How do I hide the field label for a HiddenInput wi

问题:

I've got a bit of Django form code that looks like this:

class GalleryAdminForm(forms.ModelForm):
    auto_id=False
    order = forms.CharField(widget=forms.HiddenInput())

And that makes the form field go away, but it leaves the label "Order" in the Django admin page. If I use:

order = forms.CharField(widget=forms.HiddenInput(), label='')

I'm still left with the ":" between where the field and label used to be.

How do I hide the whole thing?!

回答1:

If you're using JQuery this should do the trick:

Your form

TO_HIDE_ATTRS = {'class': 'hidden'}
class GalleryAdminForm(forms.ModelForm):
    auto_id=False
    order = forms.CharField(widget=forms.TextInput(attrs=TO_HIDE_ATTRS))

Javascript code to add to your template

$(document).ready(function(){
    $('tr:has(.hidden)').hide();
});

That works if you're rendering your form as a table. If you want to make it work with any kind of form rendering you can do as follows:

$(document).ready(function(){
    $('{{ form_field_container }}:has(.hidden)').hide();
});

And add form_field_container to your template context. An example:

If you render your form like this:

    <form>
        <span>{{ field.label_tag }} {{ field }}</span>
    </form>

Your context must include:

'form_field_container': 'span'

You get the idea...

回答2:

Oraculum has got it right. You shouldn't be cleaning this up on the client side. If it is clutter, then you shouldn't be sending it to client at all. Building on Oraculum's answer, you should use a custom form template because you you probably still want the hidden values in the form.

{% for field in form.visible_fields %}
    <div>
        {{ field.errors }}
        <span class="filter-label">{{ field.label_tag }}</span><br>
        {{ field }}
    </div>
 {% endfor %}

 {% for field in form.hidden_fields %}
     <div style="display:none;">{{ field }}</div>
 {% endfor %}

Using a custom form template to control hidden fields is cleaner because it doesn't send extraneous info to the client.

回答3:

I can't believe several people have suggested using jQuery for this...

Is it a case of: when the only tool you know is a hammer everything looks like a nail?

Come on, if you're going to do it from the client-side (instead of fixing the source of the problem in the back-end code) surely the right place to do it would be in CSS?

If you're in the admin site then it's a bit harder but if it's a regular page then it's easy to just omit the whole label from the form template, for example

If you're in the admin site then you could still override the as_table, as_ul, as_p methods of BaseForm (see django/forms/forms.py) in your GalleryAdminForm class to omit the label of any field where the label is blank (or == ':' as the value may be at this stage of rendering)

(...looking at lines 160-170 of forms.py it seems like Django 1.2 should properly omit the ':' if the label is blank so I guess you're on an older version?)

回答4:

Try

{% for field in form.visible_fields %}

回答5:

I think it's simpler to achieve the ":" label omission for HiddenInput widget by modifying class AdminField(object) in contrib/admin/helpers.py from :

    if self.is_checkbox:
        classes.append(u'vCheckboxLabel')
        contents = force_unicode(escape(self.field.label))
    else:
        contents = force_unicode(escape(self.field.label)) + u':'

to :

    if self.is_checkbox:
        classes.append(u'vCheckboxLabel')
        contents = force_unicode(escape(self.field.label))
    else:            
        contents = force_unicode(escape(self.field.label))
        #MODIFIED 26/10/2009
        if self.field.label <> '':
           contents += u':'
        # END MODIFY

回答6:

Check the answer at Create a hidden field in the admin site, it can be done without JavaScript by overriding admin/includes/fieldset.html From there, you can inject a CSS class, and do the rest.

回答7:

In theory, you should be able to pass label_suffix into the form constructor. However, the Django admin ignores this.

You've been bitten by two bugs in Django: #18134 'BoundField.label_tag should include form.label_suffix' (fixed in trunk, should be in 1.6) and to a lesser extent #11277 Hidden fields in Inlines are displayed as empty rows.

