nk20/templates/treasury/billing_form.html

{% extends "base.html" %}
{% load static %}
{% load i18n %}
{% load crispy_forms_tags pretty_money %}
{% block content %}
    <p><a class="btn btn-default" href="{% url 'treasury:billing' %}">{% trans "Billings list" %}</a></p>
    <form method="post" action="">
        {% csrf_token %}
        {% crispy form %}
        {{ formset.management_form }}
        <table class="table table-condensed table-striped">
        {% for form in formset %}
            {% if forloop.first %}
                <thead><tr>
                    <th>{{ form.designation.label }}<span class="asteriskField">*</span></th>
                    <th>{{ form.quantity.label }}<span class="asteriskField">*</span></th>
                    <th>{{ form.amount.label }}<span class="asteriskField">*</span></th>
                </tr></thead>
                <tbody id="form_body" >
            {% endif %}
                  <tr class="row-formset">
                    <td>{{ form.designation }}</td>
                    <td>{{ form.quantity }} </td>
                    <td>
                        <div class="input-group">
                            <input type="number" name="product_set-{{ forloop.counter0 }}-amount" min="0" step="0.01"
                                   id="id_product_set-{{ forloop.counter0 }}-amount"
                                   value="{{ form.instance.amount|cents_to_euros }}">
                            <div class="input-group-append">
                                <span class="input-group-text">€</span>
                            </div>
                        </div>
                    </td>
                    {{ form.billing }}
                    {{ form.id }}
                 </tr>
        {% endfor %}
        </tbody>
        </table>

        <div class="btn-group btn-block" role="group">
            <button type="button" id="add_more" class="btn btn-primary">{% trans "Add product" %}</button>
            <button type="button" id="remove_one" class="btn btn-danger">{% trans "Remove product" %}</button>
        </div>

        <div class="btn-block">
            <button type="submit" class="btn btn-block btn-primary">{% trans "Submit" %}</button>
        </div>
    </form>

    <div id="empty_form" style="display: none;">
        <table class='no_error'>
            <tbody id="for_real">
                <tr class="row-formset">
                    <td>{{ formset.empty_form.designation }}</td>
                    <td>{{ formset.empty_form.quantity }} </td>
                    <td>
                        <div class="input-group">
                            <input type="number" name="product_set-__prefix__-amount" min="0" step="0.01"
                                   id="id_product_set-__prefix__-amount">
                            <div class="input-group-append">
                                <span class="input-group-text">€</span>
                            </div>
                        </div>
                    </td>
                    {{ formset.empty_form.billing }}
                    {{ formset.empty_form.id }}
                </tr>
            </tbody>
        </table>
    </div>
{% endblock %}

{% block extrajavascript %}
    <script src="{% static 'js/dynamic-formset.js' %}"></script>
    <script>
        IDS = {};

        $("#id_product_set-TOTAL_FORMS").val($(".row-formset").length - 1);

        $('#add_more').click(function() {
            var form_idx = $('#id_product_set-TOTAL_FORMS').val();
            $('#form_body').append($('#for_real').html().replace(/__prefix__/g, form_idx));
            $('#id_product_set-TOTAL_FORMS').val(parseInt(form_idx) + 1);
            $('#id_product_set-' + parseInt(form_idx) + '-id').val(IDS[parseInt(form_idx)]);
        });

        $('#remove_one').click(function() {
            let form_idx = $('#id_product_set-TOTAL_FORMS').val();
            if (form_idx > 0) {
                IDS[parseInt(form_idx) - 1] = $('#id_product_set-' + (parseInt(form_idx) - 1) + '-id').val();
                $('#form_body tr:last-child').remove();
                $('#id_product_set-TOTAL_FORMS').val(parseInt(form_idx) - 1);
            }
        });
    </script>
{% endblock %}