populateInitialValues.html

<script type="text/javascript" nonce="<%=scriptNonce%>">
    Ext4.onReady(function(){
        var webpart = <%=webpartContext%>;

        Ext4.create('Ext.panel.Panel', {
            border: false,
            items: [{
                xtype: 'button',
                text: 'Populate Default Values For Reference Tables',
                handler: function(){
                    Ext4.Msg.wait('Saving...');

                    LABKEY.Ajax.request({
                        url : LABKEY.ActionURL.buildURL('laboratory', 'populateDefaults'),
                        params: {
                            tableNames: ['sample_type', 'species']
                        },
                        method : 'POST',
                        scope: this,
                        failure: LDK.Utils.getErrorCallback(),
                        success: function(result){
                            Ext4.Msg.hide();
                            Ext4.Msg.alert('Success', 'Default Values Populated', function(){
                                window.location = LABKEY.ActionURL.buildURL('project', 'start');
                            }, this);
                        }
                    });
                }
            }]
        }).render(webpart.wrapperDivId);
    });
</script>