Django 覆盖内联表单集上的保存
Django overriding Save on inline formset
我现在已经变成僵尸了，我在等着有人来打我然后哄我睡觉。我知道这很简单，因为我是 django 和 python 的新手，所以我做错了。
我希望模型 FK 字段呈现为文本字段..简单易行（不是 linux OS）...对吗？
我不这么认为...
好吧，我在 SO
上找到了一个解决方案
但是，唉，它对我不起作用，我试了又试了……等等……
我把我的代码放在这里，如果有人为了神圣或邪恶的缘故可以帮助我解决这个问题，另外如果可能的话提供一些文档以便我将来可以学习如何自己做这些事情（也教我如何抓鱼）...我将不胜感激，主将沐浴his/her祝福你。
models.py
class Recipe(models.Model):
''' Add/update recipes. User and Guests can update the recipes.
Requires admin approval for posting recipes unless user is
has some privileges. '''
user = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, blank=True)
title = models.CharField(max_length=50, verbose_name=_('Recipe|title'))
summary = models.CharField(max_length=500, blank=True, verbose_name=_('Recipe|summary'))
description = models.TextField(blank=True, verbose_name=_('Recipe|description'))
slug = models.SlugField(unique=True, max_length=50, null=False, blank=False)
prep_time = models.CharField(max_length=100, blank=True) # This field type is a guess.
ctime = models.DateTimeField(auto_now_add=True)
mtime = models.DateTimeField(auto_now=True)
sources = models.ManyToManyField(Source, blank=True)
category = models.ForeignKey(Category)
serving_string = models.ForeignKey(ServingString, null=True, blank=True)
serving_value = models.IntegerField(null=True, blank=True)
DIFFICULTY = Choices((0, 'easy', 'Easy'), (1, 'medium', 'Medium'), (3, 'hard', 'Hard'))
difficulty = models.IntegerField(choices=DIFFICULTY)
tag = TaggableManager(help_text="A comma separated list of tags")
class Ingredient(models.Model):
amount = models.FloatField(null=True, blank=True, verbose_name=_('Ingredient|amount'))
amountMax = models.FloatField(null=True, blank=True)
unit = models.ForeignKey(Unit, null=True, blank=True)
recipe = models.ForeignKey(Recipe)
food = models.ForeignKey(Food)
prep_method = models.ForeignKey(PrepMethod, null=True, blank=True)
order_index = PositionField(blank=True, null=True, unique_for_field="direction")
direction = models.ForeignKey(Direction, related_name='ingredients', null=True, blank=True)
class Food(models.Model):
name = models.CharField(max_length=150, verbose_name=_('Food|name'))
name_sorted = models.CharField(max_length=150, default='', verbose_name=_('Food|name_sorted'))
group = models.ForeignKey(FoodGroup, null=True, blank=True)
conversion_src_unit = models.ForeignKey(Unit, related_name='+', null=True, blank=True)
conversion_factor = models.FloatField(null=True, blank=True)
name_plural = models.CharField(max_length=150, null=True, blank=True)
detail = models.TextField(blank=True)
in_foodguide = models.BooleanField(default=True)
forms.py
class RecipeForm(forms.ModelForm):
class Meta:
model = Recipe
fields = ['title', 'summary', 'description', 'prep_time', 'sources',
'category','serving_string', 'serving_value','difficulty', 'tag']
class DirectionForm(forms.ModelForm):
class Meta:
model = Direction
fields = ['text', ]
class FoodForm(forms.ModelForm):
class Meta:
model = Food
exclude = ['name', 'name_sorted', 'group', 'conversion_src_unit',
'conversion_factor', 'name_plural', 'detail', 'in_foodguide']
class IngredientForm(forms.ModelForm):
food_name = forms.CharField(required=True)
class Meta:
model = Ingredient
# fields = ['amount', 'amountMax', 'unit', 'prep_method', 'food_name']
exclude = ('food',)
def __init__(self, *args, **kwargs):
super(IngredientForm, self).__init__(*args, **kwargs)
print 'instance', self.instance
if self.instance and not self.data:
try:
