Level 75
What does a dd give you?
Apr 15, 2021
15
Level 1
Undefined array key 1, ErrorException while trying to pass a variable to view
sorry for bothering, I was expected to get some results after passing $wordsset to the view with compact. Similar things work in other parts of the project. But here it doesn't
I would be very pleased to hear from you if you have any idea?
in the function
$wordsset = [[1],[[["1"],["1"],["scaun"]]],[[["2"],["1"],["stuhl"]]],[[["3"],["1"],["chair"]],[["4"],["2"],["seat"]]],[[["5"],["la"],["chaise"]]]];
return view('back.editword', compact('wordsset'));
in the blade php
{{var_export($wordsset,true)}}
Level 1
dd($wordsset); gives me exactly this:
array:5 [▼
0 => array:1 [▼
0 => 1
]
1 => array:1 [▼
0 => array:3 [▼
0 => array:1 [▼
0 => "1"
]
1 => array:1 [▼
0 => "1"
]
2 => array:1 [▼
0 => "scaun"
]
]
]
2 => array:1 [▼
0 => array:3 [▼
0 => array:1 [▼
0 => "2"
]
1 => array:1 [▼
0 => "1"
]
2 => array:1 [▼
0 => "stuhl"
]
]
]
3 => array:2 [▼
0 => array:3 [▼
0 => array:1 [▼
0 => "3"
]
1 => array:1 [▼
0 => "1"
]
2 => array:1 [▼
0 => "chair"
]
]
1 => array:3 [▼
0 => array:1 [▼
0 => "4"
]
1 => array:1 [▼
0 => "2"
]
2 => array:1 [▼
0 => "seat"
]
]
]
4 => array:1 [▼
0 => array:3 [▼
0 => array:1 [▼
0 => "5"
]
1 => array:1 [▼
0 => "la"
]
2 => array:1 [▼
0 => "chaise"
]
]
]
]
Level 1
I had the same error. In my case problem was in my blade. I leave open loop and dont saw it... (－‸ლ) So, to all visitors searching for answer, chceck your blades :)
Level 75
Where is the error coming from? The array is a correct array. Remember an array is 0 based, starts at 0.
Level 1
There is this, stack trace opening in browser. And 59 pages open respectively. None of them is anything that I see my own code.
There is the 55th. page which does not show anything, but on the title it says "1 unknown frame" . somehing mysterious.
Level 75
That array is correct, do you get error before view is loaded, or after?
Or you calling correct view?
Level 1
I suppose the things I have done until the dd($wordset); is correct as it shows the array.
It is interesting because I have removed the
{{var_export($wordsset,true)}}
from blade file, and there is not a single variable calling now. But I am still getting the same "Undefined array key 1" error.
Level 75
I even tried:
$wordsset = [[1],[[["1"],["1"],["scaun"]]],[[["2"],["1"],["stuhl"]]],[[["3"],["1"],["chair"]],[["4"],["2"],["seat"]]],[[["5"],
echo $wordsset[0][0];
die;
Which gives:
1
See if it works in blade
{{ $wordsset[0][0] }}
edit, I just tryed and this workded:
$wordsset = [[1],[[["1"],["1"],["scaun"]]],[[["2"],["1"],["stuhl"]]],[[["3"],["1"],["chair"]],[["4"],["2"],["seat"]]],[[["5"],["la"],["chaise"]]]];
return view('testarray.atest', compact('wordsset'));
And in view, just a quick setup:
<!DOCTYPE html>
<html lang="en">
<head>
</head>
<body>
{{ $wordsset[0][0] }}
</body>
</html>
And got 1.
Make sure you are calling the correct view, works on my end.
Level 1
I was just about to write here my final thank you words. But I did final trial after a normal restart. It worked! Thanks for trying for me. This had happened to me before with the system restart thing.
Now I think we have discovered something. With this kind of error Undefined array key 1, ErrorException you cant really see where the error is coming from.
Thanks.
Level 1
No actually, same problem when I try the array with index 3 with this foreach function:
There are two arrays under the $wordsset[3] ,
But I get the same error now. How pity.
