ValueError - Python Django
I went through forums and did some changes in my codes but the problem is still there. I did migrate and makemigrations, and even deleted migrate and recreate it again.
I also added default=0 to the models.py code:
age = models.PositiveIntegerField(default=0)
I'll appreciate you if you help me on this issue.
These are some lines of codes, let me know if you need any other information.
This is the error:
ValueError at /basic_app/create/
invalid literal for int() with base 10: 'create'
Request Method: GET
Request URL: http://127.0.0.1:8000/basic_app/create/
Django Version: 2.1.2
Exception Type: ValueError
Exception Value:
invalid literal for int() with base 10: 'create'
Exception Location: C:ProgramDataMiniconda3envsmyDjanEnvlibsite-packagesdjangodbmodelsfields__init__.py in get_prep_value, line 965
Python Executable: C:ProgramDataMiniconda3envsmyDjanEnvpython.exe
Python Version: 3.7.0
Python Path:
['C:\Users\Administrator\Desktop\django_lecture\djan_advance\advcbv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\python37.zip',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\DLLs',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib',
'C:\ProgramData\Miniconda3\envs\myDjanEnv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib\site-packages']
This is __init__.py file, line 960-965:
def get_prep_value(self, value):
from django.db.models.expressions import OuterRef
value = super().get_prep_value(value)
if value is None or isinstance(value, OuterRef):
return value
return int(value)
The models.py file:
from django.db import models
# Create your models here.
class School(models.Model):
name = models.CharField(max_length=128)
principal = models.CharField(max_length=128)
location = models.CharField(max_length=128)
def __str__(self):
return self.name
class Student(models.Model):
name = models.CharField(max_length=128)
age = models.PositiveIntegerField()
school = models.ForeignKey(School,related_name='students',on_delete=models.PROTECT)
def __str__(self):
return self.name
urls.py file in basic_app folder:
from django.conf.urls import url
from basic_app import views
app_name = 'basic_app'
urlpatterns = [
url(r'^$',views.schoolListView.as_view(),name='list'),
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
url(r'^create/$',views.schoolCreateView.as_view(),name='create')
]
views.py file:
from django.shortcuts import render
from django.views.generic import (View,TemplateView,
ListView,DetailView,
CreateView,UpdateView,
DeleteView)
from . import models
class IndexView(TemplateView):
template_name = 'index.html'
class schoolListView(ListView):
context_object_name = 'schools'
model = models.School
class schoolDetailView(DetailView):
context_object_name = 'school_detail'
model = models.School
template_name = 'basic_app/school_detail.html'
class schoolCreateView(CreateView):
fields = ('name','principal','location')
model = models.School
python django valueerror
add a comment |
I went through forums and did some changes in my codes but the problem is still there. I did migrate and makemigrations, and even deleted migrate and recreate it again.
I also added default=0 to the models.py code:
age = models.PositiveIntegerField(default=0)
I'll appreciate you if you help me on this issue.
These are some lines of codes, let me know if you need any other information.
This is the error:
ValueError at /basic_app/create/
invalid literal for int() with base 10: 'create'
Request Method: GET
Request URL: http://127.0.0.1:8000/basic_app/create/
Django Version: 2.1.2
Exception Type: ValueError
Exception Value:
invalid literal for int() with base 10: 'create'
Exception Location: C:ProgramDataMiniconda3envsmyDjanEnvlibsite-packagesdjangodbmodelsfields__init__.py in get_prep_value, line 965
Python Executable: C:ProgramDataMiniconda3envsmyDjanEnvpython.exe
Python Version: 3.7.0
Python Path:
['C:\Users\Administrator\Desktop\django_lecture\djan_advance\advcbv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\python37.zip',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\DLLs',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib',
'C:\ProgramData\Miniconda3\envs\myDjanEnv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib\site-packages']
This is __init__.py file, line 960-965:
def get_prep_value(self, value):
from django.db.models.expressions import OuterRef
value = super().get_prep_value(value)
if value is None or isinstance(value, OuterRef):
return value
return int(value)
The models.py file:
