英文:
Django extra_views, ModelFormSetView doesn't save the data
问题
第一个问题：在最后显示了一个空的字段组合。
第二个问题：它不保存数据，没有错误，也没有重定向到成功页面，什么都没有。
你的views.py代码如下：
class UpdateSettings(ModelFormSetView):
model = Settings
fields = ['setting', 'value']
template_name = 'settings.html'
success_url = '/shows'
你的settings.html代码如下：
{% extends 'base.html' %}
{% load crispy_forms_tags %}
{% block content %}
<form method="post">
{% csrf_token %}
{{ formset.management_form }}
{% for form in formset %}
<div class="row">
<div class="col-6">
{{ form.setting|as_crispy_field }}
</div>
<div class="col-6">
{{ form.value|as_crispy_field }}
</div>
</div>
{% endfor %}
<div class="form-group form-actions">
<button class="btn btn-success">Change</button>
</div>
</form>
{% endblock %}
希望这对你有所帮助。如果有任何其他问题，请随时提出。
英文:
I have two problems, i have a flat table with settings in my db, structure is:
setting: char
value: char
It shows the form just fine, but:
First Problem: It shows an empty field combination at the end.
Second problem: It doesn't save the data, no error, no redirect to the success page, nothing.
my views.py:
class UpdateSettings(ModelFormSetView):
model = Settings
fields = ['setting', 'value']
template_name = 'settings.html'
success_url = '/shows'
my settings.html:
{% extends 'base.html' %}
{% load crispy_forms_tags %}
{% block content %}
<form method="post">
{% csrf_token %}
{{ formset.management_form }}
{% for form in formset %}
<div class="row">
<div class="col-6">
{{ form.setting|as_crispy_field }}
</div>
<div class="col-6">
{{ form.value|as_crispy_field }}
</div>
</div>
{% endfor %}
<div class="form-group form-actions">
<button class="btn btn-success">Change</button>
</div>
</form>
{% endblock %}
答案1
得分: 1
你的第一个问题：默认情况下，Django的modelformset_factory（在视图中使用的后台工具）会创建一个额外的空表单。为了避免这个问题，可以在你的视图中添加factory_kwargs：
class UpdateSettings(ModelFormSetView):
model = Settings
fields = ['setting', 'value']
template_name = 'settings.html'
success_url = '/shows'
factory_kwargs = {'extra': 0}
你的第二个问题：我注意到表单集（formset）出现错误，因为'id'字段是必需的。在你的模板中添加'id'字段：
<div class="row">
<div class="col-6">
{{ form.id }}
{{ form.setting|as_crispy_field }}
</div>
<div class="col-6">
{{ form.value|as_crispy_field }}
</div>
</div>
我认为在你的视图中不需要将'id'添加到'fields'中，因为它默认会被添加。
英文:
Your first problem: By default the django modelformset_factory (which the view uses in the background) creates one extra empty form. To avoid this add the factory_kwargs to your view
class UpdateSettings(ModelFormSetView):
model = Settings
fields = ['setting', 'value']
template_name = 'settings.html'
success_url = '/shows'
factory_kwargs = {'extra': 0}
Your second problem: I saw the formset is throwing an error because the 'id' field is required. Add the 'id' to your template:
<div class="row">
<div class="col-6">
{{ form.id }}
{{ form.setting|as_crispy_field }}
</div>
<div class="col-6">
{{ form.value|as_crispy_field }}
</div>
</div>
i don't think 'id' needs to be added to the 'fields' in your view as it is added by default
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