Skip to main content

React filtering object from an array not working, better options available?

Beginner here. I'm trying to make a character builder, where you have two lists of good and bad traits you can click on and move into a list of selected traits. My overall goal is that when I click on a trait, the trait is removed from it's initial list and moved to the selected list. From there, you can click on the trait in the selected list to return it back to it's initial list in it's initial index. From the selected list, I use data from those objects and display it, for example a 'points' counter to track how many traits you can still choose.

So far I can click on a trait and move it to the selected state array, and click on it in the selected list to remove it by filter. However this way currently the trait is not removed from it's initial list, allowing it to be selected multiple times which is not what I want. And from the selected list, all it does is filter it out of the array, not return it to it's original array in it's original index which it will have to be able to do when I successfully remove it from the initial list. I'm not sure the best way to go about this. I tried to use the same function that I used to remove the object from the selected list, but it's not working and I'm not sure why.

If you'd like to see what I have so far: GH Pages Preview

And here's my code:

  // initializing selected traits as empty
  const [selectedTraits, setSelectedTraits] = useState([])

  // List of selected traits
  const selectedlist = selectedTraits.map((item) => {
    return  <div key={item.name} onClick={() => handleChosenClick(item)} className={`selected-item ${item.value > 0 ? 'red' : 'green'}`}>
    <div className="selected-item-icon"><img src={item.icon} alt="" /></div>
    <div className="selected-item-name">{item.name}</div>
    <div className="selected-item-points">{`${item.value > 0 ? "+" : ""}`}{item.value}</div>
  </div>
  })

 // Mapping over three data sheets for the traits values/names/etc.
  const jobs = occupationsData.map((item) => {
    return <Occupation key={item.name}{...item} onClick={() => handleJobChange(item)} className={`occupation-item ${active == item && 'highlight'}` }/>;
  });

  const [goodtraits, setGoodTraits] = useState(goodtraitsData.map((item) => {
    return <Goodtrait key={item.name} {...item} onClick={() => handleTraitClickGood(item)} />;
  }));

  const [badtraits, setBadTraits] = useState(badtraitsData.map((item) => {
    return <Badtrait key={item.name} {...item} onClick={() => handleTraitClickBad(item)} />;
  }));

  //This you can ignore, for job selection which is working as intended.
  const handleJobChange = (item) => {
    setStartValue(item.value)
    setActive(item)
  }


  //function that moves whatever object is clicked into the selected traits
  const handleTraitClickGood = (item) => {
    setSelectedTraits(prevState => [...prevState, item ] )

    // This function isn't working as intended, not removing.
    setGoodTraits(prevTraits => {
      return prevTraits.filter(prev => prev !== item)
    })
  }
  const handleTraitClickBad = (item) => {
    setSelectedTraits(prevState => [...prevState, item ] )
  }



  //Function that removes an object on click in the selected list
  const handleChosenClick = (item) => {
    setSelectedTraits(prevTraits => {
      return prevTraits.filter(prev => prev !== item)
    })
  }

If this doesn't show enough, I apologize and here's a link to the GH repo just in case but hopefully you don't have to view this: GH Repo

I tried using the same exact function that removes an object from the selected list:

  const handleChosenClick = (item) => {
    setSelectedTraits(prevTraits => {
      return prevTraits.filter(prev => prev !== item)
    })
  }

In my function that moves the object to the selected list like this:

  const handleTraitClickGood = (item) => {
    setSelectedTraits(prevState => [...prevState, item ] )
    setGoodTraits(prevTraits => {
      return prevTraits.filter(prev => prev !== item)
    })
  }

However that doesn't work. Any reason why this isn't working or are there just better options to meet my goal? Feeling a little overwhelmed by this one as I'm pretty new. Eventually I want to try to make it that some traits are mutually exclusive, for example cannot take 'speed demon' if you have 'sunday driver' or vice versa. That issue is for another day though. Thank you!

Via Active questions tagged javascript - Stack Overflow https://ift.tt/QJ9sf2u

Comments

Popular posts from this blog

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype

ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

So, I am trying to predict the model but its throwing error like it has 10 features but it expacts only 1. So I am confused can anyone help me with it? more importantly its not working for me when my friend runs it. It works perfectly fine dose anyone know the reason about it? cv = KFold(n_splits = 10) all_loss = [] for i in range(9): # 1st for loop over polynomial orders poly_order = i X_train = make_polynomial(x, poly_order) loss_at_order = [] # initiate a set to collect loss for CV for train_index, test_index in cv.split(X_train): print('TRAIN:', train_index, 'TEST:', test_index) X_train_cv, X_test_cv = X_train[train_index], X_test[test_index] t_train_cv, t_test_cv = t[train_index], t[test_index] reg.fit(X_train_cv, t_train_cv) loss_at_order.append(np.mean((t_test_cv - reg.predict(X_test_cv))**2)) # collect loss at fold all_loss.append(np.mean(loss_at_order)) # collect loss at order plt.plot(np.log(al...