Laravel - Eloquent “Has”, “With”, “WhereHas”

1. Why we use whereHas in laravel?
2. Where has and with in laravel?
3. What is with () in laravel?
4. What eloquent means in laravel?
5. Is null laravel query?
6. What is pivot table in laravel?
7. How do I use Wherebetween in laravel?
8. Does laravel have request?
9. How do I join a query in laravel?
10. Is laravel better than CodeIgniter?
11. What is soft delete in laravel?
12. What is fillable in laravel model?

Why we use whereHas in laravel?

whereHas and orWhereHas methods to put where conditions on your has queries. These methods allow you to add customized constraints to a relationship constraint.

Where has and with in laravel?

Laravel – Eloquent “Has”, “With”, “WhereHas”

• has , with and whereHas can sometimes be confusing for beginner developers. ...
• with() is generally used with eager loading, which is a quick way to pull related models. ...
• has() is used to filter the selecting model based on the selected relationship. ...
• whereHas() is almost the same as has() .

What is with () in laravel?

with() function is used to eager load in Laravel. Unless of using 2 or more separate queries to fetch data from the database , we can use it with() method after the first command. It provides a better user experience as we do not have to wait for a longer period of time in fetching data from the database.

What eloquent means in laravel?

Laravel includes Eloquent, an object-relational mapper (ORM) that makes it enjoyable to interact with your database. When using Eloquent, each database table has a corresponding "Model" that is used to interact with that table.

Is null laravel query?

Check if null: whereNull

Laravel Eloquent provides a handy method called whereNull , which you could use to verify if a specific value of a given column is NULL.

What is pivot table in laravel?

Laravel Daily has a new post on pivot tables and many-to-many relationships: ... A pivot table is an example of intermediate table with relationships between two other “main” tables. This is a feature that is, indeed, a little hard to figure in the beginning.

How do I use Wherebetween in laravel?

You can use whereRaw() to add a raw where clause to the query, for example: $results = SpPrice::whereRaw("('2014-08-15' between `from_date` and `to_date`) || ('2014-09-18' between `from_date` and `to_date`)")->get();

Does laravel have request?

The $request->has method will now return true even if the input value is an empty string or null .
...
In Laravel 5.5:

1. $request->exists : Alias for $request->has.
2. $request->has : Determine if the request contains a given input item key.
3. $request->filled : Determine if the request contains a non-empty value for an input item.

How do I join a query in laravel?

Understanding Join Queries in Laravel By Example

1. First, we target the user based on the user id, just like in the first query of the original code block.
2. Next, we join our result with the role table, grabbing the role which is equal to this user's role. ...
3. Finally, we decide what to retrieve.

Is laravel better than CodeIgniter?

Comparison between Laravel and Codeigniter

Ultimately, Laravel is a better framework than CodeIgniter majorly due to the coding pattern which is the most favored for its elegant look. Along with this, it also supports robust application development in no time.

What is soft delete in laravel?

In Laravel Soft Delete, data are not actually deleted from the database but a deleted_at attribute is added to the data, so when we are querying data from the database, Eloquent looks for data with null deleted_at value and give out, but when a data has non-null deleted_at value, it treats it as a deleted data.

What is fillable in laravel model?

In eloquent ORM, $fillable attribute is an array containing all those fields of table which can be filled using mass-assignment. Mass assignment refers to sending an array to the model to directly create a new record in Database.