How to loop through two arrays with same key in Laravel

Question

I'm posting the below arrays, where each checkbox/checkbox tag are linked with a key (i.e. each category check box is linked with a "worldwide" checkbox):

<input type="checkbox" name="catpref[1]" value=10 > Politics
<input type="checkbox" name="worldwide[1]" value=1 > Worldwide

<input type="checkbox" name="catpref[2]" value=20 > Sports
<input type="checkbox" name="worldwide[2]" value=1 > Worldwide

I received them in the controller and trying to store the values.

 $catprefs = $request['catpref'];
 $worldwide = $request['worldwide'];

foreach($catprefs as $key => $value and $worldwide as $key => $value2){

      $save_catp = new Cpref();
      $save_catp->user_id = $user_id;
      $save_catp->qatype = $value;
      $save_catp->wwide= $value2;
      $save_catp->type = 1;
      $save_catp->save();

What would be the syntax for the above foreach loop ?

P.S : Please note that the arrays linked together via key could be different in size because a category could be selected while "worldwide" could be left unselected (i.e. array_combine() requires equal size arrays).

Umer Abbas · Accepted Answer · 2019-10-04 09:33:29Z

1

you can check if the worldwide key is set then add it's value other wise set to default value.

foreach($catprefs as $key => $value){

  $save_catp = new Cpref();
  $save_catp->user_id = $user_id;
  $save_catp->qatype = $value;
  $save_catp->wwide= (array_key_exists($key, $worldwide) ? $worldwide[$key] : 'default value');
  $save_catp->type = 1;
  $save_catp->save();
}

answered Oct 4, 2019 at 9:33

Umer Abbas

1,8763 gold badges16 silver badges21 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Michał Haracewiat · Accepted Answer · 2019-10-04 08:19:25Z

0

One of possible solutions could be "chunking" those inputs. You can use multidimensional arrays for form inputs.

Try to rename them like this:

<input type="checkbox" name="set[1][catpref]" value=10> Politics
<input type="checkbox" name="set[1][worldwide]" value=1> Worldwide

<input type="checkbox" name="set[2][catpref]" value=20> Sports
<input type="checkbox" name="set[2][worldwide]" value=1> Worldwide

Then your foreach loop will look something like this:

foreach ($request['set'] as ['catpref' => $catpref, 'worldwide' => $worldwide]) {
    var_dump($catpref, $worldwide);
}

answered Oct 4, 2019 at 8:19

Michał Haracewiat

4881 gold badge3 silver badges9 bronze badges

2 Comments

Abdallah Sakre Over a year ago

I received error : Invalid argument supplied for foreach()

Michał Haracewiat Over a year ago

Don't blindly copy-paste this code. Did you change checkboxes name attributes? What's inside $request variable? Please show me var_dump($request) just before loop.

Meet Dudani · Accepted Answer · 2019-10-04 09:23:02Z

0

Try the below code.

$catprefs = $request['catpref'];
$worldwide = $request['worldwide'];

foreach($catprefs as $key => $value){
   $save_catp = new Cpref();
   $save_catp->user_id = $user_id;
   $save_catp->qatype = $value;
   $save_catp->wwide= isset($worldwide[$key]) ? $worldwide[$key] : 1;
   $save_catp->type = 1;
   $save_catp->save();
}

edited Oct 4, 2019 at 9:23

answered Oct 4, 2019 at 8:04

Meet Dudani

74 bronze badges

3 Comments

Abdallah Sakre Over a year ago

I received error :Undefined offset: 3 at this line : $save_catp->wwide= $worldwide[$key];

Abdallah Sakre Over a year ago

I tried and it didn't give an error, but now all categories are having the wwide set to 1 even the ones that have the worldwide checkbox not selected.

Meet Dudani Over a year ago

$save_catp->wwide= isset($worldwide[$key]) ? $worldwide[$key] : 1; Change '1' with your default value and it will work.

Collectives™ on Stack Overflow

How to loop through two arrays with same key in Laravel

3 Answers 3

Comments

2 Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

2 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related