How to Use the Yii2 Compare Validation

Here’s an example of how to use the Yii2 compare validator. The rules go in your model e.g. app/models/Participant.php. In this example, I’m ensuring that the participant_id and the invited_by id are not the same. I don’t want someone to be able to invite themselves. [php] public function rules() { return [ [‘participant_id’, ‘compare’,’compareAttribute’=>’invited_by’,’operator’=>’!=’,’message’=>’You cannot invite […]

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How to Count ActiveDataProvider Items

Here’s how to create an ActiveDataProvider in Yii2 and get a count of records: [php] use yii\data\ActiveDataProvider; $participantProvider = new ActiveDataProvider([ ‘query’ => Participant::find()->where([‘meeting_id’=>$id]), ]); echo $participantProvider->getCount(); [/php]

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Dropdown Menus for Navigation Bar

Yii2 uses short array notation extensively. Once you get used to it, it’s great, but it can take a bit of time to read code blocks with it. When arrays are nested, it can be even more confusing. I found the Bootstrap navigation bar layouts to be hard to read. I also couldn’t easily find […]

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