i have a form where i can create football match. there are 3 fields home team (drop down list, where user selects a team), away team(also drop down list) and score field. so <option> tag value equals team_id.
for example, i can choose home team juventus, away team milan and score 2:2. problem is, i should validate if home team not equals to away team, so user shouldn't create football match team against itself, for example juventus vs juventus. how should i validate these fields(home_team, away_team) not equal to each other?
rules method
public function rules()
{
return [
[['score'], 'required'],
['home_team_id', 'required', 'message' => 'Please choose a home team'],
['away_team_id', 'required', 'message' => 'Please choose a away team'],
['score', 'match', 'pattern' => '/^\d{1,2}(:\d{1,2})?$/'],
['home_team_id', 'compare', 'compareValue' => 'away_team_id', 'operator' => '!=', 'message' => 'Please choose a different teams'],
[['away_team_id'], 'exist', 'skipOnError' => true, 'targetClass' => Team::className(), 'targetAttribute' => ['away_team_id' => 'id']],
[['home_team_id'], 'exist', 'skipOnError' => true, 'targetClass' => Team::className(), 'targetAttribute' => ['home_team_id' => 'id']],
[['round_id'], 'exist', 'skipOnError' => true, 'targetClass' => Round::className(), 'targetAttribute' => ['round_id' => 'id']],
];
}
my form
<?php $form = ActiveForm::begin(); ?>
<?= $form->field($model, 'home_team_id')->dropDownList($items, $params)->label('Home Team');?>
<?= $form->field($model, 'away_team_id')->dropDownList($items, $params)->label('Away Team');?>
<div class="hidden">
<?= $form->field($model, 'round_id')->hiddenInput()->label(''); ?>
</div>
<?= $form->field($model, 'score')->textInput([
'maxlength' => true,
'placeholder' => 'seperate goals with colon, for example 2:1'
]) ?>
<div class="form-group">
<?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>
<?php ActiveForm::end(); ?>
$items array contains teams(names and ids)
