I use Handsontable , I manage to add dynamically a border cell on a specific cell (row,cell).
But I don't manage to delete/remove it dynamically after.
I'm looking for a solution.
Thanks for helping
I have found a solution
I share it :
function cell_no_border(hot, row, col) {
var bordersMeta = hot.getCellMeta(row, col).borders;
if(bordersMeta != null){
bordersMeta.top.hide = true;
bordersMeta.bottom.hide = true;
bordersMeta.left.hide = true;
bordersMeta.right.hide = true;
}
var className = 'border_row' + row + 'col' + col;
removeBordersFromDom(className);
}
Related
I'm trying to combine several Google Document inside one, but images inside the originals documents are inserted twice. One is at the right location, the other one is at the end of the newly created doc.
From what I saw, these images are detected as Paragraph by the script.
As you might see in my code below, I've been inspired by similar topics found here.
One of them suggested searching for child Element inside the Paragraph Element, but debugging showed that there is none. The concerned part of the doc will always be inserted with appendParagraph method as the script is not able to properly detect the image.
This is why the other relevant topic I found cannot work here : it suggested inserting the image before the paragraph itself but it cannot detects it.
Logging with both default Logger and console.log from Stackdriver will display an object typed as Paragraph.
The execution step by step did not show displayed any loop calling the appendParagraph method twice.
/* chosenParts contains list of Google Documents name */
function concatChosenFiles(chosenParts) {
var folders = DriveApp.getFoldersByName(folderName);
var folder = folders.hasNext() ? folders.next() : false;
var parentFolders = folder.getParents();
var parentFolder = parentFolders.next();
var file = null;
var gdocFile = null;
var fileContent = null;
var offerTitle = "New offer";
var gdocOffer = DocumentApp.create(offerTitle);
var gfileOffer = DriveApp.getFileById(gdocOffer.getId()); // transform Doc into File in order to choose its path with DriveApp
var offerHeader = gdocOffer.addHeader();
var offerContent = gdocOffer.getBody();
var header = null;
var headerSubPart = null;
var partBody= null;
var style = {};
parentFolder.addFile(gfileOffer); // place current offer inside generator folder
DriveApp.getRootFolder().removeFile(gfileOffer); // remove from home folder to avoid copy
for (var i = 0; i < chosenParts.length; i++) {
// First retrieve Document to combine
file = folder.getFilesByName(chosenParts[i]);
file = file.hasNext() ? file.next() : null;
gdocFile = DocumentApp.openById(file.getId());
header = gdocFile.getHeader();
// set Header from first doc
if ((0 === i) && (null !== header)) {
for (var j = 0; j < header.getNumChildren(); j++) {
headerSubPart = header.getChild(j).copy();
offerHeader.appendParagraph(headerSubPart); // Assume header content is always a paragraph
}
}
fileContent = gdocFile.getBody();
// Analyse file content and insert each part inside the offer with the right method
for (var j = 0; j < fileContent.getNumChildren(); j++) {
// There is a limit somewhere between 50-100 unsaved changed where the script
// wont continue until a batch is commited.
if (j % 50 == 0) {
gdocOffer.saveAndClose();
gdocOffer = DocumentApp.openById(gdocOffer.getId());
offerContent = gdocOffer.getBody();
}
partBody = fileContent.getChild(j).copy();
switch (partBody.getType()) {
case DocumentApp.ElementType.HORIZONTAL_RULE:
offerContent.appendHorizontalRule();
break;
case DocumentApp.ElementType.INLINE_IMAGE:
offerContent.appendImage(partBody);
break;
case DocumentApp.ElementType.LIST_ITEM:
offerContent.appendListItem(partBody);
break;
case DocumentApp.ElementType.PAGE_BREAK:
offerContent.appendPageBreak(partBody);
break;
case DocumentApp.ElementType.PARAGRAPH:
// Search for image inside parapraph type
if (partBody.asParagraph().getNumChildren() != 0 && partBody.asParagraph().getChild(0).getType() == DocumentApp.ElementType.INLINE_IMAGE)
{
offerContent.appendImage(partBody.asParagraph().getChild(0).asInlineImage().getBlob());
} else {
offerContent.appendParagraph(partBody.asParagraph());
}
break;
case DocumentApp.ElementType.TABLE:
offerContent.appendTable(partBody);
break;
default:
style[DocumentApp.Attribute.BOLD] = true;
offerContent.appendParagraph("Element type '" + partBody.getType() + "' from '" + file.getName() + "' could not be merged.").setAttributes(style);
console.log("Element type '" + partBody.getType() + "' from '" + file.getName() + "' could not be merged.");
Logger.log("Element type '" + partBody.getType() + "' from '" + file.getName() + "' could not be merged.");
}
}
// page break at the end of each part.
offerContent.appendPageBreak();
}
}
The problem occurs no matter how much files are combined, using one is enough to reproduce.
