Question

我的应用程序有两个模型，Recipe和RecipeIngredient，与外键相关。每个食谱可能有许多不同的食谱成分（每个食谱有不同数量的相关成分）。因此，使用动态formset为配方分配成分似乎是最好的方法。

我有一个简单的表单，用户输入数量并从下拉列表中选择单位和成分。作为一个独立的表单，它可以正常工作。

不幸的是，我无法将任何包含它的formset提交。

我已经在StackOverflow上搜索了许多不同的formset Q＆amp; As，但是无法看到问题所在。当我点击提交＆＃39;时，表单会闪烁并刷新到位，输入的值仍在表单中。没有创建对象。没有错误报告给控制台或浏览器。相关代码：

模特：

＆＃13;

class RecipeBase(models.Model):
    id = models.UUIDField(primary_key=True,default=uuid.uuid4,null=False)
    name = models.CharField(max_length=128,null=False)
    creation_date = models.DateField("Record creation date",auto_now_add=True)
    creation_user = models.CharField("Record creation user",max_length=150)
    lastupdated_date = models.DateField(auto_now=True)
    lastupdated_user = models.CharField(max_length=150)
    category = models.ForeignKey(RecipeCategory,on_delete=models.CASCADE,related_name='recipes')
    subcategory = models.ForeignKey(RecipeSubcategory,on_delete=models.CASCADE,related_name='recipes')

    def __str__(self):
        return str(self.name)
        
class RecipeIngredient(models.Model):
    id = models.UUIDField(primary_key=True,default=uuid.uuid4,null=False)
    quantity = models.DecimalField(max_digits=8,decimal_places=3,null=False)
    referenced_unit = models.ForeignKey(UnitDetail,on_delete=models.CASCADE)
    referenced_ingredient = models.ForeignKey(Ingredient,on_delete=models.CASCADE)
    parent_recipe = models.ForeignKey(RecipeBase,on_delete=models.CASCADE,related_name='ingredients')

    def __str__(self):
        return str(self.id)[:8]

＆＃13;

要求输入成分：

＆＃13;

<a class='btn btn-success' href="{% url 'recipes:addingredient' pk=recipe_details.pk %}">Add Ingredients</a>

＆＃13;

调用视图：

＆＃13;

class AddIngredientView(CreateView):
    form_class = AddIngredientForm
    model = RecipeIngredient
    template_name = 'addingredientmultiple2.html'
    success_url = "recipes:listrecipes"

    def get_context_data(self, **kwargs):
        parent_recipe_id = RecipeBase.objects.get(id=self.kwargs['pk'])
        data = super(AddIngredientView, self).get_context_data(**kwargs)
        if self.request.POST:
            data['ingredients'] = AddIngredientFormset(self.request.POST)
            data['parent_recipe_id'] = parent_recipe_id
        else:
            data['ingredients'] = AddIngredientFormset()
            data['fixture'] = parent_recipe_id
        return data

    def form_valid(self, form, **kwargs):
        user = self.request.user
        fixture = RecipeBase.objects.get(id=self.kwargs['pk'])
        context = self.get_context_data()
        formset = AddIngredientFormset(self.request.POST)
        if formset.is_valid():
            ingredients = formset.save()
            for recipeingredient in ingredients:
                #recipeingredient.creation_user = str(request.user)
                #recipeingredient.lastupdated_user = str(request.user)
                recipeingredient.parent_recipe_id = parent_recipe_id
                #recipeingredient.user = user
                recipeingredient.save()

        return super(AddIngredientView, self).form_valid(form)

＆＃13;

使用表单和formset：

＆＃13;

class AddIngredientForm(forms.ModelForm):

    quantity = forms.DecimalField(widget=forms.NumberInput(attrs={'data-placeholder': 0.00,'size': '8','label_tag': ''}))
    referenced_unit = forms.ModelChoiceField(queryset=UnitDetail.objects.all())
    referenced_ingredient = forms.ModelChoiceField(queryset=Ingredient.objects.all())

    class Meta():
        model = RecipeIngredient
        fields = ('quantity','referenced_unit','referenced_ingredient',)

AddIngredientFormset = inlineformset_factory(RecipeBase,RecipeIngredient,form=AddIngredientForm,extra=1,can_delete=True)

＆＃13;

模板：

＆＃13;

{{ ingredients.media.css }}

<div class="container">

<h2>Add ingredients to {{ referring_recipe_name }}</h2>
<h4>{{ referring_recipe_id }}</h4>

</div>


<div class="col-md-4">
    <form class="form-horizontal" enctype="multipart/form-data"  method="post">{% csrf_token %}


        <table class="table">
            {{ ingredients.management_form }}

            {% for form in ingredients.forms %}
                {% if forloop.first %}
                    <thead>
                    <tr>
                        {% for field in form.visible_fields %}
                            <th>{{ field.label|capfirst }}</th>
                        {% endfor %}
                    </tr>
                    </thead>
                {% endif %}
                <tr class="formset_row">
                    {% for field in form.visible_fields %}
                        <td>
                            {# Include the hidden fields in the form #}
                            {% if forloop.first %}
                                {% for hidden in form.hidden_fields %}
                                    {{ hidden }}
                                {% endfor %}
                            {% endif %}
                            {{ field.errors.as_ul }}
                            {{ field }}
                        </td>
                    {% endfor %}
                </tr>
            {% endfor %}
        </table>
        <input class='btn btn-success' type="submit" value="Save"/> <a href="{% url 'recipes:listrecipes' %}">back to the list</a>
    </form>
</div>

<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="{% static 'formset/jquery.formset.js' %}"></script>
<script type="text/javascript">
    $('.formset_row').formset({
        addText: 'ADD INGREDIENT',
        deleteText: 'REMOVE',
        prefix: 'ingredients'
    });
</script>

{{ ingredients.media.js }}

＆＃13;

Django inlineformset不会提交

0 个答案: