change value form after press button (django) - html

Question

I have a form where when I select my option and press the "Select" button I need to update the form with the data of my selected object. My problem is that when I do my static object the {% for%} already marks me an error because it is not a list. I do not know if this is the correct way to do it.
This is running Mysql, django 1.11 and python 2.7.15
views.py
def administrador(request):
alumno = Alumnos.objects.all()
mapa = mapas.objects.all()
competencias = Competencias.objects.all()
context = {
'alumno': alumno,
'mapa': mapa,
'competencias': competencias
}
return render(request, 'competencias_app/competencias.html', context)
def seleccion(request):
alumno = Alumnos.objects.get(pk=request.POST['Nombre'])
context = {'alumno': alumno}
return render(request, 'competencias_app/competencias.html', context)
competencias.html
<form action="/seleccion" method="POST">
{% csrf_token %}
<div>
<select id="carrera" name="Carrera">
<option value="1">TICS</option>
<option value="2">Carrera</option>
<option value="3">Carrera</option>
<option value="4">Carrera</option>
<option value="5">Carrera</option>
</select>
</div>
<div>
<select id="Alumno" name="Nombre">
{% for alumno in alumno %}
<option value="{{alumno.idAlumnos}}">{{alumno.nombre}}</option>
{% endfor %}
<input type="submit" name="Seleccionar">
</select>
</div>
<label for="ID">ID</label>
<input type="input" name="id" disabled value="{{alumno.idAlumnos}}"><br>
<label for="apellidos">Apellidos</label>
<input type="input" name="apellidos" disabled value="{{alumno.apellidos}}"><br>
<label for="Correo">Correo</label>
<input type="input" name="Correo" disabled value="{{alumno.correo}}"><br>
</form>
the output when press "seleccionar" is
Request Method: POST
Request URL: http://localhost:8000/seleccion
Django Version: 1.11.21
Exception Type: TypeError
Exception Value:
'Alumnos' object is not iterable
Images for more details

Answer 1

I solve my problem with one if, i don't know if is the correct solution but works!
competencias.html
<form action="/seleccion" method="POST">
{% csrf_token %}
<div>
<select id="carrera" name="Carrera">
<option value="1">TICS</option>
<option value="2">Carrera</option>
<option value="3">Carrera</option>
<option value="4">Carrera</option>
<option value="5">Carrera</option>
</select>
</div>
<div>
<select id="Alumno" name="Nombre">
{% if alumno|length > 1 %}
{% for alumno in alumno %}
<option value="{{alumno.idAlumnos}}">{{alumno.nombre}}</option>
{% endfor %}
{% else %}
<option value="{{alumno.idAlumnos}}">{{alumno.nombre}}</option>
{%endif%}
<input type="submit" name="Seleccionar">
</select>
</div>
<label for="ID">ID</label>
<input type="input" name="id" disabled value="{{alumno.idAlumnos}}"><br>
<label for="apellidos">Apellidos</label>
<input type="input" name="apellidos" disabled value="{{alumno.apellidos}}"><br>
<label for="Correo">Correo</label>
<input type="input" name="Correo" disabled value="{{alumno.correo}}"><br>
</form>
views.py
def administrador(request):
alumno = Alumnos.objects.all()
mapa = mapas.objects.all()
context = {
'alumno': alumno
}
return render(request, 'competencias_app/competencias.html', context)
def seleccion(request):
lstCompetencias = []
alumno = Alumnos.objects.get(pk=request.POST['Nombre'])
for p in Competencias.objects.raw('Select * from test_app_competencias where idmapasfk_id = %s', [request.POST['Nombre']]):
lstCompetencias.append(p)
context = {
'alumno' : alumno,
'competencias' : lstCompetencias
}
return render(request, 'competencias_app/competencias.html', context)