I have python and django loaded on my RaspberryPi that is wired to an LED
array. The web app 'iofcontrol' in my Django project is supposed to
activate an animation sequence of a set of LEDs.
- iofppysite is the main project file
- iofppysite/iofcontrol is the LED control web app!
There is a form with 3 radio buttons (Laser 1, Laser 2, Laser 3) and 2
submit buttons (Acquire, Deactivate).
The radio buttons are linked to 1 name/variable, and the submit buttons
have 2 different actions. When you enter the site, you can select only one
"Laser" radio button and click "Acquire". It is supposed to perform an LED
animation based on Laser 1. You click "Deactivate" to turn the LEDs off.
The LED code works by itself but I am having lots of issues with the POST,
redirect, and HttpResponse logic. I can't seem to set it up right.
I have been getting this NoReverseMatch error or I cannot properly process
the POST data. I am new with Django so I have no idea what I'm doing. I
have been combing through tons of tutorials and problem articles but just
can't seem to get it right.
Can someone help me figure this out and make it work for me?? You will
totally make my day!
The error I am getting now is:
NoReverseMatch at / Reverse for 'submit' with arguments '()' and keyword
arguments '{}' not found. 0 pattern(s) tried:[u'$submit'/]
And the following is highlighted in my index file:
<form class="form-mini" method="post" action="{% url 'iofcontrol:submit' %}">
My code is below:
*iofppysite/iofppysite/urls.py*
from django.conf.urls import include, url
from django.contrib import admin
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^', include('iofcontrol.urls', namespace='iofcontrol')),
]
*iofppysite/iofcontrol/urls.py*
from django.conf.urls import url
from . import views
urlpatterns = [
url(r'^', views.index, name='index'),
url(r'^submit/', views.submit, name='submit'),
]
*iofppysite/iofcontrol/index.html - Form portion only*
<form class="form-mini" method="post" action="{% url 'iofcontrol:submit' %}">
{% csrf_token %}
<div class="form-row">
<div class="form-radio-buttons">
<div>
<div>
<label>
<span>Laser type</span>
</label>
<label>
<span>Select one to acquire</span>
</label>
</div>
<div>
<label>
<span>Laser 1</span>
</label>
<label>
<input type="radio" name="laser_id" value="0"
{% if laserAct == 0 %} {{"checked"}}{% endif %}>
</label>
</div>
<div>
<label>
<span>Laser 2</span>
</label>
<label>
<input type="radio" name="laser_id" value="1"
{% if laserAct == 1 %} {{"checked"}}{% endif %}>
</label>
</div>
<div>
<label>
<span>Laser 3</span>
</label>
<label>
<input type="radio" name="laser_id" value="2"
{% if laserAct == 2 %} {{"checked"}}{% endif %}>
</label>
</div>
</div>
</div>
<div class="form-row form-last-row">
<button name="btnSubmit" type="submit"
value="a">Acquire</button>
<button name="btnSubmit" type="submit" value="s">Shutdown</button>
</div>
</form>
iofppysite/iofcontrol/views.py
from django.shortcuts import render
from django.http import HttpResponseRedirect, HttpResponse
from django.core.urlresolvers import reverse
from django.template import loader
from iofled import control
# For debugging purposes, python debugger
import time
import pdb
def index(request):
context = {'led_message : "Index page access"}
print "A request was made: {0}".format(request)
return render(request, 'iofcontrol/index.html', Context(context))
def submit(request, laser_id):
try:
oLED = IoFLED()
btnSubmit = request.POST['btnSubmit']
laserid = request.POST['laser_id']
print "The values of b n l: {0} and {1}".format(btnSubmit,
laserid)
#If acquire was selected
if(btnSubmit == "a" and laserid != False):
oLED.deactivateLEDs()
print "LED deactivated"
oLED.activateLEDWiFi()
print "WiFi activated"
oLED.activateLEDAnim(laserid)
print "Animating LEDs"
context = {
'led_nessage': "Acquiring based on Laser %s" % laserid,
'laserAct': laserid,
}
#If shutdown was selected
elif(btnSubmit == "s"):
oLED.deactivateLEDs()
oLED.activateLEDWiFi()
del oLED
except Exception as e:
if(oLED):
del oLED
context = {
'error_message': "A proper selction was not made. %s"
% e,
}
return render(request,'iofcontrol/index.html', context)
else:
return HttpResponseRedirect(reverse('iofcontrol:index', args =
(context,)))
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