A json builder used to create JSON structures using a simple DSL (based on Jbuilder). It is a simple and easy to use tool to create JSON structures in Rust.

notes @notes |note| do
    content @note.content
    author do
        name @note.author.name
        age @note.author.age
    end
    comments @note.comments |comment| do
        content @comment.content
        author do
            name @comment.author.name
            age @comment.author.age
        end
    end
end

Built with the above DSL, the following JSON structure will be created:

{
    "notes": [
        {
            "content": "Note content",
            "author": {
                "name": "Author name",
                "age": 20
            },
            "comments": [
                {
                    "content": "Comment content",
                    "author": {
                        "name": "Comment author name",
                        "age": 25
                    }
                }
            ]
        }
    ]
}

Add the following to your Cargo.toml file:

[dependencies]
jsonbuilder = "0.1.0"

use jsonbuilder::{JsonBuilder, context_map};

#[derive(Serialize)]
struct Note {
    content: String,
}

fn main() {
    let context = context_map!({
        "note" => Note::new(),
    })

    let json = JsonBuilder::render("data", context)
}

JsonBuilder searches for a file that ends with json.jb in templates directory.

or you can render with raw string:

use jsonbuilder::JsonBuilder;

#[derive(Serialize)]
struct Note {
    content: String,
}

fn main() {
    let context = context_map!({
        "note" => Note::new(),
    })

    let input = "
    note @note.content

    ...
    "
    let json = JsonBuilder::render_raw(input, context)
}

you can change the settings by creating a jsonbuilder.toml file in the root of your project.

template_path = "another/path/to/templates"

The syntax is based on Jbuilder and is very similar to it. The following is a list of the supported syntax:

name @variable

names @names |item| do
    name @item
end

person do
    name @person.name
    age @person.age
    _ @person.abilities # _ is a special character that allows you to access the entire object
end

• Basic DSL
• Array mapping
• Object mapping
• Extend with another templates
• Conditional statements
• Merge objects

Contributions are welcome! Feel free to open an issue or submit a pull request.

See the contribution guidelines for more information.

This project is licensed under the MIT License - see the LICENSE file for details.