Implementing Module system in Open-Event

We had to implement the following modules in our system

  • Ticketing
  • Payments
  • Donations

However we wanted the super admin to enable or disable the modules. Hence we implemented the module system so that all three of them can be switched ON/OFF. The following screenshot will help understand better:

modules

So basically we have switches for all three modules. If ticketing is enabled only then can we see the payment and donations system because those two are part of the ticketing system. I created a module database table for storing the values in the database. To store the switch states I implemented the following javascript code:

<script type="text/javascript">

    var modulesForm = [{}];

    Array.prototype.setIncluded = function (field, state) {
        this[0][field].include = state ? 1 : 0;
    };


    function includeClick(button) {
        var $row = $(button).closest("tr");
        var $button = $(button);

        if ($button.data('group') == 'modules') {
            modulesForm.setIncluded($row.data('identifier'), button.checked);
        }
        persistData();
    }

    $(function () {
        $.each($(".modules-options-table").find('tr[data-identifier]'), function (key, row) {
            var $row = $(row);
            modulesForm[0][$row.data('identifier')] = {
                include: $row.find('.include-switch')[0].checked ? 1 : 0
            }
        });

        $('[data-toggle="tooltip"]').tooltip();

        persistData();
    });

    function persistData() {
        $("#modules-value-form").attr('value', JSON.stringify(modulesForm[0]));
    }


</script>

If a module is enabled i.e. if the module is included then the corresponding “include switch” is “checked” and then added to the modulesForm dict. In same way each value of the switch is added. Thus the dict will contain values for each switch/ module in the form:

[{ticketing:include:1},{payments:include:1},{donations:include:0}]

Now the only thing left to do is to iterate through the list and check if the module is included or not. Here is the code which does it:

class SuperAdminModulesView(SuperAdminBaseView):

    @expose('/')
    def index_view(self):
        module = DataGetter.get_module()
        include_settings = []

        if module:
            if module.ticket_include:
                include_settings.append('ticketing')
            if module.payment_include:
                include_settings.append('payments')
            if module.donation_include:
                include_settings.append('donations')

        return self.render('/gentelella/admin/super_admin/modules/modules.html', include_settings=include_settings)

    @expose('/save', methods=['GET', 'POST'])
    def modules_save_view(self):
        create_modules(request.form)

        include_settings = []
        settings = request.form.getlist('modules_form[value]')

        if settings[0][24] == '1':
            include_settings.append('ticketing')
        if settings[0][49] == '1':
            include_settings.append('payments')
        if settings[0][75] == '1':
            include_settings.append('donations')

        return self.render('/gentelella/admin/super_admin/modules/modules.html', include_settings=include_settings)

“settings” is the dict which we get from the modules page. “settings[0][24]” refers to the include value of ticketing, “settings[0][49]” refers to the include value of payments and the next for donations. Thus depending on whether it is 1 or 0 we add strings ‘ticketing’, ‘payments’ and ‘donations’ to the included_settings. Similarly the create_modules(form) adds the values to the database to store it.

def create_modules(form):
    modules_form_value = form.getlist('modules_form[value]')
    module = DataGetter.get_module()

    if module is None:
        module = Module()

    if str(modules_form_value[0][24]) == '1':
        module.ticket_include = True
    else:
        module.ticket_include = False

    if str(modules_form_value[0][49]) == '1':
        module.payment_include = True
    else:
        module.payment_include = False

    if str(modules_form_value[0][75]) == '1':
        module.donation_include = True
    else:
        module.donation_include = False

    save_to_db(module, "Module settings saved")
    events = DataGetter.get_all_events()

    if module.ticket_include:
        for event in events:
            event.ticket_include = True
            save_to_db(event, "Event updated")

 

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