If there's only one image in the file (no spaces nor line feed around) and if the "appendPageBreak" is not used afterward, it will not occur. When some text resides next to the image, then the image is duplicated.
One last thing : Someone suggested that it is "due to natural inheritance of formatting", but I did not find how to prevent that.
Many thanks to everyone who'll be able to take a look at this :)
Edit : I adapted the paragraph section after #ziganotschka suggestions
It is very similar to this subject except its solution does not work here.
Here is the new piece of code :
case DocumentApp.ElementType.PARAGRAPH:
// Search for image inside parapraph type
if(partBody.asParagraph().getPositionedImages().length) {
// Assume only one image per paragraph (#TODO : to improve)
tmpImage = partBody.asParagraph().getPositionedImages()[0].getBlob().copyBlob();
// remove image from paragraph in order to add only the paragraph
partBody.asParagraph().removePositionedImage(partBody.asParagraph().getPositionedImages()[0].getId());
tmpParagraph = offerContent.appendParagraph(partBody.asParagraph());
// Then add the image afterward, without text
tmpParagraph.addPositionedImage(tmpImage);
} else if (partBody.asParagraph().getNumChildren() != 0 && partBody.asParagraph().getChild(0).getType() == DocumentApp.ElementType.INLINE_IMAGE) {
offerContent.appendImage(partBody.asParagraph().getChild(0).asInlineImage().getBlob());
} else {
offerContent.appendParagraph(partBody.asParagraph());
}
break;
Unfortunately, it stills duplicate the image. And if I comment the line inserting the image (tmpParagraph.addPositionedImage(tmpImage);) then no image is inserted at all.
Edit 2 : it is a known bug in Google App Script
https://issuetracker.google.com/issues/36763970
See comments for some workaround.
Your image is embedded as a 'Wrap text', rather than an Inline image
This is why you cannot retrieve it with getBody().getImages();
Instead, you can retrieve it with getBody().getParagraphs();[index].getPositionedImages()
I am not sure why exactly your image is copied twice, but as a workaround you can make a copy of the image and insert it as an inline image with
getBody().insertImage(childIndex, getBody().getParagraphs()[index].getPositionedImages()[index].copy());
And subsequently
getBody().getParagraphs()[index].getPositionedImages()[index].removeFromParent();
Obviously, you will need to loop through all the paragraphs and check for each one either it has embedded positioned images in order to retrieve them with the right index and proceed.
Add your PositionedImages at the end of your script after you add all your other elements. From my experience if other elements get added to the document after the the image positioning paragraph, extra images will be added.
You can accomplish this my storing a reference to the paragraph element that will be used as the image holder, and any information (height, width, etc) along with the blob from the image. And then at the end of your script just iterate over the stored references and add the images.
var imageParagraphs = [];
...
case DocumentApp.ElementType.PARAGRAPH:
var positionedImages = element.getPositionedImages();
if (positionedImages.length > 0){
var imageData = [];
for each(var image in positionedImages){
imageData.push({
height: image.getHeight(),
width: image.getWidth(),
leftOffset: image.getLeftOffset(),
topOffset: image.getTopOffset(),
layout: image.getLayout(),
blob: image.getBlob()
});
element.removePositionedImage(image.getId());
}
var p = merged_doc_body.appendParagraph(element.asParagraph());
imageParagraphs.push({element: p, imageData: imageData});
}
else
merged_doc_body.appendParagraph(element);
break;
...
for each(var p in imageParagraphs){
var imageData = p.imageData
var imageParagraph = p.element
for each(var image in imageData){
imageParagraph.addPositionedImage(image.blob)
.setHeight(image.height)
.setWidth(image.width)
.setLeftOffset(image.leftOffset)
.setTopOffset(image.topOffset)
.setLayout(image.layout);
}
}
I'm trying to replace a selection with an image using Google Suite API.
I figured that if I can get the index of the selection I can insert an image at that specific index and then remove every selected element. However, I can't seem to get the index working correctly.
I've tried the following, but it only returns -1, even though I'm selecting a word in the middle of the text.
var doc = DocumentApp.getActiveDocument();
var selection = doc.getSelection();
var elements = selection.getRangeElements();
if(elements.length > 0){
return elements[0].getStartOffset();
}
I've tried searching the documentation, but can't find a solution.
