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https://github.com/asyncee/django-easy-select2 issue #52 (hot fix)
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| /** | |
| * issue #52(hot fix) | |
| * the below code is to replace the DomNodeInserted JQuery block code(django-easy-selectv1.5.3/easy-select2.js) with below implementation as it is. | |
| * this implementation is confirmed for issue-52 | |
| * (currently in performance testing to make a production release for this implementation) | |
| */ | |
| // Select the node that will be observed for mutations | |
| var targetNode = document.documentElement || document.body; | |
| // Options for the observer (which mutations to observe) | |
| var config = { attributes: true, childList: true, subtree: true }; | |
| // Callback function to execute when mutations are observed | |
| var callback = function(mutationsList) { | |
| for(var mutation of mutationsList) { | |
| if (mutation.type == 'childList') { | |
| console.log('A child node has been added or removed.'); | |
| console.log(mutation); | |
| if(mutation.addedNodes.length){ | |
| $.each(mutation.addedNodes, function(idx, val){ | |
| var targetClassNames = $(val).attr('class'); // new tr added | |
| if(targetClassNames===undefined | |
| || | |
| (targetClassNames.indexOf('form-row')==-1 && targetClassNames.indexOf('dynamic-')==-1) | |
| ) return; | |
| var $select2Eles = $(mutation.target).find('div.field-easy-select2:not([id*="__prefix__"])'); | |
| if($select2Eles.length) { | |
| $(mutation.target).find('div.field-easy-select2:not([id*="__prefix__"])').each(function () { | |
| // taking data-* for select2 constructor properties for backward compatibility | |
| var obj = $(this).data(); | |
| // merging the options and data properties, modifying the first | |
| // NOTE: obj properties will be overwritten by options | |
| // https://api.jquery.com/jquery.extend/ | |
| $.extend(obj, options); | |
| redisplay_select2($(this), obj); | |
| }); | |
| } else { | |
| $.each(_all_easy_select2_ids, function(idx, val){ | |
| var obj = $("#" + val).data(); | |
| $.extend(obj, options); | |
| $("#" + val).select2('destroy').select2(); | |
| }); | |
| } | |
| }) | |
| } | |
| } | |
| else if (mutation.type == 'attributes') { | |
| console.log('The ' + mutation.attributeName + ' attribute was modified.'); | |
| } | |
| } | |
| }; | |
| // Create an observer instance linked to the callback function | |
| var observer = new MutationObserver(callback); | |
| // Start observing the target node for configured mutations | |
| observer.observe(targetNode, config); |
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