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synchronize code example with 4.3 branch #12479

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Oct 15, 2019
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synchronize code example with 4.3 branch #12479

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7 changes: 4 additions & 3 deletions reference/forms/types/collection.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -145,7 +145,7 @@ you need is this JavaScript code:
// add-collection-widget.js
jQuery(document).ready(function () {
jQuery('.add-another-collection-widget').click(function (e) {
var list = jQuery(jQuery(this).attr('data-list'));
var list = jQuery(jQuery(this).attr('data-list-selector'));
// Try to find the counter of the list or use the length of the list
var counter = list.data('widget-counter') || list.children().length;

Expand Down Expand Up @@ -176,7 +176,8 @@ And update the template as follows:
{# store the prototype on the data-prototype attribute #}
<ul id="email-fields-list"
data-prototype="{{ form_widget(form.emails.vars.prototype)|e }}"
data-widget-tags="{{ '<li></li>'|e }}">
data-widget-tags="{{ '<li></li>'|e }}"
data-widget-counter="{{ form.emails|length }}">
{% for emailField in form.emails %}
<li>
{{ form_errors(emailField) }}
Expand All @@ -187,7 +188,7 @@ And update the template as follows:

<button type="button"
class="add-another-collection-widget"
data-list="#email-fields-list">Add another email</button>
data-list-selector="#email-fields-list">Add another email</button>

{# ... #}
{{ form_end(form) }}
Expand Down