Simple Mail Merge.gs

function onOpen() { var ss = SpreadsheetApp.getActiveSpreadsheet(); var menuEntries = [ {name: "Verzend nieuwsbrieven", functionName: "sendEmails"} ]; ss.addMenu("Nieuwsbrief", menuEntries); } function sendEmails() { var ss = SpreadsheetApp.getActiveSpreadsheet(); var dataSheet = ss.getSheets()[0]; var dataRange = dataSheet.getRange(2, 1, dataSheet.getMaxRows() - 1, 5); var templateSheet = ss.getSheets()[1]; var emailTemplate = templateSheet.getRange("B3").getValue(); var emailOnderwerp = templateSheet.getRange("B4").getValue(); var naamAfzender = templateSheet.getRange("B5").getValue(); var emailAfzender = templateSheet.getRange("B6").getValue(); var URL = templateSheet.getRange("B7").getValue(); var site = SitesApp.getPageByUrl(URL); var nieuwsbrief = site.getHtmlContent(); // Genereer regels voor mailtjes objects = getRowsData(dataSheet, dataRange); for (var i = 0; i < objects.length; ++i) { // Get a row object var rowData = objects[i]; // Genereer persoonlijk mailtje. var emailTekst = fillInTemplateFromObject(emailTemplate, rowData); // Voeg de nieuwsbrief toe aan mailtekst emailTekst += nieuwsbrief; emailTekst += '<br />De nieuwsbrief staat ook <a href="' + URL +'">online</a>.'; MailApp.sendEmail(rowData.emailAdres, emailOnderwerp, emailTekst, { name: naamAfzender, replyTo: emailAfzender, htmlBody: emailTekst}); } } // Replaces markers in a template string with values define in a JavaScript data object. // Arguments: // - template: string containing markers, for instance ${"Column name"} // - data: JavaScript object with values to that will replace markers. For instance // data.columnName will replace marker ${"Column name"} // Returns a string without markers. If no data is found to replace a marker, it is // simply removed. function fillInTemplateFromObject(template, data) { var email = template; // Search for all the variables to be replaced, for instance ${"Column name"} var templateVars = template.match(/\$\{\"[^\"]+\"\}/g); // Replace variables from the template with the actual values from the data object. // If no value is available, replace with the empty string. for (var i = 0; i < templateVars.length; ++i) { // normalizeHeader ignores ${"} so we can call it directly here. var variableData = data[normalizeHeader(templateVars[i])]; email = email.replace(templateVars[i], variableData || ""); } return email; } // getRowsData iterates row by row in the input range and returns an array of objects. // Each object contains all the data for a given row, indexed by its normalized column name. // Arguments: // - sheet: the sheet object that contains the data to be processed // - range: the exact range of cells where the data is stored // - columnHeadersRowIndex: specifies the row number where the column names are stored. // This argument is optional and it defaults to the row immediately above range; // Returns an Array of objects. function getRowsData(sheet, range, columnHeadersRowIndex) { columnHeadersRowIndex = columnHeadersRowIndex || range.getRowIndex() - 1; var numColumns = range.getEndColumn() - range.getColumn() + 1; var headersRange = sheet.getRange(columnHeadersRowIndex, range.getColumn(), 1, numColumns); var headers = headersRange.getValues()[0]; return getObjects(range.getValues(), normalizeHeaders(headers)); } // For every row of data in data, generates an object that contains the data. Names of // object fields are defined in keys. // Arguments: // - data: JavaScript 2d array // - keys: Array of Strings that define the property names for the objects to create function getObjects(data, keys) { var objects = []; for (var i = 0; i < data.length; ++i) { var object = {}; var hasData = false; for (var j = 0; j < data[i].length; ++j) { var cellData = data[i][j]; if (isCellEmpty(cellData)) { continue; } object[keys[j]] = cellData; hasData = true; } if (hasData) { objects.push(object); } } return objects; } // Returns an Array of normalized Strings. // Arguments: // - headers: Array of Strings to normalize function normalizeHeaders(headers) { var keys = []; for (var i = 0; i < headers.length; ++i) { var key = normalizeHeader(headers[i]); if (key.length > 0) { keys.push(key); } } return keys; } // Normalizes a string, by removing all alphanumeric characters and using mixed case // to separate words. The output will always start with a lower case letter. // This function is designed to produce JavaScript object property names. // Arguments: // - header: string to normalize // Examples: // "First Name" -> "firstName" // "Market Cap (millions) -> "marketCapMillions // "1 number at the beginning is ignored" -> "numberAtTheBeginningIsIgnored" function normalizeHeader(header) { var key = ""; var upperCase = false; for (var i = 0; i < header.length; ++i) { var letter = header[i]; if (letter == " " && key.length > 0) { upperCase = true; continue; } if (!isAlnum(letter)) { continue; } if (key.length == 0 && isDigit(letter)) { continue; // first character must be a letter } if (upperCase) { upperCase = false; key += letter.toUpperCase(); } else { key += letter.toLowerCase(); } } return key; } // Returns true if the cell where cellData was read from is empty. // Arguments: // - cellData: string function isCellEmpty(cellData) { return typeof(cellData) == "string" && cellData == ""; } // Returns true if the character char is alphabetical, false otherwise. function isAlnum(char) { return char >= 'A' && char <= 'Z' || char >= 'a' && char <= 'z' || isDigit(char); } // Returns true if the character char is a digit, false otherwise. function isDigit(char) { return char >= '0' && char <= '9'; }