public function suggestionsForPrograms()
{
$current_user = \Yii::$app->user->identity->getId();
$programsFollowedByCurrentUser = FollowerProgram::find()->where(['user_id' => $current_user])->all();
if (empty($programsFollowedByCurrentUser)) {
$programs = ProgramRecord::find()->all();
$scoresOfEachProgram = [];
$models = [];
foreach ($programs as $program) {
$follows = $program->noOfFollowers;
$likes = $program->noOLikes;
$dislikes = $program->noOfDislikes;
$score = 2 * $follows + $likes - 0.5 * $dislikes;
$scoresOfEachProgram[$program->id] = $score;
}
arsort($scoresOfEachProgram);
foreach (array_keys($scoresOfEachProgram) as $id) {
$program = ProgramRecord::findOne($id);
array_push($models, $program);
}
return $models;
} else {
$targetPrograms = [];
foreach ($programsFollowedByCurrentUser as $followedProgram) {
$allFollowersOfFollowedProgram = FollowerProgram::find()->where(['program_id' => $followedProgram->program_id])->all();
foreach ($allFollowersOfFollowedProgram as $singleFollowerOfFollowee) {
$followeesOfFollowerOfFolloweesOfCurrentUser = FollowerProgram::find()->where(['user_id' => $singleFollowerOfFollowee->user_id])->all();
foreach ($followeesOfFollowerOfFolloweesOfCurrentUser as $targetProgram) {
array_push($targetPrograms, $targetProgram);
}
}
}
$followingProgramsIds = ArrayHelper::getColumn($programsFollowedByCurrentUser, 'program_id');
$targetProgramsIds = ArrayHelper::getColumn($targetPrograms, 'program_id');
$resultProgramsIds = array_diff($targetProgramsIds, $followingProgramsIds);
$countOfPrograms = array_count_values($resultProgramsIds);
$scoresOfEachProgram = [];
foreach (array_unique($resultProgramsIds) as $programId) {
$followersOfProgram = FollowerProgram::find()->where(['program_id' => $programId])->all();
$firstWeight = count($followersOfProgram);
$secondWeight = $countOfPrograms[$programId];
$scoresOfEachProgram[$programId] = ($firstWeight + $secondWeight) / 2;
}
$models = [];
arsort($scoresOfEachProgram);
foreach (array_keys($scoresOfEachProgram) as $id) {
$program = ProgramRecord::findOne($id);
array_push($models, $program);
}
return $models;
}
}
public function actionRemoveoraddfollow()
{
if (Yii::$app->request->isAjax) {
$data = Yii::$app->request->post();
$program_id = $data['program_id'];
$follow_status = $data['follow_status'];
$program = ProgramRecord::findOne($program_id);
if ($follow_status == 'Follow') {
$follow_program = new FollowerProgram();
$follow_program->program_id = $program_id;
$follow_program->user_id = \Yii::$app->user->identity->getId();
if ($follow_program->save()) {
$program->noOfFollowers += 1;
$program->save();
$return_message = 0;
}
} else {
$follow_program = FollowerProgram::findOne(['program_id' => $program_id, 'user_id' => \Yii::$app->user->identity->getId()]);
if ($follow_program->delete()) {
$program->noOfFollowers -= 1;
$program->save();
$return_message = 1;
}
}
return $return_message;
}
}
<?php
$facultyRecord = \common\models\faculty\FacultyRecord::findOne($model->faculty_id);
$faculty = $facultyRecord->name;
$university = \common\models\university\UniversityRecord::findOne($facultyRecord->university_id)->name;
$link_program = '<h5 class="title" style="font-size: 20px;
margin-left: -37%;
margin-top: 10%;">' . $model->name . '</h5>';
echo Html::a($link_program, ['/course/index', 'program_id' => $model->id, 'faculty' => $faculty, 'university' => $university]);
?>
</div>
<div class="col-md-4">
<?php
$follow_status = 'Unfollow';
$btn_follow = '<i class="fa fa-minus-circle"></i>';
$follow_btn_class = '';
if (count(\common\models\FollowerProgram::find()->where(['user_id' => \Yii::$app->user->identity->getId(), 'program_id' => $model->id])->all()) == 0) {
$follow_status = 'Follow';
$btn_follow = '<i class="fa fa-user-plus"></i>';
}
?>
<button type="button" style="" class="btn btn-border-success btn-block btn-follow-program <?php
echo $follow_btn_class;
?>
" id="program-<?php
echo $model->id;
?>
" data-id="<?php
echo $model->id;
?>
" data-follow-status="<?php
echo $follow_status;