self.initial['food_name'] = self.instance.food.name
# I added the try block else it RelatedObjectDOesNotExist Error occured.
# Ingredient has no food
except:
pass
def save(self, commit=True):
food_name = self.cleaned_data['food_name']
name, _ = Food.objects.get_or_create(name=food_name)
# I printed self.save and it goes into infinite loop.
instance = self.save(commit=False)
instance.name = name
if commit == True:
instance.save()
return instance
forms.py - 定义内联表单集
DirInline = inlineformset_factory(Recipe, Direction, form=DirectionForm, extra=1)
IngInline = inlineformset_factory(Recipe, Ingredient, form=IngredientForm, extra=1)
views.py
def submit_recipe(request):
recipe_form = RecipeForm()
dir_formset = DirInline(instance=Recipe())
ing_formset = IngInline(instance=Recipe())
if request.method == 'POST':
recipe_form = RecipeForm(request.POST or None)
if recipe_form.is_valid():
recipe = recipe_form.save(commit=False)
dir_formset = DirInline(request.POST or None, request.FILES, instance=recipe)
ing_formset = IngInline(request.POST or None, request.FILES, instance=recipe)
if dir_formset.is_valid() and ing_formset.is_valid():
recipe.save()
dir_formset.save()
ing_formset.save()
return HttpResponseRedirect(reverse('submit_recipe'))
else:
return render(request, 'recipes-orig/submit_recipe.html',
{'recipe_form':recipe_form,
'dir_formset':dir_formset,
'ing_formset':ing_formset})
return render(request, 'recipes-orig/submit_recipe.html',
{'recipe_form':recipe_form,
'dir_formset':dir_formset,
'ing_formset':ing_formset
})
如果觉得代码冗长消化快我会做一个简单的版本
红薯！！我知道我在做一些愚蠢的事情..事实证明我应该在 save 中调用 super 而我没有...这是代码...但是如果可以的话请给我参考一些文档。
forms.py
def save(self, commit=True):
food_name = self.cleaned_data['food_name']
name, _ = Food.objects.get_or_create(name=food_name)
instance = super(IngredientForm, self).save(commit=False)
instance.food = name
if commit:
instance.save()
return instance
我现在已经变成僵尸了，我在等着有人来打我然后哄我睡觉。我知道这很简单，因为我是 django 和 python 的新手，所以我做错了。
我希望模型 FK 字段呈现为文本字段..简单易行（不是 linux OS）...对吗？
我不这么认为...
好吧，我在 SO
但是，唉，它对我不起作用，我试了又试了……等等……
我把我的代码放在这里，如果有人为了神圣或邪恶的缘故可以帮助我解决这个问题，另外如果可能的话提供一些文档以便我将来可以学习如何自己做这些事情（也教我如何抓鱼）...我将不胜感激，主将沐浴his/her祝福你。
models.py
class Recipe(models.Model):
''' Add/update recipes. User and Guests can update the recipes.
Requires admin approval for posting recipes unless user is
has some privileges. '''
user = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, blank=True)
title = models.CharField(max_length=50, verbose_name=_('Recipe|title'))
summary = models.CharField(max_length=500, blank=True, verbose_name=_('Recipe|summary'))
description = models.TextField(blank=True, verbose_name=_('Recipe|description'))
slug = models.SlugField(unique=True, max_length=50, null=False, blank=False)
prep_time = models.CharField(max_length=100, blank=True) # This field type is a guess.
