### バリデータ作成
– reがpythonの正規表現モジュール
/hello/models.py
import re
from django.db import models
from django.core.validators import ValidationError
def number_only(value):
if(re.match(r'^[0-9]*$', value) == None):
raise ValidationError(
'%(value)s is not Number!', params={'value': value},
)
class Friend(models.Model):
name = models.CharField(max_length=100, validators=[number_only])
mail = models.EmailField(max_length=200)
gender = models.BooleanField()
age = models.IntegerField()
birthday = models.DateField()
### エラーメッセージ作成
– フォーム全体のエラーメッセージを取り出すにはform.errorsを使う
– フォームの項目からエラーを取り出すことができる
/hello/templates/hello/check.html
<body class="container">
<h1 class="display-4 text-primary">{{title}}</h1>
<p>{{message|safe}}</p>
<ol class="list-group">
{% for item in form %}
<li class="list-group-item py-2">{{ item.name }}{{ item.value }}:{{ item.errors.as_text }}</li>
{% endfor %}
</ol>
<table class="table mt-4">
<form action="{% url 'check' %}" method="post">
{% csrf_token %}
<tr>
<th>名前</th>
<td>{{ form.name }}</td>
</tr>
<tr>
<th>メール</th>
<td>{{ form.mail }}</td>
</tr>
<tr>
<th>性別</th>
<td>{{ form.gender }}</td>
</tr>
<tr>
<th>年齢</th>
<td>{{ form.age }}</td>
</tr>
<tr>
<th>誕生日</th>
<td>{{ form.birthday }}</td>
</tr>
<tr><th></th><td>
<input type="submit" value="click" class="btn btn-primary">
</td></tr>
</form>
</table>
</body>
### ModelFormのカスタマイズ
/hello/forms.py
class FriendForm(forms.ModelForm):
class Meta:
model = Friend
fields = ['name','mail','gender','age','birthday']
widgets = {
'name': forms.TextInput(attrs={'class':'form-control'}),
'mail': forms.EmailInput(attrs={'class':'form-control'}),
'age': forms.NumberInput(attrs={'class':'form-control'}),
'birthday': forms.DateInput(attrs={'class':'form-control'}),
}
/hello/templates/hello/check.html
<body class="container">
<h1 class="display-4 text-primary">{{title}}</h1>
<p>{{message|safe}}</p>
<ol class="list-group mb-4">
{% for item in form %}
<li class="list-group-item py-2">{{ item.name }}{{ item.value }}:{{ item.errors.as_text }}</li>
{% endfor %}
</ol>
<form action="{% url 'check' %}" method="post">
{% csrf_token %}
<div class="form-group">名前{{ form.name }}</div>
<div class="form-group">メール{{ form.mail }}</div>
<div class="form-group">性別{{ form.gender }}</div>
<div class="form-group">年齢{{ form.age }}</div>
<div class="form-group">誕生日{{ form.birthday }}</div>
<div class="form-group">
<input type="submit" value="click" class="btn btn-primary">
</div>
</body>
