оо.js

contentDistrictChooseMul: function(data_attr, collection, template) {

        with(this.datafields(data_attr)) {
            events[clickData] = function(e) {
                let oldVal = e.target.innerText.split(',');

                let arr = [];
                for (var i = 0; i < oldVal.length; i++) {
                    let id = Districts.findOne({ name: oldVal[i] })._id;
                    arr.push(oldVal[i])
                }

                let _id = this._id;


                if (districtArr.length === 0) {
                    districtArr.push(Districts.find().map(function(it) {
                        return {
                            id: it._id,
                            text: it.name
                        }
                    }));
                };
                districtArr = _.flatten(districtArr);
                // e.target.textContent = '';

                let view = Blaze.renderWithData(Template.selectMul, Template.selectMul.helpers({
                        options: function() {
                            return districtArr
                        },
                        selected: function() {
                            return arr.indexOf(this.text) > -1 ? 'selected': '';
                        }
                    }),


                    $(e.target).parent()[0]
                );
                select = $(e.target).parent().find('select');

                $(select).chosen({
                    width: '50%'
                }).chosen('open');


                $(select).blur(function(e) {
                    let self = this;
                    // newVal = e.target.find("option:selected").map(function(index, elem) {
                    //     return elem.innerText;
                    // });
                    console.log(e);
                    console.log(newVal);

                    // newValDB = $(this).chosen('data')[0].id;
                    
                    $('.select').chosen('destroy');
                    Blaze.remove(view);
                    if (oldVal !== newVal) {
                        collection.findAndModify({
                            query: { _id: _id },
                            update: { $set: { district_id: newValDB } },
                            new: false
                        });
                        districtArr = []
                        $.notify({
                            title: "Изменения в базе данных:  ",
                            message: `район: ${newVal}`
                        }, _notifyMethods.success)
                    } else {
                        $.notify({
                                title: "База данных:  ",
                                message: "без изменений"
                            },
                            _notifyMethods.default)
                        e.target.textContent = oldVal;
                        districtArr = []
                    }
                });
                $('.chzn-choices').on('blur', function(e) {
                    console.log('dasdsad');
                    $(e.target).parent().find('select').chosen('destroy');
                    Blaze.remove(view);
                    e.target.textContent = oldVal;
                    districtArr = []
                });
            }
            template.events(events);
        }
    },