What I want is something like:
var selection = doc.getSelection();
selection.replaceWithImage(image);
Thanks in advance.
I have a script which helps me locate things inside of a document. In fact, I used it last night to create an envelope printer script for Google Docs.
Here's a link to it. I'm always changing it to fit my particular needs so feel free to have fun with. It will help you to find images too.
I solved it by moving the position of the cursor to the beginning of the selection. Here is the code commented for others having the same question.
function insertImage(imageURL){
var doc = DocumentApp.getActiveDocument();
var body = doc.getBody();
var UI = DocumentApp.getUi();
var blob = UrlFetchApp.fetch(imageURL).getBlob();
var cursor = doc.getCursor();
/* If cursor is null, there is a selection not a position */
if(!cursor){
var selection = doc.getSelection();
/* Get all elements selected */
var elements = selection.getRangeElements();
if(elements[0]){
var element = elements[0].getElement();
var index;
var previousElement = element.getPreviousSibling();
var fakedElement = false;
var position;
/* If the element is type TEXT you can't get index from getChildIndex. */
if(element.getType().toString() == "TEXT"){
index = elements[0].getStartOffset();
if(element.getText() === " "){
element = doc.insertParagraph(index, "");
fakedElement = true;
}
} else {
index = element.getParent().getChildIndex(element);
}
/* If the selected element is an image, we need to append a fake paragraph to keep the cursor poisition. Dont worry, this will be removed later. */
if(elements.length === 1 && element.getType().toString() == "INLINE_IMAGE"){
element = doc.insertParagraph(index, "");
fakedElement = true;
}
/* Go through each element and remove it. */
elements.forEach( function (element, key) {
var text;
if(element.getElement().editAsText){
if(element.isPartial()){
text = element.getElement().editAsText();
text.deleteText(element.getStartOffset(), element.getEndOffsetInclusive());
} else {
doc.appendParagraph(''); // Create empty paragraph since you can't delete last paragraph.
text = element.getElement().removeFromParent();
}
} else {
element.getElement().removeFromParent();
}
});
if(body.getNumChildren() === 1){
paragraph = doc.getBody().appendParagraph('');
position = doc.newPosition(paragraph, 0);
doc.setCursor(position);
} else if(element && !element.getParent() && previousElement){
element = previousElement;
index = element.getParent().getChildIndex(element);
} else if(body.editAsText().getText().length === 0){
paragraph = doc.getBody().appendParagraph('');
position = doc.newPosition(paragraph, 0);
doc.setCursor(position);
} else {
position = doc.newPosition(element, index);
}
if(!position){
paragraph = doc.getBody().appendParagraph('');
position = doc.newPosition(paragraph, 0);
doc.setCursor(position);
}
/* Move position of cursor to the new position */
doc.setCursor(position);
/* Update cursor variable since its now available */
cursor = doc.getCursor();
/* If a placeholder element was created to keep the position, remove it. */
if(fakedElement){
element.removeFromParent();
}
}
}
/* Insert image */
var image = body.appendImage(blob);
cursor.insertInlineImage(image);
image.removeFromParent();
return true;
}
Update #2: Okay, I'm pretty sure my error in update #1 was because of indexing out of bounds over the array (I'm still not used to JS indexing at 0). But here is the new problem... if I write out the different combinations of the loop manually, setting the page index to 1 in moveItem() like so:
newForm.moveItem(itemsArray[0][0], 1);
newForm.moveItem(itemsArray[0][1], 1);
newForm.moveItem(itemsArray[0][2], 1);
newForm.moveItem(itemsArray[1][0], 1);
newForm.moveItem(itemsArray[1][1], 1);
newForm.moveItem(itemsArray[1][2], 1);
newForm.moveItem(itemsArray[2][0], 1);
...
...I don't get any errors but the items end up on different pages! What is going on?
Update #1:: Using Sandy Good's answer as well as a script I found at this WordPress blog, I have managed to get closer to what I needed. I believe Sandy Good misinterpreted what I wanted to do because I wasn't specific enough in my question.
I would like to:
Get all items from a page (section header, images, question etc)
Put them into an array
Do this for all pages, adding these arrays to an array (i.e: [[all items from page 1][all items from page 2][all items from page 3]...])
Shuffle the elements of this array
Repopulate a new form with each element of this array. In this way, page order will be randomized.
