random numbers intervals based on checkbox - php

Question

I’m new to both Laravel and php. Need some help with generating random numbers.
If checkbox 1 (exercise_choice_10) is selected a random number between 1-10 shall be generated.
If checkbox 2 (exercise_choice_20) is selected a random number between 11-20 shall be generated.
If checkbox 3 (exercise_choice_30) is selected a random number between 21-30 shall be generated.
<input type="checkbox" name="exercise_choice_10" value="10" {{ app('request')->input('exercise_choice_10') ? 'checked' : '' }}> Type 1</input></BR>
<input type="checkbox" name="exercise_choice_20" value="20" {{ app('request')->input('exercise_choice_20') ? 'checked' : '' }}> Type 2</input></BR>
<input type="checkbox" name="exercise_choice_30" value="30" {{ app('request')->input('exercise_choice_30') ? 'checked' : '' }}> Type 3</input></BR>
<form action="{{ route('exam.robot', ['course' => $course]) }}" method="post">
#csrf
<input type="checkbox" name="exercise_choice_10" value="10" {{ app('request')->input('exercise_choice_10') ? 'checked' : '' }}> Type 1</input></BR>
<input type="checkbox" name="exercise_choice_20" value="20" {{ app('request')->input('exercise_choice_20') ? 'checked' : '' }}> Type 2</input></BR>
<input type="checkbox" name="exercise_choice_30" value="30" {{ app('request')->input('exercise_choice_30') ? 'checked' : '' }}> Type 3</input></BR>
</BR>
<button class="button">Submit</button>
</BR>
</BR>
{{ $random }}
</form>

Answer 1

In your controller, you can check if the checkbox was checked, and use the value from that checkbox. We know from your examples that the range will be between $value - 9 and $value.
We can use rand($min, $max) to get the random value.
if ($request->has("exercise_choice_10")) {
$value = $request->input("exercise_choice_10");
$randomValue = rand($value-9, $value);
}
Repeat the same for your other checkboxes and return the $randomValue to your view.
Keep in mind, by using checkboxes, all 3 can be checked at any given time - so you may want radio-buttons instead (where only one per name can be checked).

Answer 2

Thank you for your reply Qirel :)
This solution (see below) did only work with radiobuttons. When using checkbox the last checked checkbox will override the rest. So Im still working on a solution for checkbox.
if ($request->input('exercise_choice_10')) {
$value = $request->input("exercise_choice_10");
$random = rand($value-9, $value);
}
else {
}
if ($request->input('exercise_choice_20')) {
$value = $request->input("exercise_choice_20");
$random = rand($value-9, $value);
}
else {
}
if ($request->input('exercise_choice_30')) {
$value = $request->input("exercise_choice_30");
$random = rand($value-9, $value);
}
else {
}