db/heromodels

Hero Models

A Rust library for model management with a base model trait implementation and builder pattern support.

Features

• Base Model Trait: Common interface for all models with standard methods
• Builder Pattern: All models use the builder pattern for flexible and clear construction
• Indexing Support: Built-in support for model indexing with customizable keys
• Comment System: Integrated comment system that can be attached to any model
• Timestamps: Automatic creation and modification timestamps

Usage

Add this to your Cargo.toml:

[dependencies]
heromodels = "0.1.0"

Basic Example

use heromodels::{BaseModel, User, Comment};

fn main() {
    // Create a new user using the builder pattern
    let user_result = User::builder(1)
        .username("johndoe")
        .email("john.doe@example.com")
        .full_name("John Doe")
        .build();
        
    let mut user = user_result.expect("Failed to build user");
    
    // Create a comment for the user using the builder pattern
    let comment_result = Comment::builder(1)
        .user_id(2) // commenter's user ID
        .model_id(user.get_id())
        .model_type(User::db_prefix())
        .content("This is a comment on the user")
        .build();
        
    let comment = comment_result.expect("Failed to build comment");
    
    // Add the comment to the user
    user.base_data.add_comment(comment.get_id());
    
    // Get the database keys for the user
    let keys = user.db_keys();
    for key in keys {
        println!("{}: {}", key.name, key.value);
    }
}

Creating Custom Models

To create your own model that inherits from the base model:

use serde::{Deserialize, Serialize};
use heromodels::model::{BaseModel, BaseModelData, IndexKey};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Product {
    pub base_data: BaseModelData,
    pub name: String,
    pub price: f64,
    pub sku: String,
}

impl BaseModel for Product {
    fn db_prefix() -> &'static str {
        "product"
    }
    
    fn get_id(&self) -> u32 {
        self.base_data.id
    }
    
    fn db_keys(&self) -> Vec<IndexKey> {
        vec![
            IndexKey {
                name: "name",
                value: self.name.clone(),
            },
            IndexKey {
                name: "sku",
                value: self.sku.clone(),
            },
        ]
    }
}

// Implement a builder for your custom model
pub struct ProductBuilder {
    id: u32,
    base_data_builder: Option<heromodels::model::BaseModelDataBuilder>,
    name: Option<String>,
    price: Option<f64>,
    sku: Option<String>,
}

impl ProductBuilder {
    pub fn new(id: u32) -> Self {
        Self {
            id,
            base_data_builder: Some(BaseModelData::builder(id)),
            name: None,
            price: None,
            sku: None,
        }
    }
    
    // Add builder methods...
    
    pub fn build(self) -> Result<Product, &'static str> {
        // Implementation...
    }
}

impl Product {
    pub fn builder(id: u32) -> ProductBuilder {
        ProductBuilder::new(id)
    }
}

License

MIT