Laravel WhereIn查询问题

Question

Here when i echo the $TagDatas; from the below query

$TagDatas = TagModel::whereIn('TagId', explode(',', $BlogData->Tagged))->get(); echo $TagDatas;

I am getting

[{"AutoId":2,"TagId":2,"TagName":"chrome","TagDescription":null,"CreatedAt":null,"CreatedBy":null,"UpdatedAt":null,"UpdatedBy":null,"IsDeletable":null,"Status":1},{"AutoId":3,"TagId":3,"TagName":"google","TagDescription":null,"CreatedAt":null,"CreatedBy":null,"UpdatedAt":null,"UpdatedBy":null,"IsDeletable":null,"Status":1}]

But when i try

echo $TagDatas->TagName;

I am getting Undefined property: Error

What is the mistake i am doing and How can i do it.

Note :

I am using whereIn where the query will be equal to

$BlogData->Tagged i.e., It will be 2,3

So the Query will be

$TagDatas = TagModel::whereIn('TagId', array(2,3))->get();

Answer 1

Because $TagDatas will be a collection . Loop over it to get the individual tags:

foreach($TagDatas as $TagData){
    echo $TagData->TagName;
}

Answer 2

The error is quite obvious.

$TagDatas is a collection of your model . You need to iterate through that collection to get each item. The collection does not have the attribute TagName only its elements(Which are of type TagModel) have it.

So you should do this instead to echo out the TagName of each of them.

foreach($TagDatas as $TagData){
    echo $TagData->TagName;
}