My JavaScript skills are poor (this is the first time I've used it). There is a step that produces null entries and I don't know why... I had to remove them manually. I am not able to complete step 5 as I get the following error:
Cannot convert Item,Item,Item to (class).
"Item,Item,Item" is the array element containing all the items from a particular page. So it seems that I can't add three items to a page at a time? Or is something else going on here?
Here is my code:
function shuffleForms() {
var itemsArray,shuffleQuestionsInNewForm,fncGetQuestionID,
newFormFile,newForm,newID,shuffle, sections;
// Copy template form by ID, set a new name
newFormFile = DriveApp.getFileById('1prfcl-RhaD4gn0b2oP4sbcKaRcZT5XoCAQCbLm1PR7I')
.makeCopy();
newFormFile.setName('AAAAA_Shuffled_Form');
// Get ID of new form and open it
newID = newFormFile.getId();
newForm = FormApp.openById(newID);
// Initialize array to put IDs in
itemsArray = [];
function getPageItems(thisPageNum) {
Logger.log("Getting items for page number: " + thisPageNum );
var thisPageItems = []; // Used for result
var thisPageBreakIndex = getPageItem(thisPageNum).getIndex();
Logger.log( "This is index num : " + thisPageBreakIndex );
// Get all items from page
var allItems = newForm.getItems();
thisPageItems.push(allItems[thisPageBreakIndex]);
Logger.log( "Added pagebreak item: " + allItems[thisPageBreakIndex].getIndex() );
for( var i = thisPageBreakIndex+1; ( i < allItems.length ) && ( allItems[i].getType() != FormApp.ItemType.PAGE_BREAK ); ++i ) {
thisPageItems.push(allItems[i]);
Logger.log( "Added non-pagebreak item: " + allItems[i].getIndex() );
}
return thisPageItems;
}
function shuffle(array) {
var currentIndex = array.length, temporaryValue, randomIndex;
Logger.log('shuffle ran')
// While there remain elements to shuffle...
while (0 !== currentIndex) {
// Pick a remaining element...
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex -= 1;
// And swap it with the current element.
temporaryValue = array[currentIndex];
array[currentIndex] = array[randomIndex];
array[randomIndex] = temporaryValue;
}
return array;
}
function shuffleAndMove() {
// Get page items for all pages into an array
for(i = 2; i <= 5; i++) {
itemsArray[i] = getPageItems(i);
}
// Removes null values from array
itemsArray = itemsArray.filter(function(x){return x});
// Shuffle page items
itemsArray = shuffle(itemsArray);
// Move page items to the new form
for(i = 2; i <= 5; ++i) {
newForm.moveItem(itemsArray[i], i);
}
}
shuffleAndMove();
}
Original post: I have used Google forms to create a questionnaire. For my purposes, each question needs to be on a separate page but I need the pages to be randomized. A quick Google search shows this feature has not been added yet.
I see that the Form class in the Google apps script has a number of methods that alter/give access to various properties of Google Forms. Since I do not know Javascript and am not too familiar with Google apps/API I would like to know if what I am trying to do is even possible before diving in and figuring it all out.
If it is possible, I would appreciate any insight on what methods would be relevant for this task just to give me some direction to get started.
Based on comments from Sandy Good and two SE questions found here and here, this is the code I have so far:
// Script to shuffle question in a Google Form when the questions are in separate sections
function shuffleFormSections() {
getQuestionID();
createNewShuffledForm();
}
// Get question IDs
function getQuestionID() {
var form = FormApp.getActiveForm();
var items = form.getItems();
arrayID = [];
for (var i in items) {
arrayID[i] = items[i].getId();
}
// Logger.log(arrayID);
return(arrayID);
}
// Shuffle function
function shuffle(a) {
var j, x, i;
for (i = a.length; i; i--) {
j = Math.floor(Math.random() * i);
x = a[i - 1];
a[i - 1] = a[j];
a[j] = x;
}
}
// Shuffle IDs and create new form with new question order
function createNewShuffledForm() {
shuffle(arrayID);
// Logger.log(arrayID);
var newForm = FormApp.create('Shuffled Form');
for (var i in arrayID) {
arrayID[i].getItemsbyId();
}
}
Try this. There's a few "constants" to be set at the top of the function, check the comments. Form file copying and opening borrowed from Sandy Good's answer, thanks!
// This is the function to run, all the others here are helper functions
// You'll need to set your source file id and your destination file name in the
// constants at the top of this function here.
