerFormulas(spread); spread.resumePaint(); } return ( <div class="sample-tutorial"> <div class="sample-spreadsheets"> <SpreadSheets workbookInitialized={spread => initSpread(spread)}> </SpreadSheets> </div> </div> ); }
/*REPLACE_MARKER*/ /*DO NOT DELETE THESE COMMENTS*/ import * as React from 'react'; import * as ReactDOM from 'react-dom'; import GC from '@mescius/spread-sheets'; import "@mescius/spread-sheets-tablesheet"; import { SpreadSheets, Worksheet } from '@mescius/spread-sheets-react'; import './styles.css'; const Component = React.Component; function _getElementById(id) { return document.getElementById(id); } function updateOrderWithTriggerFormulas(spread) { var dataManager = spread.dataManager(); var orderTable = dataManager.addTable("orderTable", { remote: { read: { url: "$DEMOROOT$/spread/source/data/orderAmountTrigger.csv" } }, schema: { type: "csv", columns: { SKU: { dataType: "string", trigger: { when: "onNewAndUpdate", formula: "=UPPER(TRIM([@SKU]))", // Format the input SKU text fields: "SKU" // If the SKU field be inputted, trigger the formula to format the input text } }, OrderDate: { dataType: "date", trigger: { when: "onNew", // When an order added, records the order created date formula: "=TODAY()" } }, lastUpdatedTime: { dataType: "date", trigger: { when: "onNewAndUpdate", formula: "=NOW()", fields: "*" // When any field be updated or the order be added, records the order updated time } }, lastUpdateUser: { dataType: "string", trigger: { when: "onNewAndUpdate", formula: "=ACTIVEUSER()", // The user could determine how to getting the current updated user by them self fields: "*" // When any field be updated or the order be added, records the updated user } }, OrderPhone: { dataType: "string", trigger: { when: "onNewAndUpdate", formula: "=IF(ISBLANK([@OrderPhone]),[@customer.Phone],[@OrderPhone])", fields: "CustomerId,OrderPhone"// Provide the customer phone when the order phone is blank } }, Amount: { dataType: "number", trigger: { when: "onNewAndUpdate", formula: "=LET(amount, [@UnitPrice] * [@Quantity], IF([@Quantity] > 30, amount * 0.8, amount))", fields: "UnitPrice,Quantity" // When the UnitPrice or Quantity fields updated or the order be added, Amount field will get a calculated result automatically } }, CustomerId: { lookup: { name: 'customer', columns: [ { value: "Id", width: 60 }, { value: "CompanyName", width: 200 }, { value: "ContactName", width: 140 }, { value: "ContactTitle", width: 140 } ] } }, Quantity: { dataType: "number" }, UnitPrice: { dataType: "number" }, } } }); var customerTable = dataManager.addTable("customerTable", { remote: { read: { url: getBaseApiUrl() + "/Customer" } } }); //add relationship between order table, customer table table dataManager.addRelationship(orderTable, "CustomerId", "customer", customerTable, "Id", "orders"); //init a table sheet var sheet = spread.addSheetTab(0, "TableSheet1", GC.Spread.Sheets.SheetType.tableSheet); var myView = orderTable.addView("myView", [ { value: "Id", width: 60, visible: false }, { value: "SKU", width: 120 }, { value: "Quantity", width: 100 }, { value: "UnitPrice", width: 100 }, { value: "Amount", width: 100 }, { value: "CustomerId", caption: 'Customer', width: 120, defaultValue:'ALFKI', visible: false }, { value: "OrderPhone", caption: 'Order Phone', width: 120 }, { value: "OrderDate", width: 150, readonly: true, visible: false }, { value: "lastUpdatedTime", width: 180, readonly: true, visible: false }, { value: "lastUpdateUser", width: 150, readonly: true, visible: false }, ]); myView.fetch().then(function() { sheet.setDataView(myView); }); spread.resumePaint(); } function addActiveUserFunction() { function