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Libra2880
Asked: 2020-02-27 08:47:29 +0800 CST 2020-02-27 08:47:29 +0800 CST

How can I fix the operation on multiply inside a Datatable in primefaces?

  • 772

Good morning, I have a problem with primefacesdatatable when performing the operation of multiplying the price field with the quantity field where the total is not the corresponding one and the total amount is:

enter image description here

I leave you the code or what I'm failing:

public void agregar() {
    totalpedido=0;
    subtotalpedido=0;

    DetallePedido det=new DetallePedido();
    Medicamentos medi=new Medicamentos();
    det.setCantidaddetallepedido(cantidad);
    det.setTotalpedido(totalpedido);
    det.setMedicamentos(medicamentos);
    this.lista.add(det);
    for(DetallePedido det1 : lista) {
        //   medi.setPreciocosto(cantidad);
        det1.setSubtotalpedido(subtotalpedido);
        subtotalpedido = det1.getMedicamentos().getPreciocosto()*det1.getCantidaddetallepedido();
    totalpedido += det1.getMedicamentos().getPreciocosto()*det1.getCantidaddetallepedido();
    }
}



   <p:dataTable id="detalle" value="#{pedidoBean.lista}"    var="det"  paginator="true" paginatorTemplate="{CurrentPageReport}  {FirstPageLink}  {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
                     rowsPerPageTemplate="5,10,15">

                    <p:column headerText="Proveedor">
                        #{det.medicamentos.proveedor.nomproveedor}
                    </p:column>

                    <p:column headerText="Nombre Producto">
                        #{det.medicamentos.nommedicamento}
                    </p:column>

                    <p:column headerText="Precio">
                        #{det.medicamentos.preciocosto}
                    </p:column>

                    <p:column headerText="Cantidad">
                        #{det.cantidaddetallepedido}
                    </p:column>
                   <p:column headerText="Total">
                        #{pedidoBean.subtotalpedido}
                    </p:column>

                    <p:columnGroup type="footer">
                      <p:row>
                        <p:column colspan="4" style="text-align:right" footerText="Monto Total:" />
                        <p:column footerText="$#{pedidoBean.totalpedido}" />

                      </p:row>
                    </p:columnGroup>

                </p:dataTable>
jsf

3 Answers

  1. Best Answer

    The problem is that you are using the subtotal field you have defined in the bean when you should be using the subtotal field defined in each object you use as a row. The problematic code is this:

    <p:column headerText="Total">
    #{pedidoBean.subtotalpedido}
</p:column>

    To solve it, you should change the code to this way:

    <p:column headerText="Total">
    #{det.subtotalpedido}
</p:column>

    You must also change the subtotal assignment order:

    for(DetallePedido det1 : lista) {
    subtotalpedido = det1.getMedicamentos().getPreciocosto()*det1.getCantidaddetallepedido();
    //la asignación debe ser luego del cálculo
    det1.setSubtotalpedido(subtotalpedido);
totalpedido += det1.getMedicamentos().getPreciocosto()*det1.getCantidaddetallepedido();
}
    • 0

  2. In the column with the header "Total" you should do the multiplication, like so:

    <p:column headerText="Total">
    #{det.medicamentos.preciocosto * det.cantidaddetallepedido}
</p:column>

    Greetings.

    • 0

  3. The easiest way to do this is to modify your OrderDetail class and perform the multiplication inside the getSubtotalorder. thus.

    public float getSubtotalpedido()
{
this.getPreciocosto()*this.getCantidaddetallepedido();
}
    • 0