// It appears that the "Title" page does not count as a page, so you don't need
// to include it in the PAGES_AT_BEGINNING_TO_NOT_SHUFFLE count.
function shuffleFormPages() {
// UPDATE THESE CONSTANTS AS NEEDED
var PAGES_AT_BEGINNING_TO_NOT_SHUFFLE = 2; // preserve X intro pages; shuffle everything after page X
var SOURCE_FILE_ID = 'YOUR_SOURCE_FILE_ID_HERE';
var DESTINATION_FILE_NAME = 'YOUR_DESTINATION_FILE_NAME_HERE';
// Copy template form by ID, set a new name
var newFormFile = DriveApp.getFileById(SOURCE_FILE_ID).makeCopy();
newFormFile.setName(DESTINATION_FILE_NAME);
// Open the duplicated form file as a form
var newForm = FormApp.openById(newFormFile.getId());
var pages = extractPages(newForm);
shuffleEndOfPages(pages, PAGES_AT_BEGINNING_TO_NOT_SHUFFLE);
var shuffledFormItems = flatten(pages);
setFormItems(newForm, shuffledFormItems);
}
// Builds an array of "page" arrays. Each page array starts with a page break
// and continues until the next page break.
function extractPages(form) {
var formItems = form.getItems();
var currentPage = [];
var allPages = [];
formItems.forEach(function(item) {
if (item.getType() == FormApp.ItemType.PAGE_BREAK && currentPage.length > 0) {
// found a page break (and it isn't the first one)
allPages.push(currentPage); // push what we've built for this page onto the output array
currentPage = [item]; // reset the current page to just this most recent item
} else {
currentPage.push(item);
}
});
// We've got the last page dangling, so add it
allPages.push(currentPage);
return allPages;
};
// startIndex is the array index to start shuffling from. E.g. to start
// shuffling on page 5, startIndex should be 4. startIndex could also be thought
// of as the number of pages to keep unshuffled.
// This function has no return value, it just mutates pages
function shuffleEndOfPages(pages, startIndex) {
var currentIndex = pages.length;
// While there remain elements to shuffle...
while (currentIndex > startIndex) {
// Pick an element between startIndex and currentIndex (inclusive)
var randomIndex = Math.floor(Math.random() * (currentIndex - startIndex)) + startIndex;
currentIndex -= 1;
// And swap it with the current element.
var temporaryValue = pages[currentIndex];
pages[currentIndex] = pages[randomIndex];
pages[randomIndex] = temporaryValue;
}
};
// Sourced from elsewhere on SO:
// https://stackoverflow.com/a/15030117/4280232
function flatten(array) {
return array.reduce(
function (flattenedArray, toFlatten) {
return flattenedArray.concat(Array.isArray(toFlatten) ? flatten(toFlatten) : toFlatten);
},
[]
);
};
// No safety checks around items being the same as the form length or whatever.
// This mutates form.
function setFormItems(form, items) {
items.forEach(function(item, index) {
form.moveItem(item, index);
});
};
I tested this code. It created a new Form, and then shuffled the questions in the new Form. It excludes page breaks, images and section headers. You need to provide a source file ID for the original template Form. This function has 3 inner sub-functions. The inner functions are at the top, and they are called at the bottom of the outer function. The arrayOfIDs variable does not need to be returned or passed to another function because it is available in the outer scope.
function shuffleFormSections() {
var arrayOfIDs,shuffleQuestionsInNewForm,fncGetQuestionID,
newFormFile,newForm,newID,items,shuffle;
newFormFile = DriveApp.getFileById('Put the source file ID here')
.makeCopy();
newFormFile.setName('AAAAA_Shuffled_Form');
newID = newFormFile.getId();
newForm = FormApp.openById(newID);
arrayOfIDs = [];
fncGetQuestionID = function() {
var i,L,thisID,thisItem,thisType;
items = newForm.getItems();
L = items.length;
for (i=0;i<L;i++) {
thisItem = items[i];
thisType = thisItem.getType();
if (thisType === FormApp.ItemType.PAGE_BREAK ||
thisType === FormApp.ItemType.SECTION_HEADER ||
thisType === FormApp.ItemType.IMAGE) {
continue;
}
thisID = thisItem.getId();
arrayOfIDs.push(thisID);
}
Logger.log('arrayOfIDs: ' + arrayOfIDs);
//the array arrayOfIDs does not need to be returned since it is available
//in the outermost scope
}// End of fncGetQuestionID function
shuffle = function() {// Shuffle function
var j, x, i;
Logger.log('shuffle ran')
for (i = arrayOfIDs.length; i; i--) {
j = Math.floor(Math.random() * i);
Logger.log('j: ' + j)
x = arrayOfIDs[i - 1];
Logger.log('x: ' + x)
arrayOfIDs[i - 1] = arrayOfIDs[j];
arrayOfIDs[j] = x;
}
Logger.log('arrayOfIDs: ' + arrayOfIDs)
}
shuffleQuestionsInNewForm = function() {
var i,L,thisID,thisItem,thisQuestion,questionType;
L = arrayOfIDs.length;
for (i=0;i<L;i++) {
thisID = arrayOfIDs[i];
Logger.log('thisID: ' + thisID)
thisItem = newForm.getItemById(thisID);
newForm.moveItem(thisItem, i)
}
}
fncGetQuestionID();//Get all the question ID's and put them into an array
shuffle();
shuffleQuestionsInNewForm();
}
My User has the following selection in his Gdoc.
