Gain insights into Django, a Python framework for rapid web development. Discover hands-on learning with interactive widgets and build a portfolio-worthy Django project.

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Django

Project

Models

ProjectModels

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ProjectModels-challenge 2

Django is a free and open-source web application framework written in Python. It is used for rapid web development and clean, pragmatic design. It is built by experienced developers to make repetitive tasks easier, so you can focus on writing apps instead of reinventing the wheel. This course teaches Django for beginning and intermediate level learners. The course includes a hands-on learning experience with the help of interactive widgets. At the end of the course, you will have created a project in Django that can be used in your portfolio.

Django: Python Web Development Unleashed

## What are relative URLs?

Traditionally, when we use an anchor tag with an `href`, we have to pass in the hardcoded path to the file. However, this method is not suitable if we want our Django project to work on any system. So let's see how to replace a hardcoded URL path in an `href` with a URL template.

## Using the `url` tag 

The best way to replace a hardcoded URL path in a Django template is to use the `url` tag. The syntax for the `url` tag is as follows:
```html
{% url 'some-url-name' arg1=v1 arg2=v2 %}
```
For example, if we had the following URL before:

```html
<a href= "/profile/12" >Profile</a>
```
The `path` defined for this URL in the project’s `urls.py` is the following:
```python3
path('/profile/<int:id>', views.profile, name='show-profile')
```
Then, after modification it will become: 
```html
<a href = "{% url 'show-profile' id=12 %}">Profile</a>
``` 
As we can see from the example above, we use the `name` parameter defined in `path` to refer to the URL in the `url` tag. Additionally, the `id` parameter is passed in the `url` tag.

Let’s discuss another example, where we want to reference the path of a specific application. This can easily be done by adding the application name, followed by a colon, before the `name` parameter. Take a look at the following URL:

```
{% url 'my_app:index' %}
```
In this example, `my_app` is the name of our application and `home` is the **name** of the path that we have set in the application’s `urls.py`.

Let's understand this more clearly by seeing all the steps involved in it:


### Step 1: Set the variable `app_name`

In this step, we have to go inside the `urls.py` file and add in the variable `app_name`, and then set the variable equal to the string that is the same name as our application name. We will add the following line in our `zing_it/urls.py` application:

```
app_name = 'zing_it'
```
 
### Step 2: Use the `name` of the path

In this step, we basically use the `name` of the path that we specified. For example, if we have a URL by the name of `search` in our `zing_it` application, we would write the following:


```
<a href= "{% url 'zing_it:search' %}">Search Page</a>
```

In this example, `zing_it` is the name of our application and `search` is the **name** of our `search` URL defined in the `zing_it/urls.py` file.

# What are relative URLs?

Traditionally, when we use an anchor tag with an `href`, we have to pass in the hardcoded path to the file. However, this method is not suitable if we want our Django project to work on any system. So let's see how to replace a hardcoded URL path in an `href` with a URL template.

# Using the `url` tag 

The best way to replace a hardcoded URL path in a Django template is to use the `url` tag. The syntax for the `url` tag is as follows:
```html
{% url 'some-url-name' arg1=v1 arg2=v2 %}
```
For example, if we had the following URL before:

```html
<a href= "/profile/12" >Profile</a>
```
The `path` defined for this URL in the project’s `urls.py` is the following:
```python3
path('/profile/<int:id>', views.profile, name='show-profile')
```
Then, after modification it will become: 
```html
<a href = "{% url 'show-profile' id=12 %}">Profile</a>
``` 
As we can see from the example above, we use the `name` parameter defined in `path` to refer to the URL in the `url` tag. Additionally, the `id` parameter is passed in the `url` tag.

Let’s discuss another example, where we want to reference the path of a specific application. This can easily be done by adding the application name, followed by a colon, before the `name` parameter. Take a look at the following URL:

```
{% url 'my_app:index' %}
```
In this example, `my_app` is the name of our application and `home` is the **name** of the path that we have set in the application’s `urls.py`.

Let's understand this more clearly by seeing all the steps involved in it:


## Step 1: Set the variable `app_name`

In this step, we have to go inside the `urls.py` file and add in the variable `app_name`, and then set the variable equal to the string that is the same name as our application name. We will add the following line in our `zing_it/urls.py` application:

```
app_name = 'zing_it'
```
 
## Step 2: Use the `name` of the path

In this step, we basically use the `name` of the path that we specified. For example, if we have a URL by the name of `search` in our `zing_it` application, we would write the following:


```
<a href= "{% url 'zing_it:search' %}">Search Page</a>
```

In this example, `zing_it` is the name of our application and `search` is the **name** of our `search` URL defined in the `zing_it/urls.py` file.

Let's discuss how to use template tagging to create relative URLs.

Before Getting Started

Introduction to Django

First Django Application

Templates in Django

Static Files in Django

Laying Ground for Songs Playlist Application

Project Solution: Laying Grounds for Songs Playlist Application

Django Models

Django Forms

Operations on Models

Take Your Playlist to the Next Level

Project Solution: Take Your Playlist to the Next Level

Conclusion

Creating an E-learning Website Using Django

Relative URLs

What are relative URLs?

Using the `url` tag