from django.db import models
# Create your models here.
class School(models.Model):
name = models.CharField(max_length=128)
principal = models.CharField(max_length=128)
location = models.CharField(max_length=128)
def __str__(self):
return self.name
class Student(models.Model):
name = models.CharField(max_length=128)
age = models.PositiveIntegerField()
school = models.ForeignKey(School,related_name='students',on_delete=models.PROTECT)
def __str__(self):
return self.name
urls.py file in basic_app folder:
from django.conf.urls import url
from basic_app import views
app_name = 'basic_app'
urlpatterns = [
url(r'^$',views.schoolListView.as_view(),name='list'),
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
url(r'^create/$',views.schoolCreateView.as_view(),name='create')
]
views.py file:
from django.shortcuts import render
from django.views.generic import (View,TemplateView,
ListView,DetailView,
CreateView,UpdateView,
DeleteView)
from . import models
class IndexView(TemplateView):
template_name = 'index.html'
class schoolListView(ListView):
context_object_name = 'schools'
model = models.School
class schoolDetailView(DetailView):
context_object_name = 'school_detail'
model = models.School
template_name = 'basic_app/school_detail.html'
class schoolCreateView(CreateView):
fields = ('name','principal','location')
model = models.School
python django valueerror
Looks like you are passing the keyword create. You should share your views.py too.
– Anton vBR
Nov 24 '18 at 7:21
Post edited. I added view.py
– sf31
Nov 24 '18 at 7:28
add a comment |
I went through forums and did some changes in my codes but the problem is still there. I did migrate and makemigrations, and even deleted migrate and recreate it again.
I also added default=0 to the models.py code:
age = models.PositiveIntegerField(default=0)
I'll appreciate you if you help me on this issue.
These are some lines of codes, let me know if you need any other information.
This is the error:
ValueError at /basic_app/create/
invalid literal for int() with base 10: 'create'
Request Method: GET
Request URL: http://127.0.0.1:8000/basic_app/create/
Django Version: 2.1.2
Exception Type: ValueError
Exception Value:
invalid literal for int() with base 10: 'create'
Exception Location: C:ProgramDataMiniconda3envsmyDjanEnvlibsite-packagesdjangodbmodelsfields__init__.py in get_prep_value, line 965
Python Executable: C:ProgramDataMiniconda3envsmyDjanEnvpython.exe
Python Version: 3.7.0
Python Path:
['C:\Users\Administrator\Desktop\django_lecture\djan_advance\advcbv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\python37.zip',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\DLLs',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib',
'C:\ProgramData\Miniconda3\envs\myDjanEnv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib\site-packages']
This is __init__.py file, line 960-965:
def get_prep_value(self, value):
from django.db.models.expressions import OuterRef
value = super().get_prep_value(value)
if value is None or isinstance(value, OuterRef):
return value
return int(value)
The models.py file:
from django.db import models
# Create your models here.
class School(models.Model):
name = models.CharField(max_length=128)
principal = models.CharField(max_length=128)
location = models.CharField(max_length=128)
def __str__(self):
return self.name
class Student(models.Model):
name = models.CharField(max_length=128)
age = models.PositiveIntegerField()
school = models.ForeignKey(School,related_name='students',on_delete=models.PROTECT)
def __str__(self):
return self.name
urls.py file in basic_app folder:
from django.conf.urls import url
from basic_app import views
app_name = 'basic_app'
urlpatterns = [
url(r'^$',views.schoolListView.as_view(),name='list'),
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
url(r'^create/$',views.schoolCreateView.as_view(),name='create')
]
views.py file:
from django.shortcuts import render
from django.views.generic import (View,TemplateView,
ListView,DetailView,
CreateView,UpdateView,
DeleteView)
from . import models
class IndexView(TemplateView):
template_name = 'index.html'
class schoolListView(ListView):
context_object_name = 'schools'
model = models.School
class schoolDetailView(DetailView):
context_object_name = 'school_detail'
model = models.School
template_name = 'basic_app/school_detail.html'
class schoolCreateView(CreateView):
fields = ('name','principal','location')
model = models.School
python django valueerror
I went through forums and did some changes in my codes but the problem is still there. I did migrate and makemigrations, and even deleted migrate and recreate it again.
