peewee2click 0.0.4

What are command-line CRUDL interfaces?

Interfaces that let you Create, Read, Update, Delete or List your models via command-line.

Installation

Just run pip install peewee2click.

Example of use

Let supose you have the following peewee class:

import peewee

class MyClass(peewee.Model):
    my_char_field = peewee.CharField(
        max_length=8, help_text="Field to store char.")
    my_int_field = peewee.IntegerField(
        default=5, help_text="Field to store int.")

To create a very basic command-line CRUDL you only need the following code:

from peewee2click import CRUDL
import click

@click.command(help="Creates a new myclass")
@CRUDL.click_options_from_model_fields(MyClass)
def create(**fields):
    CRUDL.create(MyClass, **fields)

@click.command(help="Shows myclass information")
@click.argument("primary_key", type=int)
def show(primary_key):
    CRUDL.show(MyClass, primary_key)

@click.command(help="Updates myclass information")
@click.argument("primary_key")
@CRUDL.click_options_from_model_fields(MyClass)
def update(primary_key, **changed_fields):
    CRUDL.update(MyClass, primary_key, **changed_fields)

@click.command(help="Deletes an existing myclass")
@click.argument("primary_key")
def delete(primary_key):
    CRUDL.delete(MyClass, primary_key)

@click.command("list", help="Enumerate myclasses")
@click.option("fields", "--add-field", multiple=True,
              help="Shows a custom field in the result")
def list_(fields):
    base_fields = ('id', 'my_char_field', 'my_int_field')

    CRUDL.list(MyClass, base_fields, extra_fields=fields)

As you can see, CRUDL.click_options_from_model_fields gathers all the Model fields for you, creating automatically the parameters options “--my-char-field=<new_value>” and “-my-int-field=<new_value>” for the create and update commands.

Other commands

Besides the CRUDL methods seen in the example above, peewee2click also provides two helper functions: one_and_only_one and max_one. Both provide a way of checking that arguments are passed in a proper way.

Check the docstrings of the functions for further information.

Running the tests

Install the develop dependencies: pip install -e requirements/develop.txt. Then run tox.

You will need sqlite support in your Python client to run the tests.