Скачать или смотреть Solving the Problem of Adding Global Portions to Eloquent Query Results in Laravel

Learn how to seamlessly integrate global portions into Eloquent query results in Laravel without duplicating records in your database.
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Mastering Eloquent: Adding Global Portions in Laravel Queries

Managing food portions can be tricky, especially when you want to avoid duplication in your database. If you’re using Laravel and need to add some global portion records each time you retrieve data from your food_portion table, you're in the right place. This guide will guide you through a streamlined solution to enhance your Eloquent queries without cluttering your database with redundant entries.

The Issue at Hand

You have a food_portion database table that stores various food portions like slices, pies, and waffles. However, you’re missing global portion types such as grams and ounces that are applicable for all food entries. Instead of adding thousands of redundant records for each food item, you want to include these global portions dynamically whenever you query the table.

Current Table Structure

Here’s a simplified view of your food_portion table:

idfood_idnamegram_weight1102030slice1832102030pie1833102031waffle35And here are the global portions you want to add:

gr with a weight of 1 (6000 records like this)

oz with a weight of 28 (6000 records like this)

A Clean Solution: Utilizing Global Scopes

To avoid record repetition while still including these global portions in queries, we can utilize Laravel’s global scopes. Here’s how you can achieve that.

Step-by-Step Implementation

Defining the Global Scope:
You need to modify your model (in this case, FoodPortion) to add a global scope that will append the required global portions to your query results.

Code Example:
Here's how you can implement the global scope in your FoodPortion model:

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

Additional Notes:

If you are using Laravel 6.x, you should replace booted with boot and include parent::boot(); before adding the global scope call to ensure existing functionality continues correctly.

The union method effectively appends the global records to the query results without physically inserting them into your database.

Conclusion

By placing global scopes in your Eloquent model, you can enrich your query results with necessary entries, like global portions, without the burden of creating unnecessary duplicates in the database. This approach streamlines your application and improves performance when retrieving data.

Now you can confidently extend your food_portion model to match your application's requirements without compromising efficiency. Happy coding!