Bulletin board - Database optimisation

This question is a follow on from this Question The project and problem The project I am currently working on is a bulletin board for a large non-profit organisation. The bulletin board will be...

How can I handle R CMD check "no visible binding for global variable" notes when my ggplot2 syntax is sensible?

EDIT: Hadley Wickham points out that I misspoke. R CMD check is throwing NOTES, not Warnings. I'm terribly sorry for the confusion. It was my oversight. The short version R CMD check throws this...

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I have an offline web application using appcaching. I need to provide it about 10MB - 20MB of data that it will save (client-side) consisting mainly of PNG image files. The operation is as...

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I have my comments resource nested in my posts resource, and both resources act_as_votable. How would I go about defining upvote/downvote? Here is how I am doing it now(comments controller) ...

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I have this controller which grabs posts from a post table. Every post in the posts table have the relation "hasMany" with another table likes. Controller: public function getDashboard(){ $posts...

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I'm trying to get it so people can like a post on a button click which will upload a row to the likes table and then if they press the button again it will delete the record and unlike the post....

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I have a list of data in which the numbers are between 1000 and 20 000. data = [1000, 1000, 5000, 3000, 4000, 16000, 2000] When I plot a histogram using the hist() function, the y-axis...

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The rule is that controllers shouldn't have business logic, instead they should delegate it to the services. But when we do that, we can't handle all possible cases and return appropriate HTTP...

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I am doing the like and dislike for a post in a RecyclerView, I call the api after changing the view but the problem is that the RecyclerView always scrolls to the top when I notify it with the...

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I have post containers that contains two elements: Like and dislike buttons. There are multiple posts, so I have multiple post containers each containing their respective buttons. When a button is...

How to make user to Like/Dislike post only for once in Django?

Started learning Django a few days ago but now I'm stuck with this issue. It's a blog website and i'm working with like/dislike function at the moment. For now authenticated user can like the same...

Symfony Doctrine QueryBuilder - Get the latest published news of each category

So i've seen many subjects about my issue (greatest-n-per-group), but it seems like i just can't make it work with the queryBuilder! (for example : post) I'm running symfony...

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I'm updating a "message board" project I did (Brad Traversy's MERN stack course) to include comment likes. For a simple example, think Facebook: you create a post which people can like, and...

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I have a method, const handleUpvote = (post, index) => { let newPosts = JSON.parse(JSON.stringify(mappedPosts)); console.log('mappedPosts', mappedPosts); // null console.log('newPosts',...

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I'm trying to build a system for like & dislike posts in my project but I'm facing some issue using this on the client side , I have this form but the problem there is no communication between...

How to make a function to extract the new rich text links in Google Sheets while referencing specific ranges?

Some time ago, Google Sheets changed the adding of links to rich text, and now links cannot be found at the formula anymore. Personally I dislike this change very much because I use a custom...

How can we mutate items loaded using Paging 3 android?

I am loading posts from network and for this i'm using Paging 3, but now problem is that my list items contains Like/Dislike button, suppose *Like* is clicked then how can i update data for that...

How do I achieve this route structure with search filter and tag using Vue Router?

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How to update data from recyclerview adapter in kotlin flow using MVVM architecture?

So, I am making something similar to instagram feed using MVVM architecture, coroutines, Jetpack. I am displaying list of post in recyclerview using paging-3 library. Each post contains the...

How to make an atomic process in React (async/await)?

Imagine a post that can be liked when pressing a button. This button modifies a remote database, so it will take a little while to associate the like to the specific post. Now, if an user starts...

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I have posts on my webpage that are being displayed via a Fetch API 'POST' method and I managed to create a like/dislike button for each post that toggles back and forth when clicked. The like...

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I have a models named Post and Like. How can i get json with ount of likes and dislikes grouped by date (date field in Like model)? Here is my models.py class Post(models.Model): """Post...

Wordpress sort WP ULike posts in custom query?

I'm trying to implement this WP ULike plugin sort example inside my custom query but no success so far as I'm not a WordPress pro. Any help is appreciated, thanks a lot! My custom...

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I am trying to fit a brms model in R. Right now it does not converge well, whereas it worked well with JAGS. The only difference being the initial values, I would like to specify myself the...

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I'm creating a social media feed where each post is an image of a different size. The user can swipe right to like, left to dislike, up to skip to the next post, or down to go back. To do that,...

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i'm building API with laravel 8 and want to add comments and replies for posts with polymorphic relation (because i have posts and analysis that they have comments.) so i created my tables. my...

Best way to implement sorting over a large number of record in Mongo?

I am making an application here users will be able to post and like/dislike. In the backend, I am using Node and Mongoose. Now, suppose I have some 500k posts (or may be, millions, just for the...