404 Template

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  1. 404 Template Html
  2. 404 Template Free
  3. 404 Template Hierarchy
  4. 404 Template Download

Crowd Source Google Analytics Insights. This solutions gallery contains in-product solutions (such as dashboards, custom reports and segments) to deepen your use of Google Analytics and accelerate your learning curve. Ohh is a responsive 404 mobile website template. It is free and it will definitely be a great asset to your arsenal. This template is given as pure HTML and CSS. This template uses cartoon icons on a light grey background to make it look more friendly.


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Create a route to handle errors in your website.

When a user navigates to a page that doesn't exist on your website, 0:00
they're typically shown an error page, 404 not found. 0:04
This is also a popular area for 0:12
a website to show off their personality and have some fun. 0:14
On our website when you navigate to a page that doesn't exist, 0:19
you get this plain black and white Not Found page. 0:24
It lets the user know what happened, but it's not the most friendly of pages, and 0:29
Instead, let's create our own 404 page to show the user. 0:36
and let's add an @app.errorhandler, 0:46
And let's create a function and let's call it not_found. 0:55
We're going to get an error message when this happens. 1:01
And inside, we're going to return a render_template. 1:06
And we're gonna create this template here in a second 404.html. 1:10
And then here at the end, outside of this render template, 1:18
we're also going to send comma 404 to make sure the browser knows 1:23
Now we need to create the 404 template. 1:31
It should essentially have the same pieces as the beginning of our pet.html. 1:40
So I'm going to copy these out, paste and let me save app.py before I forget. 1:44
Endblock, awesome. 1:57
And then in the teacher's notes flow is actually the code that goes inside of this 2:00
Go ahead and copy and paste it now. 2:06
Okay, open up our website and let's give it a hard refresh. 2:18
I want you to use this page as your guinea pig, if you're up for the challenge. 2:28
scroll all the way to the bottom and start adding your own styles. 2:37
then access them in the CSS file to style the page. 2:45
You can also change out the HTML of the page as well. 2:49
This is a great way to practice your skills. 2:52
Now that we have a 404 page, let's put it to use. 2:55
If a user tries to access a pet that doesn't exist, 2:59
Let's take a look at the docs. 3:07
You can see we can use instead of get, we can use get_or_404. 3:10
So anytime we use get if it doesn't find a pet, 3:16
So let's try that out. 3:23
And let's scroll up, get_or_404. 3:30
And then that is a different one, it's Pet.query.all, 3:42
Okay, now let's test this out in our browser. 3:52
So if we go to Blanca, Blanca is pet two, and we find it. 3:57
If I try to do pet 20, I get the error page, perfect. 4:04
Edit, let's do edit 20, 404 and 4:16
You've learned a lot in this course. 4:27
Check the teacher's notes for some ideas for taking this website further. 4:31
And some ideas for other websites you could create on your own. 4:36
Way to tackle flask was SQLAlchemy basics Python Nice does. 4:40

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The package django.shortcuts collects helper functions and classes that“span” multiple levels of MVC. In other words, these functions/classesintroduce controlled coupling for convenience’s sake.


render(request, template_name, context=None, content_type=None, status=None, using=None

Combines a given template with a given context dictionary and returns anHttpResponse object with that rendered text.

Django does not provide a shortcut function which returns aTemplateResponse because the constructorof TemplateResponse offers the same levelof convenience as render().

Required arguments¶

The request object used to generate this response.
The full name of a template to use or sequence of template names. If asequence is given, the first template that exists will be used. See thetemplate loading documentation for moreinformation on how templates are found.

Optional arguments¶

A dictionary of values to add to the template context. By default, thisis an empty dictionary. If a value in the dictionary is callable, theview will call it just before rendering the template.
The MIME type to use for the resulting document. Defaults to'text/html'.
The status code for the response. Defaults to 200.
The NAME of a template engine to use forloading the template.


The following example renders the template myapp/index.html with theMIME type application/xhtml+xml:

This example is equivalent to:


404 Template Html

redirect(to, *args, permanent=False, **kwargs

Returns an HttpResponseRedirect to the appropriate URLfor the arguments passed.

The arguments could be:

  • A model: the model’s get_absolute_url()function will be called.
  • A view name, possibly with arguments: reverse() will beused to reverse-resolve the name.
  • An absolute or relative URL, which will be used as-is for the redirectlocation.

By default issues a temporary redirect; pass permanent=True to issue apermanent redirect.


You can use the redirect() function in a number of ways.

  1. By passing some object; that object’sget_absolute_url() method will be calledto figure out the redirect URL:

  2. By passing the name of a view and optionally some positional orkeyword arguments; the URL will be reverse resolved using thereverse() method:

  3. By passing a hardcoded URL to redirect to:

    This also works with full URLs:

By default, redirect() returns a temporary redirect. All of the aboveforms accept a permanent argument; if set to True a permanent redirectwill be returned:


get_object_or_404(klass, *args, **kwargs

Calls get() on a given model manager,but it raises Http404 instead of the model’sDoesNotExist exception.

Required arguments¶

A Model class,a Manager,or a QuerySet instance from which to getthe object.
Lookup parameters, which should be in the format accepted by get() andfilter().


The following example gets the object with the primary key of 1 fromMyModel:

404 template hierarchy

This example is equivalent to:

The most common use case is to pass a Model, asshown above. However, you can also pass aQuerySet instance:

The above example is a bit contrived since it’s equivalent to doing:

but it can be useful if you are passed the queryset variable from somewhereelse.

Finally, you can also use a Manager. This is usefulfor example if you have acustom manager:

You can also userelatedmanagers:

Note: As with get(), aMultipleObjectsReturned exceptionwill be raised if more than one object is found.

404 Template Free


get_list_or_404(klass, *args, **kwargs

404 Template Hierarchy

Returns the result of filter() on agiven model manager cast to a list, raising Http404 ifthe resulting list is empty.

Required arguments¶

A Model, Manager orQuerySet instance from which to get thelist.
Lookup parameters, which should be in the format accepted by get() andfilter().


404 Template Download

The following example gets all published objects from MyModel:

This example is equivalent to: