验证两个字段不应该彼此相等yii2

Question

我有一个表格，我可以创建足球比赛。有3个字段home team（下拉列表，用户选择一个团队），away team（也是下拉列表）和得分字段。所以<option>标签值等于team_id。

例如，我可以选择主队juventus，客队milan和得分2:2。问题是，我应该验证主队是否不等于客队，因此用户不应该创建足球比赛队伍，例如juventus vs juventus。我应该如何验证这些字段（home_team，away_team）彼此不相等？

规则方法

 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']],
    ];
  }

我的表格

<?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数组包含团队（名称和ID）

Answer 1

另一答案