adding js to change view with header_lines doesnt work

[jaideepdas]

I am trying to add custom js file to add some jquery functionality but its not working, I have tried:

model.header_lines = [
   '<script src="/js/songs.js"></script>',
   '<style href="/css/songs.css"></style>'
];

and

model.static = ['/js/songs.js']

but none of them works.

Following is my index.js file in models dir. I have copied it from the classic example.

var path = require('path'),
    fs = require('fs'),
    mongoose = require('mongoose'),
    files = fs.readdirSync(__dirname);

files.forEach(function(file) {
    var name = path.basename(file, '.js');
    if (name === 'index')
        return;

    var mod = require('./' + name);
    if (mod.model)
        module.exports[name] = mod;
    else
        module.exports[name] = mongoose.model(name, mod);
});

My app file formage bits:

var formage_options = {user: require('./models').user,
    customer: require('./models').customer,
    social_auth: require('./models').social_auth,
    site_category: require('./models').site_category,
    store_category: require('./models').store_category,
    brand: require('./models').brand,
    bank: require('./models').bank,
    card: require('./models').card,
    store: require('./models').store,
    affiliate: require('./models').affiliate,
    deal_offer: require('./models').deal_offer,
    coupon: require('./models').coupon,
    category_mapping: require('./models').category_mapping,
    cash_back: require('./models').cash_back,
    affiliate_store: require('./models').affiliate_store,
    bank_card: require('./models').bank_card};

formage_options.deal_offer.header_lines = ['<script src="/javascripts/admin/deal_offer.js"></script>'];

    require('formage').init(app, express, formage_options, {
        title: 'Admin',
        root: '/admin',
        default_section: 'main',
        username: 'admin',
        password: 'admin',
        admin_users_gui: true
    });

I want to put some custom js functions for the change form view.