ActiveUserFunction() { this.name = "ACTIVEUSER"; } ActiveUserFunction.prototype = new GC.Spread.CalcEngine.Functions.Function("ACTIVEUSER", 0 ,0, { name: "ACTIVEUSER"}); ActiveUserFunction.prototype.evaluate = function () { let fakeNames = [ "Warner", "Guerrero", "Mathis", "Morton", "Knight", "Cox", "Keller", "Pena", "Maxwell", "Ford", "Bass", "Morton", "Parsons" ]; return fakeNames[Math.floor(Math.random() * fakeNames.length)]; }; GC.Spread.CalcEngine.Functions.defineGlobalCustomFunction("ACTIVEUSER", new ActiveUserFunction()); } function getBaseApiUrl() { return window.location.href.match(/http.+spreadjs\/demos\//)[0] + 'server/api'; } export class App extends Component { constructor(props) { super(props); this.spread = null; } render() { return ( <div class="sample-tutorial"> <div class="sample-spreadsheets"> <SpreadSheets workbookInitialized={spread => this.initSpread(spread)}> </SpreadSheets> </div> </div> ); } initSpread(spread) { this.spread = spread; spread.suspendPaint(); spread.clearSheets(); spread.options.autoFitType = GC.Spread.Sheets.AutoFitType.cellWithHeader; spread.options.allowDynamicArray = true; spread.options.highlightInvalidData = true; spread.options.calcOnDemand = true; addActiveUserFunction(); updateOrderWithTriggerFormulas(spread); spread.resumePaint(); } }
<!doctype html> <html style="height:100%;font-size:14px;"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <link rel="stylesheet" type="text/css" href="$DEMOROOT$/en/react/node_modules/@mescius/spread-sheets/styles/gc.spread.sheets.excel2013white.css"> <script src="$DEMOROOT$/spread/source/data/orderDataSource.js" type="text/javascript"></script> <script src="$DEMOROOT$/spread/source/data/orderYearProductDataSource.js" type="text/javascript"></script> <!-- SystemJS --> <script src="$DEMOROOT$/en/react/node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('$DEMOROOT$/en/lib/react/license.js').then(function () { System.import('./src/app'); }); </script> </head> <body> <div id="app" style="height: 100%;"></div> </body> </html>
.sample-tutorial { position: relative; height: 100%; overflow: hidden; } .sample-spreadsheets { width: 100%; height: 100%; overflow: hidden; float: left; } .options-container { float: right; width: 210px; padding: 12px; height: 100%; box-sizing: border-box; background: #fbfbfb; overflow: auto; } .option-row { font-size: 14px; padding: 5px; margin-top: 10px; } label { display: block; margin-bottom: 3px; margin-top: 3px; } input { padding: 4px 6px; } input[type=button] { margin-top: 6px; display: block; width: 100%; text-align: center; } input[type=text] { width: 230px; } body { position: absolute; top: 0; bottom: 0; left: 0; right: 0; margin: 0; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true, react: true }, meta: { '*.css': { loader: 'css' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { '@mescius/spread-sheets': 'npm:@mescius/spread-sheets/index.js', '@mescius/spread-sheets-tablesheet': 'npm:@mescius/spread-sheets-tablesheet/index.js', '@mescius/spread-sheets-react': 'npm:@mescius/spread-sheets-react/index.js', '@grapecity/jsob-test-dependency-package/react-components': 'npm:@grapecity/jsob-test-dependency-package/react-components/index.js', 'react': 'npm:react/umd/react.production.min.js', 'react-dom': 'npm:react-dom/umd/react-dom.production.min.js', 'css': 'npm:systemjs-plugin-css/css.js', 'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js', 'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.js' }, // packages tells the System loader how to load when no filename and/or no extension packages: { src: { defaultExtension: 'jsx' }, "node_modules": { defaultExtension: 'js' }, } }); })(this);