re2o/cotisations/templates/cotisations/new_facture.html

{% extends "cotisations/sidebar.html" %}
{% load bootstrap3 %}
{% load staticfiles%}

{% block title %}Création et modification de factures{% endblock %}

{% block content %}
{% bootstrap_form_errors factureform %}

<form class="form" method="post">
    {% csrf_token %}
    <h3>Nouvelle facture</h3>
    {% bootstrap_form factureform %}
    {{ venteform.management_form }}
    <h3>Articles de la facture</h3>
    <div id="form_set">
    {% for form in venteform.forms %}
        <div class='product_to_sell'>
        <p>
            {{ form.as_table }}
        </p>
        </div>
    {% endfor %}
    </div>
    <p>
    <input class="btn btn-primary btn-sm" role="button" value="Ajouter un article" id="add_one">
    </p>
    <p>
        Prix total : <span id="total_price">0,00</span> €
    </p>
    {% bootstrap_button "Créer ou modifier" button_type="submit" icon="star" %}
</form>

<script type="text/javascript">

    // id from database from checks
    var CHECK_ID = 2;

    var prices = {} 
    {% for article in articlelist %}
        prices[{{ article.id|escapejs }}] = {{ article.prix }};
    {% endfor %}

    var template = `<p>{{ venteform.empty_form.as_table }}</p>`;

    function add_article(){
        // Index start at 0 => new_index = number of items
        var new_index =
            document.getElementsByClassName('product_to_sell').length;
        document.getElementById('id_form-TOTAL_FORMS').value =
            parseInt(document.getElementById('id_form-TOTAL_FORMS').value) + 1;
        var new_article = document.createElement('div');
        new_article.className = 'product_to_sell';
        new_article.innerHTML = template.replace(/__prefix__/g, new_index);
        document.getElementById('form_set')
            .appendChild(new_article);
        add_listenner_for_id(new_index);
    }

    function update_price(){
        var price = 0;
        var product_count =
            document.getElementsByClassName('product_to_sell').length;
        var article, article_price, quantity;
        for (i = 0; i < product_count; ++i){
            article = document.getElementById(
                'id_form-' + i.toString() + '-article').value;
            if (article == '') {
                continue;
            }
            article_price = prices[article];
            quantity = document.getElementById(
                'id_form-' + i.toString() + '-quantity').value;
            price += article_price * quantity;
        }
        document.getElementById('total_price').innerHTML =
            price.toFixed(2).toString().replace('.', ',');
    }

    function add_listenner_for_id(i){
        document.getElementById('id_form-' + i.toString() + '-article')
            .addEventListener("change", update_price, true);
        document.getElementById('id_form-' + i.toString() + '-article')
            .addEventListener("onkeypress", update_price, true);
        document.getElementById('id_form-' + i.toString() + '-quantity')
            .addEventListener("change", update_price, true);
    }

    function set_cheque_info_visibility(){
        // May break in various ways...
        // Requires CHECK_ID to be the right one
        // and fields to hide to be 2nd and 3rd elements with class form-group
        var visible = document.getElementById("id_paiement").value == CHECK_ID;
        var display = 'none';
        if (visible) {
            display = 'block';
        }
        var elements = document.getElementsByClassName('form-group');
        elements[1].style.display = display;
        elements[2].style.display = display;
    }

    // Add events manager when DOM is fully loaded
    document.addEventListener("DOMContentLoaded", function() {
        document.getElementById("add_one")
            .addEventListener("click", add_article, true);
        var product_count =
            document.getElementsByClassName('product_to_sell').length;
        for (i = 0; i < product_count; ++i){
            add_listenner_for_id(i);
        }
        document.getElementById("id_paiement")
            .addEventListener("change", set_cheque_info_visibility, true);
        set_cheque_info_visibility();
        update_price();
    });

</script>

{% endblock %}