Now from the sidebar he wants to to replace the selection he made on the document. The GAS question is if it is possible to do that at once, something like:
var selection = DocumentApp.getActiveDocument().getSelection()
selection.replace("newtext")
Or do I have to loop through selection.getRangeElements() in order to delete them (or replace them) and than in someway place the new text in that position?
Not, that's not possible (well, if it is, it's not documented).
You have to loop through the selected elements, mainly because the selection may take part of paragraphs, forcing you to manage that. i.e. deleting just the selected part. And for completed selected elements, you can just remove them entirely (like images).
Here's an implementation on how to do this (part of the Kaylan's Translate script modified by me to properly replace images and partially selected paragraphs.
function replaceSelection(newText) {
var selection = DocumentApp.getActiveDocument().getSelection();
if (selection) {
var elements = selection.getRangeElements();
var replace = true;
for (var i = 0; i < elements.length; i++) {
if (elements[i].isPartial()) {
var element = elements[i].getElement().asText();
var startIndex = elements[i].getStartOffset();
var endIndex = elements[i].getEndOffsetInclusive();
var text = element.getText().substring(startIndex, endIndex + 1);
element.deleteText(startIndex, endIndex);
if( replace ) {
element.insertText(startIndex, newText);
replace = false;
}
} else {
var element = elements[i].getElement();
if( replace && element.editAsText ) {
element.clear().asText().setText(newText);
replace = false;
} else {
if( replace && i === elements.length -1 ) {
var parent = element.getParent();
parent[parent.insertText ? 'insertText' : 'insertParagraph'](parent.getChildIndex(element), newText);
replace = false; //not really necessary since it's the last one
}
element.removeFromParent();
}
}
}
} else
throw "Hey, select something so I can replace!";
}
Problem description:
I have a table with three rows. The first row contains a drop down. When a user selects a drop down option, a new row should be generated beneath the current last row. How can I tweak this code to such that a new row is generated only when the user selects a drop down option of the current last row, and not any other row?
JSFiddle: http://jsfiddle.net/JPVUk/13/
var ViewModel = function() {
var self = this;
self.items = ko.observableArray([{comment:'first comment', amount:0}]);
self.addNewItem = function(){
self.items.push(new Item('',0));
};
}
var Item = function(comment, amount) {
var self = this;
self.comment = ko.observable(comment);
self.amount = ko.observable(amount);
};
vm = new ViewModel()
ko.applyBindings(vm);
What I am struggling to do:
So, since I want to bind the change event to the last row, here's how I am approaching it:
<select class="input-small" data-bind="items()[items.length-1] ? event: { change: $root.addNewItem }">
This is however not working. Any ideas folks ?
Can't you just past the row that causes the event to fire to your handler and check it there?
Something like this:
<select class="input-small" data-bind="event: { change: $root.addNewItem }">
And then:
self.addNewItem = function(row){
if (row == self.items()[self.items().length - 1]) {
self.items.push(new Item('',0));
}
};
http://jsfiddle.net/JPVUk/14/
I'm not sure if jQuery was acceptable so this just uses DOM. Basically use the event object passed to knockout. Traverse a little dom and determine is the event target is a child of the last row in the parent table:
var tableRow = event.target.parentNode.parentNode,
body = tableRow.parentNode,
nodes = body.childNodes,
children = [];
for (var i = 0; i < nodes.length; i++) {
// remove non-element node types. ie textNodes, etc.
if (nodes[i].nodeType === 1) {
children.push(nodes[i]);
}
}
if (tableRow === children[children.length - 1]) {
self.items.push(new Item('', 0));
}