@foreach($wordsset[3] as $elements)
{{$elements}}
@foreach
Level 1
Could we escalate this problem somehow?
Undefined array key 1
Level 75
See example here of how I flatten an array, https://gist.github.com/jimgwhit/cbbe5bb0d2556fdc7e37a86d3630239c
edit:
$wordsset = [[1],[[["1"],["1"],["scaun"]]],[[["2"],["1"],["stuhl"]]],[[["3"],["1"],["chair"]],[["4"],["2"],["seat"]]],[[["5"],["la"],["chaise"]]]];
$s = $this->array_flatten($wordsset);
$keys = array_keys($s);
for ($i = 0; $i < count($s); $i++) {
foreach ($s[$keys[$i]] as $key => $value) {
echo $key . " : " . $value . "<br>";
}
echo "-----------------------------------";
echo "<br>";
}
Results:
0 : 1
-----------------------------------
0 : 1
-----------------------------------
0 : 1
-----------------------------------
0 : scaun
-----------------------------------
0 : 2
-----------------------------------
0 : 1
-----------------------------------
0 : stuhl
-----------------------------------
0 : 3
-----------------------------------
0 : 1
-----------------------------------
0 : chair
-----------------------------------
0 : 4
-----------------------------------
0 : 2
-----------------------------------
0 : seat
-----------------------------------
0 : 5
-----------------------------------
0 : la
-----------------------------------
0 : chaise
-----------------------------------
Your loop is not set up correctly.
Or for key3
$s = $this->array_flatten($wordsset[3]); //here
$keys = array_keys($s);
for ($i = 0; $i < count($s); $i++) {
foreach ($s[$keys[$i]] as $key => $value) {
echo $value . "<br>";
}
echo "-----------------------------------";
echo "<br>";
}
Gives:
3
-----------------------------------
1
-----------------------------------
chair
-----------------------------------
4
-----------------------------------
2
-----------------------------------
seat
-----------------------------------
Level 1
Would I be able to separately pick values, when I flatten the array?
Level 75
You could do similar as above and put them into a collection, where there are a bunch of helper methods:
https://laravel.com/docs/8.x/collections
https://laravel.com/docs/8.x/collections#available-methods
Collections are pretty powerful.
Also I'd consider refactoring the array with meaningful key names; ie:
$collection = collect([
['product' => 'Desk', 'price' => 200],
['product' => 'Chair', 'price' => 100],
]);
Just example.
edit
When you have array's in array's and just numbers for keys you end up with things like having to:
$s = $this->array_flatten($wordsset[3]);
echo $s[2][0];
which gives:
chair
If this is an API, you always want consistent nesting in the data. And better key names if possible:
For example from a previous question:
$currencies = '{
"USD": {
"symbol": "$",
"name": "US Dollar",
"symbol_native": "$",
"decimal_digits": 2,
"rounding": 0,
"code": "USD",
"name_plural": "US dollars"
},
"EUR": {
"symbol": "€",
"name": "Euro",
"symbol_native": "€",
"decimal_digits": 2,
"rounding": 0,
"code": "EUR",
"name_plural": "euros"
},
"GBP": {
"symbol": "£",
"name": "British Pound Sterling",
"symbol_native": "£",
"decimal_digits": 2,
"rounding": 0,
"code": "GBP",
"name_plural": "British pounds sterling"
},
"INR": {
"symbol": "Rs",
"name": "Indian Rupee",
"symbol_native": "টকা",
"decimal_digits": 2,
"rounding": 0,
"code": "INR",
"name_plural": "Indian rupees"
}
}';
See the consistency and names make a big difference.
Having things like:
[[["3"],["1"],["chair"]],[["4"],["2"],["seat"]]],
instead of
[["3"],["1"],["chair"]],[["4"],["2"],["seat"]],
To me makes it harder to setup loops.
Level 1
# this solution worked with me :
$todos = $request->user()->todos->groupBy('completed');
$todos[boolval(false)];
$todos[boolval(true)];
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