Currently, the best solution is to override the admin fieldset template. Use a HiddenInput for your widget, then override the admin fieldset template (documented here). Just create a templates/admin/includes/fieldset.html with the following contents:

<fieldset class="module aligned {{ fieldset.classes }}">
    {% if fieldset.name %}<h2>{{ fieldset.name }}</h2>{% endif %}
    {% if fieldset.description %}
        <div class="description">{{ fieldset.description|safe }}</div>
    {% endif %}
    {% for line in fieldset %}
        <div class="form-row{% if line.fields|length_is:'1' and line.errors %} errors{% endif %}{% for field in line %}{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% endfor %}">
            {% if line.fields|length_is:'1' %}{{ line.errors }}{% endif %}
            {% for field in line %}
                <div{% if not line.fields|length_is:'1' %} class="field-box{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}"{% endif %}>
                    {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %}
                    {% if field.is_checkbox %}
                        {{ field.field }}{{ field.label_tag }}
                    {% else %}
                        {# only show the label for visible fields #}
                        {% if not field.field.is_hidden %}
                        {{ field.label_tag }}
                        {% endif %}

                        {% if field.is_readonly %}
                            <p>{{ field.contents }}</p>
                        {% else %}
                            {{ field.field }}
                        {% endif %}
                    {% endif %}
                    {% if field.field.help_text %}
                        <p class="help">{{ field.field.help_text|safe }}</p>
                    {% endif %}
                </div>
            {% endfor %}
        </div>
    {% endfor %}
</fieldset>

回答8:

Based upon the solution by Wilfried Hughes I 've changed the fieldset.html with little improvements.

The code snippet below not only hides the input element instead if the fieldset contains only one single element which input-type is set to hidden it also hides the surrounding div-elements wasting no space in the form.

<fieldset class="module aligned {{ fieldset.classes }}">
{% if fieldset.name %}<h2>{{ fieldset.name }}</h2>{% endif %}
{% if fieldset.description %}
    <div class="description">{{ fieldset.description|safe }}</div>
{% endif %}
{% for line in fieldset %}
    <div class="form-row{% if line.fields|length_is:'1' and line.errors %} errors{% endif %}{% for field in line %}{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% endfor %}"{% if line.fields|length_is:'1' %}{% for field in line %}{% if field.field.is_hidden %} style="display: none"{% endif %}{% endfor %}{% endif %}>
        {% if line.fields|length_is:'1' %}{{ line.errors }}{% endif %}
        {% for field in line %}
            <div{% if not line.fields|length_is:'1' %} class="field-box{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}"{% endif %}{% if field.field.is_hidden %} style="display: none"{% endif %}>
                {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %}
                {% if field.is_checkbox %}
                    {{ field.field }}{{ field.label_tag }}
                {% else %}
                    {# only show the label for visible fields #}
                    {% if not field.field.is_hidden %}
                    {{ field.label_tag }}
                    {% endif %}

                    {% if field.is_readonly %}
                        <p>{{ field.contents }}</p>
                    {% else %}
                        {{ field.field }}
                    {% endif %}
                {% endif %}
                {% if field.field.help_text %}
                    <p class="help">{{ field.field.help_text|safe }}</p>
                {% endif %}
            </div>
        {% endfor %}
    </div>
{% endfor %}

回答9:

The following removes the ':' from all your form fields. I've only tried it with the forms.Form class, but I believe it should work for forms.ModelForm too.

In Django forms, the ':' after the labels is the label_suffix. You can change or remove the label_suffix by creating a subclass of ModelForm, here called UnstyledForm, and redefining the initialization function with label_suffix set to an empty string. Then use your new UnstyledForm class.

class UnstyledForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        kwargs.setdefault('label_suffix', '')
        super(UnstyledForm, self).__init__(*args, **kwargs)

class GalleryAdminForm(UnstyledForm):
    auto_id=False
    order = forms.CharField(widget=forms.HiddenInput())

I hope that helps!

回答10:

Another way to do it, but i think it still better to iterate form.visible_fields & form.hidden_fields

<form action="{% url 'some_url' param %}" method="POST">
    {% csrf_token %}
    <div class="row">
        {% for field in form %}

            {% if not field.is_hidden %}
                <div class="col-md-6">
                    {{ field.label_tag }}
                    {{ field.error }}
                    {{ field }}
                </div>
            {% else %}
                {{ field }}
            {% endif %}
        {% endfor %}
     </div>
</form>