JSON format for jquery-select2 multi with ajax

JSON format for jquery-select2 multi with ajax

I’m thinking in moving from Chosen to Select2 because Select2 has native methods for ajax. Ajax is critical because usualy you have to load a lot of data.
I executed sucessfully the example with the JSON of api.rottentomatoes.com/api/
I did a JSON file to test the ajax, but it didn’t works.
I don’t know how the JSON should be. It seems that there is no detailed documentation:
https://github.com/ivaynberg/select2/issues/920
I tried unsucessfully several JSON formats, so I tried to copy a JSON format similar to api.rottentomatoes but it doesn’t works.
I may be missing something stupid.
function MultiAjaxAutoComplete(element, url) {
$(element).select2({
placeholder: “Search for a movie”,
minimumInputLength: 1,
multiple: true,
ajax: {
url: url,
dataType: ‘jsonp’,
data: function(term, page) {

return {
q: term,
page_limit: 10,
apikey: “z4vbb4bjmgsb7dy33kvux3ea” //my own apikey
};
},
results: function(data, page) {
return {
results: data.movies
};
}
},
formatResult: formatResult,
formatSelection: formatSelection,
/*initSelection: function(element, callback) {
var data = [];
$(element.val().split(“,”)).each(function(i) {
var item = this.split(‘:’);
data.push({
id: item[0],
title: item[1]
});
});
//$(element).val(”);
callback(data);
}*/
});
};

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function formatResult(node) {
return ‘

‘ + node.id + ‘

‘;
};

function formatSelection(node) {
return node.id;
};

/*MultiAjaxAutoComplete(‘#e6’, ‘http://api.rottentomatoes.com/api/public/v1.0/movies.json’);*/

MultiAjaxAutoComplete(‘#e6’, ‘https://raw.github.com/katio/Quick-i18n/master/test.json’);

$(‘#save’).click(function() {
alert($(‘#e6’).val());
});

I did this jsfiddle:
http://jsfiddle.net/Katio/H9RZm/4/

Solutions/Answers:

Solution 1:

If you switched to JSON make sure you switch dataType to JSON from JSONP.

The format is specified here: http://ivaynberg.github.io/select2/#doc-query

The JSON should look like this:

{results: [choice1, choice2, ...], more: true/false }

Basically the only required attribute in the choice is the id. if the option contains other child options (such as in case of optgroup-like choices) then those are specified inside the children attribute.

The default choice and selection renderer expect a text attribute in every choice – that’s what is used to render the choice.

so a complete example of a US state using default renderer might look like this:

{
    "results": [
        {
            "id": "CA",
            "text": "California"
        },
        {
            "id": "CO",
            "text": "Colarado"
        }
    ],
    "more": false
}

Hope this gets you started.

Solution 2:

Official documentation for required JSON format:
ref. https://select2.org/data-sources/formats

{
  "results": [
    {
      "id": 1,
      "text": "Option 1"
    },
    {
      "id": 2,
      "text": "Option 2"
    }
  ],
  "pagination": {
    "more": true
  }
}

References

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