How to Retrieve Data from MySQL Database in Django and Display It on HTML Pages

Описание: Learn how to effectively retrieve data from a MySQL database using Django, and present it beautifully on your HTML pages. Follow our easy guide for seamless integration and troubleshooting.
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This video is based on the question https://stackoverflow.com/q/70460488/ asked by the user 'Rutuparna' ( https://stackoverflow.com/u/17680440/ ) and on the answer https://stackoverflow.com/a/70460561/ provided by the user 'C14L' ( https://stackoverflow.com/u/5520354/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Retrieve Data from MySQL Database in Django and Display It on HTML Pages

If you are diving into the world of web development with Django and you want to retrieve data from a MySQL database to display it on your HTML pages, you may encounter a few roadblocks. One common issue is ensuring that your data is fetched and passed correctly from your Django logic to your HTML templates. In this post, we will guide you step-by-step through the process, helping you resolve any issues along the way.

Understanding the Problem

In your setup, you are trying to pull information from a MySQL database using Django models but running into problems with not retrieving data as expected. This not only disrupts the workflow but can also be frustrating when you're just starting out. Let's break down the anatomy of the solution to make it easier to understand.

Step-by-Step Guide to Retrieve and Display Data

1. Create Your Model

Before we can retrieve data, we need to have a proper Django model defined. In your example, you created a Persons model. Make sure models.py is structured correctly:

[[See Video to Reveal this Text or Code Snippet]]

This model corresponds to the persons table in your MySQL database, allowing Django to interact with it.

2. Define the View to Fetch Data

Next, ensure that your view, located in views.py, effectively queries the database and prepares the data for rendering. Your original view code looks like this:

[[See Video to Reveal this Text or Code Snippet]]

3. Remember the Context Key

A key issue you might be facing is in variable naming. You set the data context key as Persons, but when iterating through it in the HTML template, you attempted to use Person. Adjusting this will resolve the issue:

In your HTML page (home.html), ensure you iterate using the correct variable name:

[[See Video to Reveal this Text or Code Snippet]]

4. Rendering the Template

When you have corrected the key in your for loop from Person to Persons, Django will properly render the last names of each person in your data set. Ensure that your template is structured to include necessary HTML elements for display.

Conclusion

After applying the above adjustments, you should now be able to successfully retrieve data from your MySQL database and display it on your HTML page with Django. Take note of the context variable names and ensure consistency across your views and templates. Debugging in web development often involves looking closely at such small details, so meticulousness will serve you well.

If you face any other issues, do not hesitate to seek further assistance. Happy coding!