Error in ArrayHelper::map ?

Yii 2.0 General Discussions
1

The following really has me scratching my head. I have an array, that looks like this when I var_dump it:




array (size=7)

'private' => string '10031' (length=5)

'temp' => string '10030' (length=5)

'joint' => string '10042' (length=5)

'staples' => string '10102' (length=5)

'jointstaples' => string '10043' (length=5)

'mealplan' => string '43' (length=2)

'jointmealplan' => string '105' (length=3)

…so far so good.

But when I use this:




if ($shopping_list_details['joint']) {

    echo "test" ;

}

PHP throws this warning/error:


Undefined index: joint

Here’s the full code below, does it have to with the inner workings perhaps of


ArrayHelper::map

that this won’t work?

Thanks for anyone’s help, I’m really puzzled by this behaviour.




$esluser = \app\models\EarlierShoppingList::find()


        ->select('esl_id, shoppinglist_types.type')

        ->innerJoinwith('type0')

        ->where(['esl_user_id' => $this->user_id])

        ->asArray()

        ->all();


$shopping_list_details =  \yii\helpers\ArrayHelper::map($esluser, 'type', 'esl_id');

var_dump($shopping_list_details);

    if ($shopping_list_details['joint']) {

       echo "ok";

    }

Regards,

Alex

2

You are trying to map two attributes: ‘type’ and ‘esl_id’, while your query is only selecting those two attributes: ‘esl_id’ and ‘shoppinglist_types.type’… thus ‘joint’ is not there and will throw an error.

3

Thanks for your answer. However, the type columns contains either:

private, or:

joint, or:

staples, or:

temp, or:

jointstaples

So the result of the ArrayMapping is:




array (size=7)

'private' => string '10031' (length=5)

'temp' => string '10030' (length=5)

'joint' => string '10042' (length=5)

'staples' => string '10102' (length=5)

'jointstaples' => string '10043' (length=5)

'mealplan' => string '43' (length=2)

'jointmealplan' => string '105' (length=3)

So the key ‘joint’ exists…that’s why I am at such a loss that:




if ($shopping_list_details['joint']) {

    echo "test" ;

}

returns the error…

Hope anyone can shed their light on this, is this is a bug in ArrayHelper::map perhaps or is it a PHP related issue?

Thanks again,

Alex

4

What’s the error you receive?

5

No, it does not exist. Look at the "SELECT" in your query:




->select('esl_id, shoppinglist_types.type')

Only these two attributes are in your result set.

6

@tampaph, the error I actually get is a warning (have strict settings locally) : Undefined index: joint

@Backslider: note that the select query does an inner join, shoppinglist_types.type is only the column name.

If the “joint” index doesn’t exist, why does var_dumping the output of the ArrayHelper indicate it does?

Thanks,

Alex

7

Try to dump the $shopping_list_details keys and check the keys length:


var_dump(array_keys($shopping_list_details));

maybe you have an extra whitespace character after "joint" text what you do not see (space, tab etc.)

8

That was a good idea, however it does just return 5 characters for joint, so that can’t be it:




array (size=7)

  0 => string 'private' (length=7)

  1 => string 'temp' (length=4)

  2 => string 'joint' (length=5)

  3 => string 'staples' (length=7)

  4 => string 'jointstaples' (length=12)

  5 => string 'mealplan' (length=<img src='http://www.yiiframework.com/forum/public/style_emoticons/default/cool.gif' class='bbc_emoticon' alt='8)' />

  6 => string 'jointmealplan' (length=13)

I think I’m going to have to file this as a bug / issue with ArrayHelper, it totally beats me.

Thanks,

Alex

9

Can you paste here the


var_dump($esluser);

result?

10

Yes, it is (excuse the pun):




array (size=5)

  0 => 

    array (size=3)

      'esl_id' => string '10031' (length=5)

      'type' => string 'private' (length=7)

      'type0' => null

  1 => 

    array (size=3)

      'esl_id' => string '10030' (length=5)

      'type' => string 'temp' (length=4)

      'type0' => null

  2 => 

    array (size=3)

      'esl_id' => string '10042' (length=5)

      'type' => string 'joint' (length=5)

      'type0' => null

  3 => 

    array (size=3)

      'esl_id' => string '10102' (length=5)

      'type' => string 'staples' (length=7)

      'type0' => null

  4 => 

    array (size=3)

      'esl_id' => string '10043' (length=5)

      'type' => string 'jointstaples' (length=12)

      'type0' => null