// Template
{{> wizard id="product" steps=steps stepsTemplate="steps_bootstrap3" clearOnDestroy=true}}

<template name="productGeneralStep">
    {{#autoForm id="productGeneralStep" schema=step.schema doc=step.data}}
     .........
<template name="productLaonAmountStep">
    {{#autoForm id="productLaonAmountStep" schema=step.schema doc=step.data}}
    .........

// JS
insertTpl.helpers({
    steps: function () {
       // Set initial data to update
        var initialData = Loan.Collection.Product.findOne(this._id);

        return [
            {
                id: 'general',
                title: 'General',
                template: 'productGeneralStep',
                formId: 'productGeneralStep',
                schema: Schema.Product.general,
                data: initialData
            },
            {
                id: 'loanAmount',
                title: 'Loan Amount',
                template: 'productLoanAmountStep',
                formId: 'productLoanAmountStep',
                schema: Schema.Product.loanAmount,
                data: initialData
                onSubmit: function (data, wizard) {
                    var self = this;
                    var extend = _.extend(wizard.mergedData(), data);

                    console.log(self);
                    console.log(extend);

                        Meteor.call('loan_productUpdate', this.docId, extend, function (error, result) {
                            if (error) {
                                alertify.error(error.message);
                            } else {
                                wizard.clearData();
                                alertify.success('Success');
                            }
                        });
                }
            }
        ];
    }
});