I also added default=0 to the models.py code:
age = models.PositiveIntegerField(default=0)
I'll appreciate you if you help me on this issue.
These are some lines of codes, let me know if you need any other information.
This is the error:
ValueError at /basic_app/create/
invalid literal for int() with base 10: 'create'
Request Method: GET
Request URL: http://127.0.0.1:8000/basic_app/create/
Django Version: 2.1.2
Exception Type: ValueError
Exception Value:
invalid literal for int() with base 10: 'create'
Exception Location: C:ProgramDataMiniconda3envsmyDjanEnvlibsite-packagesdjangodbmodelsfields__init__.py in get_prep_value, line 965
Python Executable: C:ProgramDataMiniconda3envsmyDjanEnvpython.exe
Python Version: 3.7.0
Python Path:
['C:\Users\Administrator\Desktop\django_lecture\djan_advance\advcbv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\python37.zip',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\DLLs',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib',
'C:\ProgramData\Miniconda3\envs\myDjanEnv',
'C:\ProgramData\Miniconda3\envs\myDjanEnv\lib\site-packages']
This is __init__.py file, line 960-965:
def get_prep_value(self, value):
from django.db.models.expressions import OuterRef
value = super().get_prep_value(value)
if value is None or isinstance(value, OuterRef):
return value
return int(value)
The models.py file:
from django.db import models
# Create your models here.
class School(models.Model):
name = models.CharField(max_length=128)
principal = models.CharField(max_length=128)
location = models.CharField(max_length=128)
def __str__(self):
return self.name
class Student(models.Model):
name = models.CharField(max_length=128)
age = models.PositiveIntegerField()
school = models.ForeignKey(School,related_name='students',on_delete=models.PROTECT)
def __str__(self):
return self.name
urls.py file in basic_app folder:
from django.conf.urls import url
from basic_app import views
app_name = 'basic_app'
urlpatterns = [
url(r'^$',views.schoolListView.as_view(),name='list'),
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
url(r'^create/$',views.schoolCreateView.as_view(),name='create')
]
views.py file:
from django.shortcuts import render
from django.views.generic import (View,TemplateView,
ListView,DetailView,
CreateView,UpdateView,
DeleteView)
from . import models
class IndexView(TemplateView):
template_name = 'index.html'
class schoolListView(ListView):
context_object_name = 'schools'
model = models.School
class schoolDetailView(DetailView):
context_object_name = 'school_detail'
model = models.School
template_name = 'basic_app/school_detail.html'
class schoolCreateView(CreateView):
fields = ('name','principal','location')
model = models.School
python django valueerror
python django valueerror
edited Nov 24 '18 at 8:06
eyllanesc
75.4k103156
75.4k103156
asked Nov 24 '18 at 7:19
sf31sf31
204
204
Looks like you are passing the keyword create. You should share your views.py too.
– Anton vBR
Nov 24 '18 at 7:21
Post edited. I added view.py
– sf31
Nov 24 '18 at 7:28
add a comment |
Looks like you are passing the keyword create. You should share your views.py too.
– Anton vBR
Nov 24 '18 at 7:21
Post edited. I added view.py
– sf31
Nov 24 '18 at 7:28
Looks like you are passing the keyword create. You should share your views.py too.
– Anton vBR
Nov 24 '18 at 7:21
Looks like you are passing the keyword create. You should share your views.py too.
