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- [Summary ](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/branch/1.1/README.md )
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- [[tutorial v1.1_000] Creating a structure file](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_000/README.md) ([diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_000~1..v1.1_000))
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# [tutorial v1.1_001] Let’ s add our first variable
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[View the diff ](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_001~1..v1.1_001 )
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[Read the documentation ](https://pedago.gwenaelremond.fr/bribes/rougail/tutorial/preliminary.html#let-s-add-our-first-variable )
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## Screenshot
< img src = "firefox.png" width = 50% height = 50% alt = "Firefox Proxy setting" / >
## Clone and install
To test this tutorial, you need to download this repository and install Rougail:
```shell
git clone -b 1.1 https://forge.cloud.silique.fr/stove/rougail-tutorials.git
cd rougail-tutorials
python -m venv venv_rougail
. venv_rougail/bin/activate
pip install rougail-cli rougail-output-exporter rougail-output-doc rougail-user-data-yaml
```
Then switch to the tutorial page:
```shell
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git switch --detach v1.1_001
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```
## Structure
< p >
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< a href = "https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_001/./" > .< / a > < br / >
└── < a href = "https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_001/./firefox/" > firefox< / a > < br / >
└── < a href = "https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_001/./firefox/00-proxy.yml" > 00-proxy.yml< / a > < br / >
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< br / > < br / > < / p >
Contents of the firefox/00-proxy.yml file
```yml
%YAML 1.2
---
version: 1.1
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proxy_mode:
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...
```
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***
### Let's generate the documentation
```shell
rougail -m firefox/ -o doc
```
| Variable |
|------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ** < a id = "proxy_mode" name = "proxy_mode" > proxy_mode</ a > **< br /> [`string`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory` |
***
### Let's generate the changelog
```shell
rougail -m firefox/ -o doc --doc.contents changelog
```
#### New variable
| Variable |
|------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ** < a id = "proxy_mode" name = "proxy_mode" > proxy_mode</ a > **< br /> [`string`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory` |
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***
## User datas
### Example 1
#### config/01/config.yml
```yml
---
```
***
#### Output
```shell
rougail -m firefox/ -u yaml -yf config/01/config.yml
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```
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> [!CAUTION]
>
> - proxy_mode: :stop_sign: <span style="color: #C23636">mandatory variable but has no value</span>
***
#### Output in read write mode
```shell
rougail -m firefox/ -u yaml -yf config/01/config.yml --cli.read_write
```
> [!NOTE]
>
> **Caption:**
> - Variable
> - <span style="color: #B8860B">Default value</span>
Variables:
- :notebook: proxy_mode: < span style = "color: #B8860B " > null</ span >
***
### Example 2
#### config/02/config.yml
```yml
---
proxy_mode: No proxy
```
***
#### Output
```shell
rougail -m firefox/ -u yaml -yf config/02/config.yml
```
> [!NOTE]
>
> **Caption:**
> - Variable
> - <span style="color: #006400">Modified value</span>
Variables:
- :notebook: proxy_mode: < span style = "color: #006400 " > No proxy</ span > ← loaded from the YAML file "config/02/config.yml"
***
### Example 3
#### config/03/config.yml
```yml
---
proxy_mode: 1
```
***
#### Output
```shell
rougail -m firefox/ -u yaml -yf config/03/config.yml
```
> [!CAUTION]
>
> - proxy_mode
> - [#EFBF04]:bell: the value "1" is an invalid string, it's not a string, it will be ignored when loading from the YAML file "config/03/config.yml"[/#EFBF04]
> - [#C23636]:stop_sign: mandatory variable but has no value[/#C23636]
***
#### Output when invalid user data is an error
```shell
rougail -m firefox/ -u yaml -yf config/03/config.yml --cli.invalid_user_data_error
```
> [!CAUTION]
>
> - proxy_mode: :stop_sign: <span style="color: #C23636">the value "1" is an invalid string, it's not a string, it has been loading from the YAML file "config/03/config.yml"</span>
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***
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- [[tutorial v1.1_002] Describe the variable](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_002/README.md) ([diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_002~1..v1.1_002))