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# -*- coding: utf-8 -*-
#
from django import forms
from django.utils.translation import gettext_lazy as _
from ..models import Label, Asset
__all__ = ['LabelForm']
class LabelForm(forms.ModelForm):
assets = forms.ModelMultipleChoiceField(
queryset=Asset.objects.none(), label=_('Asset'), required=False,
widget=forms.SelectMultiple(
attrs={'class': 'select2', 'data-placeholder': _('Select assets')}
)
)
class Meta:
model = Label
fields = ['name', 'value', 'assets']
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.set_fields_queryset()
def set_fields_queryset(self):
assets_field = self.fields.get('assets')
# 没有data代表是渲染表单, 有data代表是提交创建/更新表单
if not self.data:
# 有instance 代表渲染更新表单, 否则是创建表单
# 前端渲染优化, 防止过多资产, 设置assets queryset为none
if self.instance:
assets_field.initial = self.instance.assets.all()
assets_field.queryset = self.instance.assets.all()
else:
assets_field.queryset = Asset.objects.none()
else:
assets_field.queryset = Asset.objects.all()
def save(self, commit=True):
label = super().save(commit=commit)
assets = self.cleaned_data['assets']
label.assets.set(assets)
return label