I have a long process that I managed to stream into a Jinja template, but now I would like to show not only results but also that could be viewed by the user as a meaning of progress.
This is my current code: it iterates over a huge collection of items, some of which produce results and others do not. I only want to show the items that match the search.
The rendering part:
lista_pantallas = buscar_componente_stream_generate(componente, atributo, valor)
return Response(stream_template('consultas/busqueda_comp.html',
lista_pantallas=lista_pantallas,
componente=componente, atributo=atributo, valor=valor,
error_msg=err_msg))
This is the way I generate the iterator:
def buscar_componente_stream_generate(componente, atributo, valor):
with uopy.connect(...) as session:
with uopy.File(...) as fapant:
pantallas_fmpant = uopy.List()
pantallas_fmpant.select(fapant)
functor = BuscadorObjetoAtributo(componente, atributo, valor)
for idx, pantalla in enumerate(pantallas_fmpant):
try:
if print_pant:
print(f'{idx} - Pantalla: {pantalla}')
procesar_pantalla(pantalla, functor)
for item in functor.lista_objetos():
yield item
functor.borrar_objetos()
except Exception as ex:
print('{0} - {1} - {2}'.format(idx, pantalla, str(ex)))
And the Jinja2 template
{% if lista_pantallas %}
<h1>Lista de pantallas</h1>
<h2>Condición: {{ componente }}.{{ atributo }} = {{ valor }}</h2>
<h2>Ultima pantalla procesada: {{idx}} - {{pantalla}}</h2>
<table>
<thead>
<th>Pantalla</th>
<th>Atributo</th>
</thead>
<tbody>
{% for item in lista_pantallas %}
{% if loop.index0 is even() %}
{% set par_css = 'par' %}
{% else %}
{% set par_css = 'impar' %}
{% endif %}
<tr class={{ par_css }}>
<td>{{ item['fichero'] }}</td>
<td>{{ item['prop'] }}</td>
</tr>
{% endfor %}
</tbody>
</table>
{% endif %}
How can I refresh the template with the values of the variables idx and pantalla?