ctime = models.DateTimeField(auto_now_add=True)
mtime = models.DateTimeField(auto_now=True)
sources = models.ManyToManyField(Source, blank=True)
category = models.ForeignKey(Category)
serving_string = models.ForeignKey(ServingString, null=True, blank=True)
serving_value = models.IntegerField(null=True, blank=True)
DIFFICULTY = Choices((0, 'easy', 'Easy'), (1, 'medium', 'Medium'), (3, 'hard', 'Hard'))
difficulty = models.IntegerField(choices=DIFFICULTY)
tag = TaggableManager(help_text="A comma separated list of tags")
class Ingredient(models.Model):
amount = models.FloatField(null=True, blank=True, verbose_name=_('Ingredient|amount'))
amountMax = models.FloatField(null=True, blank=True)
unit = models.ForeignKey(Unit, null=True, blank=True)
recipe = models.ForeignKey(Recipe)
food = models.ForeignKey(Food)
prep_method = models.ForeignKey(PrepMethod, null=True, blank=True)
order_index = PositionField(blank=True, null=True, unique_for_field="direction")
direction = models.ForeignKey(Direction, related_name='ingredients', null=True, blank=True)
class Food(models.Model):
name = models.CharField(max_length=150, verbose_name=_('Food|name'))
name_sorted = models.CharField(max_length=150, default='', verbose_name=_('Food|name_sorted'))
group = models.ForeignKey(FoodGroup, null=True, blank=True)
conversion_src_unit = models.ForeignKey(Unit, related_name='+', null=True, blank=True)
conversion_factor = models.FloatField(null=True, blank=True)
name_plural = models.CharField(max_length=150, null=True, blank=True)
detail = models.TextField(blank=True)
in_foodguide = models.BooleanField(default=True)
forms.py
class RecipeForm(forms.ModelForm):
class Meta:
model = Recipe
fields = ['title', 'summary', 'description', 'prep_time', 'sources',
'category','serving_string', 'serving_value','difficulty', 'tag']
class DirectionForm(forms.ModelForm):
class Meta:
model = Direction
fields = ['text', ]
class FoodForm(forms.ModelForm):
class Meta:
model = Food
exclude = ['name', 'name_sorted', 'group', 'conversion_src_unit',
'conversion_factor', 'name_plural', 'detail', 'in_foodguide']
class IngredientForm(forms.ModelForm):
food_name = forms.CharField(required=True)
class Meta:
model = Ingredient
# fields = ['amount', 'amountMax', 'unit', 'prep_method', 'food_name']
exclude = ('food',)
def __init__(self, *args, **kwargs):
super(IngredientForm, self).__init__(*args, **kwargs)
print 'instance', self.instance
if self.instance and not self.data:
try:
self.initial['food_name'] = self.instance.food.name
# I added the try block else it RelatedObjectDOesNotExist Error occured.
# Ingredient has no food
except:
pass
def save(self, commit=True):
food_name = self.cleaned_data['food_name']
name, _ = Food.objects.get_or_create(name=food_name)
# I printed self.save and it goes into infinite loop.
instance = self.save(commit=False)
instance.name = name
if commit == True:
instance.save()
return instance
forms.py - 定义内联表单集
DirInline = inlineformset_factory(Recipe, Direction, form=DirectionForm, extra=1)
IngInline = inlineformset_factory(Recipe, Ingredient, form=IngredientForm, extra=1)
views.py
def submit_recipe(request):
recipe_form = RecipeForm()
dir_formset = DirInline(instance=Recipe())
ing_formset = IngInline(instance=Recipe())
if request.method == 'POST':
recipe_form = RecipeForm(request.POST or None)
if recipe_form.is_valid():
recipe = recipe_form.save(commit=False)
dir_formset = DirInline(request.POST or None, request.FILES, instance=recipe)
ing_formset = IngInline(request.POST or None, request.FILES, instance=recipe)
if dir_formset.is_valid() and ing_formset.is_valid():
recipe.save()
dir_formset.save()
ing_formset.save()
return HttpResponseRedirect(reverse('submit_recipe'))
else:
return render(request, 'recipes-orig/submit_recipe.html',
{'recipe_form':recipe_form,
'dir_formset':dir_formset,
'ing_formset':ing_formset})
return render(request, 'recipes-orig/submit_recipe.html',
{'recipe_form':recipe_form,
'dir_formset':dir_formset,
'ing_formset':ing_formset
})
如果觉得代码冗长消化快我会做一个简单的版本
红薯！！我知道我在做一些愚蠢的事情..事实证明我应该在 save 中调用 super 而我没有...这是代码...但是如果可以的话请给我参考一些文档。
forms.py
def save(self, commit=True):
food_name = self.cleaned_data['food_name']
name, _ = Food.objects.get_or_create(name=food_name)
instance = super(IngredientForm, self).save(commit=False)
instance.food = name
if commit:
instance.save()
return instance