helixml / demo-recipes

Frontend Development

Overview

The frontend of the demo-recipes application is built with React.js, a popular JavaScript library for building user interfaces. It’s responsible for rendering the UI elements, handling user interactions, and fetching data from the backend to display recipes.

Key Components

  • Recipe List: Displays a list of recipes, each with its name, image, and basic information.
  • Recipe Details: Shows a detailed view of a selected recipe, including ingredients, instructions, and nutritional information.
  • Search Bar: Allows users to search for recipes based on keywords.
  • Filter Options: Provides options to filter recipes based on dietary preferences, cuisine type, or other criteria.

Data Fetching

The frontend interacts with the backend API to fetch recipe data. This is accomplished using the fetch API in JavaScript, making requests to the API endpoints defined in the backend.

State Management

React components manage their own state, which represents the data associated with each component. For managing shared state across multiple components, consider using a state management library like Redux or Context API.

Routing

React Router is used to handle navigation between different pages within the application. This allows users to switch between the recipe list, recipe details, and other sections of the application.

Styling

The frontend uses CSS to style the user interface. The styling can be applied directly within the component files or through external stylesheets. Consider using a CSS framework like Bootstrap or Material-UI for pre-built components and styles.

Testing

Unit tests are used to verify the functionality of individual components. Integration tests can be used to test the interactions between components and the backend.

Code Structure

The frontend codebase is organized into components, each responsible for a specific part of the UI. The following file structure is recommended:

src/
            components/
              RecipeList/
                RecipeList.js
                RecipeItem.js
              RecipeDetails/
                RecipeDetails.js
              SearchBar/
                SearchBar.js
              FilterOptions/
                FilterOptions.js
            pages/
              HomePage.js
              RecipePage.js
            utils/
              api.js
              helpers.js
            App.js
            index.js

Example: Recipe List Component

The following code shows an example of the RecipeList component:

import React, { useState, useEffect } from 'react';
          
          const RecipeList = () => {
            const [recipes, setRecipes] = useState([]);
          
            useEffect(() => {
              const fetchRecipes = async () => {
                const response = await fetch('/api/recipes');
                const data = await response.json();
                setRecipes(data);
              };
          
              fetchRecipes();
            }, []);
          
            return (
              <ul>
                {recipes.map((recipe) => (
                  <li key={recipe.id}>
                    <h3>{recipe.name}</h3>
                    <img src={recipe.image} alt={recipe.name} />
                  </li>
                ))}
              </ul>
            );
          };
          
          export default RecipeList;

Example: API Utility Function

The following code shows an example of a utility function to fetch data from the backend API:

import axios from 'axios';
          
          const api = {
            getRecipes: async () => {
              const response = await axios.get('/api/recipes');
              return response.data;
            },
          };
          
          export default api;

Note: This is a simplified example and the actual codebase may be more complex. The structure and implementation details can be adapted to your specific project requirements.

Additional Resources