File Uploads

Yaiko makes it easy to handle multipart file uploads.

Usage

1. Import File Upload Types

use yaiko_core::{FileUpload, parse_multipart};

2. Handle Upload Request

Use parse_multipart to extract files from the request body:

async fn upload_handler(req: Request) -> Result<Response, Box<dyn std::error::Error + Send + Sync>> {
    // Get Content-Type header (required for boundary)
    let content_type = req.headers.get("content-type")
        .and_then(|v| v.to_str().ok())
        .unwrap_or("");

    // Parse files
    let files = parse_multipart(req.body, content_type).await?;
    
    for file in files {
        println!("Uploaded: {} ({} bytes)", file.filename, file.size);
        
        // Save to disk
        file.save_to("./uploads").await?;
    }
    
    Ok(Response::new().text("Upload successful"))
}

FileUpload Struct

The FileUpload struct contains:

pub struct FileUpload {
    pub filename: String,
    pub content_type: String,
    pub size: usize,
    pub data: Vec<u8>,
}

Methods

• save_to(directory: &str): Saves the file to the specified directory. It automatically creates the directory if it doesn't exist.

Frontend Example

<form action="/upload" method="POST" enctype="multipart/form-data">
    <input type="file" name="file">
    <button type="submit">Upload</button>
</form>