Django - Model Form筆記

使筆記將紀錄使用Model Form，Model Form直接的與Form做連接，來達成驗證。

操作前務必import以下：

form django import forms

form mapp.models import MyModel

P.S:我們將使用Meta class，實作ModelForm

ModelForm操作案例：

1. show model中全部的欄位，使用__all__

class MyForm(models.ModelForm):

class Meta:

model = MyForm()

fields = "__all__"

2. 排除特定欄位，使用exclude

class MyForm(models.ModelForm):

class Meta:

model = MyForm()

exclude = ["field1", "field2", "field3"]

3. 指定特定欄位

class MyForm(models.ModelForm):

class Meta:

model = MyForm()

fields = ("field1", "field2", "field3")

如想要客制驗證，可以直接寫在Form class裡

class MyForm(models.ModelForm):

        # 加在這 name = froms.CharField(...)

class Meta:

model = MyForm()

fields = ("field1", "field2", "field3")

# 更改Modelform field 屬性
        widgets = {
            'field1': forms.TextInput(attrs={'class': 'textinputclass'}),
            'field2': forms.Textarea(attrs={'class': 'editable medium-editor-textarea postcontent'}),
        }

現在我們將進行ModelForm實作，假設我們已經有一個User Model，現在要製作一個輸入User Model頁面

1. 設定form.py

class MyModelForm(forms.ModelForm):

class Meta():

model = User

fields = '__all__'

2. 設定templates

<form method="POST">

{{ form.as_p }}

{% csrf_token %}

<input type="submit" value="Submit">

</form>

3. 設定views.py

from form import MyModelForm

def model_form_name_view(request):

form = forms.MyModelForm()

if request.method == 'POST':

form = MyModelForm(request.POST)

if form.is_valid():

form.save(commit=True) # exection, same as form.save()

return index(request)

else:

print('ERROR FORM INVALID')

return render(request, 'myapp/model_form_page.html', {'form' : form})

4. 設定urls.py

完成



隱藏內建User model  help_text 訊息

# form.py

from django.contrib.auth.models import User

class UserForm(forms.ModelForm):

password = forms.CharField(widget=forms.PasswordInput())

class Meta():
model = User
help_texts = {
'username': None, # 取消掉
                }
fields = ('username', 'email', 'password')

完成