sqlmodel-basecrud

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sqlmodel-basecrud

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Simple package that provides base CRUD operations for your models.

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<h2 align="center">SQLModel BaseCRUD</h2>

<div align="center">
    
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_Simple package that provides base CRUD operations for your models._

</div>

---

_**Documentation:**_ [https://woofz.github.io/sqlmodel-basecrud/latest](https://woofz.github.io/sqlmodel-basecrud/latest)

_**Sources:**_ [https://github.com/woofz/sqlmodel-basecrud](https://github.com/woofz/sqlmodel-basecrud)

---

### What is SQLModel BaseCRUD?

With SQLModel BaseCRUD, you can implement your CRUD operations easily in your project. It is simple as declaring a variable!  
This package consists in two classes: _BaseCRUD_ and _BaseRepository_.  
**BaseCRUD** is the basic class that implements the basic CRUD operations, while **BaseRepository** is the repository used to execute those operations. You could also write your own repository class and use basic CRUD operation provided by **BaseRepository** class by extending it to your own repository class!

### Installation

##### Using pip

`pip install sqlmodel-basecrud`

##### Using poetry

`poetry add sqlmodel-basecrud`

### Operations

### Usage

##### Basic setup

Consider these two models as example:

```python
class Team(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    name: str = Field(index=True)
    headquarters: str

heroes: List["Hero"] = Relationship(back_populates="team")
    
    
class Hero(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    name: str = Field(index=True)
    secret_name: str
    age: Optional[int] = Field(default=None, index=True)

team_id: Optional[int] = Field(default=None, foreign_key="team.id")
    team: Optional[Team] = Relationship(back_populates="heroes")
```

We want to perform some operations on these models. First of all we instantiate a _BaseRepository_, specifying the database session and the model that we want to manipulate.

```python
# other imports..
from sqlmodel_basecrud import BaseRepository

with Session(engine) as session:
    hero_repository = BaseRepository(db=session, model=Hero)
    team_repository = BaseRepository(db=session, model=Team)
```

##### CREATE operation

Persists an item into the database.

```python
# CREATE operation
my_hero = Hero(name='Github Hero', secret_name='Gitty', age=31)
hero_repository.create(my_hero)
# now my_hero is persisting in the database!
```

##### BULK CREATE operation
Persists multiple items into the database. You have to pass them in a list.
```python
# BULK CREATE operation
my_heroes_list = [ Hero(name='Github Hero', secret_name='Gitty', age=31),
                 Hero(name='Hero 2', secret_name='Hero2', age=21),
                 Hero(name='Hero 3', secret_name='Hero3', age=29)
               ]
hero_repository.bulk_create(my_heroes_list)
```
##### GET operation
GET operation simply gets a single record from the database.
```python
result = hero_repository.get(id=1, name='Github Hero')
```
Note that you can also use a BinaryExpression. Here's an example: 
```python
result = hero_repository.get(Hero.id >= 3)
```
*result* variable will be an instance of Hero, if a result matches the criteria, or None type.
##### FILTER operation
Gets one or more instances from the database, filtering them by one or more column/s.
```python
results = hero_repository.filter(age=31)
```
Like the GET operation, here you can use a BinaryExpression as well. Here's an example:  
```python
result = hero_repository.filter(Hero.age == 31)
```
*results*  will be a *List* with zero or more elements.

##### GET ALL operation

Gets all instances of given module from the Database

```python
results = hero_repository.get_all()
```

_results_ will be a _List_ with zero or more elements.

##### UPDATE operation

Updates a record into the database.

```python
instance_to_update = hero_repository.get(id=1)
instance_to_update.name = 'Super New Name'
instance_to_update.age = 27

hero_repository.update(instance_to_update)
```

The hero will have his columns *name* and *age* with updated values.

##### DELETE operation

Removes an instance from the database

```python
instance_to_remove = hero_repository.get(id=1)
hero_repository.delete(instance_to_remove)
```

The instance will be removed from the database.

### Custom Repository

If you want to extend the BaseRepository class with some custom methods, you can write your own repository class. Just extend BaseRepository or BaseCRUD class and call the super class constructor, by passing it two essential parameters:

*   **db**: must be a Session instance;
*   **model**: must be a Type\[SQLModel\].

```python
from sqlmodel_basecrud import BaseRepository

class MyCustomRepository(BaseRepository):

def __init__(self, db: Session, model: Type[SQLModel]):
        super().__init__(model=model, db=db)
```

### What's next

The first thing that comes to my mind is to extend the features of Async to BaseCRUD class. I will try to enhance the features of the project. Suggestions are appreciated 🤩

### Inspired by

_FastAPI_: framework, high performance, easy to learn, fast to code, ready for production

_SQLModel_, SQL databases in Python, designed for simplicity, compatibility, and robustness.

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