– Anton vBR
Nov 24 '18 at 7:21
Post edited. I added view.py
– sf31
Nov 24 '18 at 7:28
Post edited. I added view.py
– sf31
Nov 24 '18 at 7:28
add a comment |
1 Answer
1
active
oldest
votes
The issue is your regex capture for pk
in the detail route in urls.py, specifically this line:
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
I think you meant [-w]
as non alpha characters, but what this searches for is a hyphen (-
) or any alpha, numeric, or underscore character (w
). Thus when you go to the route /basic_app/create/
, 'create'
matches the pattern [-w]+
and is used as the primary key. Since 'create'
is composed of alpha characters and cannot be cast to an integer, you get the error "invalid literal for int() with base 10: 'create'"
.
To fix this, I think you'll want to only match numeric characters for the detail route. You could do something like:
url(r'^(?P<pk>d+)/$',views.schoolDetailView.as_view(),name='detail'),
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53456063%2fvalueerror-python-django%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The issue is your regex capture for pk
in the detail route in urls.py, specifically this line:
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
I think you meant [-w]
as non alpha characters, but what this searches for is a hyphen (-
) or any alpha, numeric, or underscore character (w
). Thus when you go to the route /basic_app/create/
, 'create'
matches the pattern [-w]+
and is used as the primary key. Since 'create'
is composed of alpha characters and cannot be cast to an integer, you get the error "invalid literal for int() with base 10: 'create'"
.
To fix this, I think you'll want to only match numeric characters for the detail route. You could do something like:
url(r'^(?P<pk>d+)/$',views.schoolDetailView.as_view(),name='detail'),
add a comment |
The issue is your regex capture for pk
in the detail route in urls.py, specifically this line:
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
I think you meant [-w]
as non alpha characters, but what this searches for is a hyphen (-
) or any alpha, numeric, or underscore character (w
). Thus when you go to the route /basic_app/create/
, 'create'
matches the pattern [-w]+
and is used as the primary key. Since 'create'
is composed of alpha characters and cannot be cast to an integer, you get the error "invalid literal for int() with base 10: 'create'"
.
To fix this, I think you'll want to only match numeric characters for the detail route. You could do something like:
url(r'^(?P<pk>d+)/$',views.schoolDetailView.as_view(),name='detail'),
add a comment |
The issue is your regex capture for pk
in the detail route in urls.py, specifically this line:
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
I think you meant [-w]
as non alpha characters, but what this searches for is a hyphen (-
) or any alpha, numeric, or underscore character (w
). Thus when you go to the route /basic_app/create/
, 'create'
matches the pattern [-w]+
and is used as the primary key. Since 'create'
is composed of alpha characters and cannot be cast to an integer, you get the error "invalid literal for int() with base 10: 'create'"
.
To fix this, I think you'll want to only match numeric characters for the detail route. You could do something like:
url(r'^(?P<pk>d+)/$',views.schoolDetailView.as_view(),name='detail'),
The issue is your regex capture for pk
in the detail route in urls.py, specifically this line:
url(r'^(?P<pk>[-w]+)/$',views.schoolDetailView.as_view(),name='detail'),
I think you meant [-w]
as non alpha characters, but what this searches for is a hyphen (-
) or any alpha, numeric, or underscore character (w
). Thus when you go to the route /basic_app/create/
, 'create'
matches the pattern [-w]+
and is used as the primary key. Since 'create'
is composed of alpha characters and cannot be cast to an integer, you get the error "invalid literal for int() with base 10: 'create'"
.
To fix this, I think you'll want to only match numeric characters for the detail route. You could do something like:
url(r'^(?P<pk>d+)/$',views.schoolDetailView.as_view(),name='detail'),
edited Nov 24 '18 at 7:57
answered Nov 24 '18 at 7:49
Henry WoodyHenry Woody
3,9942824
3,9942824
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53456063%2fvalueerror-python-django%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Looks like you are passing the keyword create. You should share your views.py too.
– Anton vBR
Nov 24 '18 at 7:21
Post edited. I added view.py
– sf31
Nov 24 '18 at 7:28