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Merged
merged 2 commits into from
Nov 12, 2013
Merged

Update form_collections.rst #3157

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de2aac2
Update form_collections.rst
attardi Nov 5, 2013
bd4abba
Update form_collections.rst
attardi Nov 9, 2013
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22 changes: 12 additions & 10 deletions cookbook/form/form_collections.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -358,27 +358,29 @@ will be show next):

.. code-block:: javascript

// Get the ul that holds the collection of tags
var collectionHolder = $('ul.tags');
var $collectionHolder;

// setup an "add a tag" link
var $addTagLink = $('<a href="#" class="add_tag_link">Add a tag</a>');
var $newLinkLi = $('<li></li>').append($addTagLink);

jQuery(document).ready(function() {
// Get the ul that holds the collection of tags
$collectionHolder = $('ul.tags');

// add the "add a tag" anchor and li to the tags ul
collectionHolder.append($newLinkLi);
$collectionHolder.append($newLinkLi);

// count the current form inputs we have (e.g. 2), use that as the new
// index when inserting a new item (e.g. 2)
collectionHolder.data('index', collectionHolder.find(':input').length);
$collectionHolder.data('index', $collectionHolder.find(':input').length);

$addTagLink.on('click', function(e) {
// prevent the link from creating a "#" on the URL
e.preventDefault();

// add a new tag form (see next code block)
addTagForm(collectionHolder, $newLinkLi);
addTagForm($collectionHolder, $newLinkLi);
});
});

Expand All @@ -393,22 +395,22 @@ one example:

.. code-block:: javascript

function addTagForm(collectionHolder, $newLinkLi) {
function addTagForm($collectionHolder, $newLinkLi) {
// Get the data-prototype explained earlier
var prototype = collectionHolder.data('prototype');
var prototype = $collectionHolder.data('prototype');

// get the new index
var index = collectionHolder.data('index');
var index = $collectionHolder.data('index');

// Replace '$$name$$' in the prototype's HTML to
// instead be a number based on how many items we have
var newForm = prototype.replace(/\$\$name\$\$/g, index);

// increase the index with one for the next item
collectionHolder.data('index', index + 1);
$collectionHolder.data('index', index + 1);

// Display the form in the page in an li, before the "Add a tag" link li
var $newFormLi = $('<li></li>').append(newForm);
var $newFormLi = $('<li></li>').append($newForm);
$newLinkLi.before($newFormLi);
}

Expand Down