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Fabian Affolter 2016-02-20 10:50:24 +01:00
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@ -1,6 +1,6 @@
---
layout: page
title: "Development tuorial"
title: "Development tutorial"
description: "Tutorial about the first steps on Home Assistant development"
date: 2016-02-20 07:00
sidebar: false
@ -13,6 +13,9 @@ This is a simple tutorial on how to write a component for [Home Assistant](https
The setup of a development environment is described in the [Developers section](/developers/#starting-development) of the documentation.
## {% linkable_title Component %}
As a start, create a file `information.py` in your Git checkout of Home Assistant in the folder `homeassistant/component/`.
```python
@ -66,7 +69,7 @@ If you replace `_LOGGER.info("The 'information' component is ready!")` with or a
hass.states.set('information.Text', 'Info component')
```
Then the component will not be different to the sample included in the `config/custom_components` folder or shown as an [example](/cookbook/python_component_basic_state/). After a start or a restart of Home Assistant the component will be visible in the frontend.
then the component will not be different to the sample included in the `config/custom_components` folder or shown as an [example](/cookbook/python_component_basic_state/). After a start or a restart of Home Assistant the component will be visible in the frontend.
<p class='img'>
<img src='/images/screenshots/create-component01.png' />
@ -74,6 +77,8 @@ Then the component will not be different to the sample included in the `config/c
The next step is the introduction of configuration options. Most configuration details are coming out of the `configuration.yaml` file. To do that we need to update the `def setup()` method to accept configuration information and access the configuration variable in the `setup` method.
More details about this topic can be found in the [User given configuration](/developers/creating_components/#config-user-given-configuration) section.
```python
import logging
@ -108,10 +113,28 @@ from homeassistant.helpers import validate_config
return False
```
So far our new component is rendered as a default compoment in the frontend. But we want our own view of the component in the frontend. We assume that you have setup the (frontend development)[/developers/frontend/] already
## {% linkable_title Frontend %}
So far our new component is rendered as a default compoment in the frontend. But we want our own view of the component in the frontend. We assume that you have setup the (frontend development)[/developers/frontend/] already.
We need two new files in the folder `src/cards/`:
- ha-information-card.html
- ha-information-card.js
TBD
Rebuild the frontend.
```bash
$ script/build_frontend
```
Change the [http](/components/http/) component to load the `development` version of the frontend as also mentioned in the [ Setting up the environment](/developers/frontend/#setting-up-the-environment) section of the (frontend development)[/developers/frontend/] page.
```yaml
http:
development: 1
```