title: Passing Extra Parameters in Vuetify Rules Definition
body: <p>My goal is to define my rules once and then reuse them for all of my fields. To do this, I need to pass extra parameters to my rules, like maxlength of 20 on one v-text-field, but a maxlength of 50 on another. From what I see, only the value is getting passed. How can I add extra parameters to my rules?</p>
  
  <pre><code>&lt;template&gt;
    &lt;v-input :rules=[rules.max(20)] v-model="field1" /&gt;
    &lt;v-input :rules=[rules.max(50)] v-model="field2" /&gt;
  &lt;/template&gt;
  &lt;script&gt;    
    data() {
      rules: {
        max(v, maxnum) { //maxnum is the parameter I want to add so that I can pass different values and reuse the same rule on multiple fields
          return (v || '').length &lt;= maxnum || 'Max exceeded';
        }
      }
    }
  &lt;/script&gt;
  </code></pre>