{"id":135441,"date":"2024-09-06T14:15:48","date_gmt":"2024-09-06T08:45:48","guid":{"rendered":"https:\/\/www.vskills.in\/certification\/tutorial\/?page_id=135441"},"modified":"2024-09-06T14:15:49","modified_gmt":"2024-09-06T08:45:49","slug":"adding-api-routes-for-liking-posts","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/adding-api-routes-for-liking-posts\/","title":{"rendered":"Adding API Routes for Liking Posts"},"content":{"rendered":"\n<p>To allow users to like or dislike posts in your social media application, you&#8217;ll need to create API routes that handle these actions. These routes will interact with your database to create, update, or delete post likes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Creating API Routes<\/strong><\/h2>\n\n\n\n<p>Python<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from fastapi import APIRouter, Depends\nfrom app.models import PostLike\nfrom app.schemas import PostLikeSchema\n\nrouter = APIRouter()\n\n@router.post(\"\/posts\/{post_id}\/like\")\nasync def like_post(post_id: int, current_user: User = Depends(get_current_user), db: Session = Depends(get_db)):\n    # Check if the user has already liked or disliked the post\n    existing_like = await db.query(PostLike).filter(PostLike.user_id == current_user.id, PostLike.post_id == post_id).first()\n    if existing_like:\n        return {\"message\": \"You have already liked or disliked this post\"}\n\n    # Create a new like\n    like = PostLike(user_id=current_user.id, post_id=post_id)\n    db.add(like)\n    await db.commit()\n    await db.refresh(like)\n    return {\"message\": \"Post liked\"}\n\n@router.delete(\"\/posts\/{post_id}\/like\")\nasync def unlike_post(post_id: int, current_user: User = Depends(get_current_user), db: Session = Depends(get_db)):\n    # Find the existing like\n    existing_like = await db.query(PostLike).filter(PostLike.user_id == current_user.id, PostLike.post_id == post_id).first()\n    if not existing_like:\n        return {\"message\": \"You have not liked or disliked this post\"}\n\n    # Delete the like\n    db.delete(existing_like)\n    await db.commit()\n    return {\"message\": \"Post unliked\"}\n<\/code><\/pre>\n\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The <code class=\"\">like_post<\/code> endpoint creates a new <code class=\"\">PostLike<\/code> record if the user hasn&#8217;t already liked or disliked the post.<\/li>\n\n\n\n<li>The <code class=\"\">unlike_post<\/code> endpoint deletes an existing <code class=\"\">PostLike<\/code> record if the user has already liked or disliked the post.<\/li>\n\n\n\n<li>Both endpoints use the <code class=\"\">current_user<\/code> dependency to retrieve the current user&#8217;s information.<\/li>\n\n\n\n<li>The <code class=\"\">db<\/code> dependency provides access to the database session.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Additional Considerations<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Error Handling:<\/strong> Implement appropriate error handling to catch exceptions like database errors or validation errors.<\/li>\n\n\n\n<li><strong>Authorization:<\/strong> Ensure that only authenticated users can like or dislike posts.<\/li>\n\n\n\n<li><strong>Rate Limiting:<\/strong> Consider implementing rate limiting to prevent abuse and spam.<\/li>\n\n\n\n<li><strong>Performance Optimization:<\/strong> Optimize your database queries for performance, especially if you have a large number of users and posts.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>To allow users to like or dislike posts in your social media application, you&#8217;ll need to create API routes that handle these actions. These routes will interact with your database to create, update, or delete post likes. Creating API Routes Python Explanation: Additional Considerations<\/p>\n","protected":false},"author":16,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-135441","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Adding API Routes for Liking Posts - Tutorial<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vskills.in\/certification\/tutorial\/adding-api-routes-for-liking-posts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Adding API Routes for Liking Posts - Tutorial\" \/>\n<meta property=\"og:description\" content=\"To allow users to like or dislike posts in your social media application, you&#8217;ll need to create API routes that handle these actions. 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