You can get the ID like this:

    {{ field.auto_id }}

You can also use [`id_for_label`][1]:

    {{ field.id_for_label }}


  [1]: https://docs.djangoproject.com/en/stable/ref/forms/api/#django.forms.BoundField.id_for_label

This doesn&#39;t work for every form field.

For instance `{{ form.address.auto_id }}` works while `{{ form.address.auto_name }}` will not.

However you can use `{{ form.address.html_name }}` to get the equivalent answer.

Here are the &lt;a href=&quot;https://docs.djangoproject.com/en/dev/topics/forms/&quot;&gt;docs&lt;/a&gt;

In Django 2 you can retrieve the ID for a specific field using `{{ field.id_for_label }}`

This is documented [here][1].


  [1]: https://docs.djangoproject.com/en/2.1/topics/forms/#looping-over-the-form-s-fields

From the documentation-

&gt; each form field has an ID attribute set to  `id_&lt;field-name&gt;`
&gt; , which is referenced by the accompanying label tag. This is important in ensuring that forms are accessible to assistive technology such as screen reader software. You can also customize the way in which labels and ids are generated.

So I would like to say `id_field-name` , you collect the field name from the model.

Here is the link to [the documentation](https://docs.djangoproject.com/en/3.2/topics/forms/#working-with-form-templates)




I am working with Django and use Django shell all the time. The annoying part is that while the Django server reloads on code changes, the shell does not, so every time I make a change to a method I am testing, I need to quit the shell and restart it, re-import all the modules I need, reinitialize all the variables I need etc. While iPython history saves a lot of typing on this, this is still a pain. Is there a way to make django shell auto-reload, the same way django development server does?

I know about reload(), but I import a lot of models and generally use `from app.models import *` syntax, so reload() is not much help.

How to reload modules in django shell?

In my application I need to convert clojure keyword eg. :var_name into a string &quot;var_name&quot;. Any ideas how that could be done?

How to convert a clojure keyword into a string?

Is there any way to get the id of a field in a template?

In the HTML I get: `&lt;input name=&quot;field_name&quot; id=&quot;id_field_name&quot;...`

I know I can get the name with `{{ field.html_name }}`, but is there anything similar for getting the id?  
Or can I only get it like this: `id_{{ field.html_name }}`?

How to get form fields&#39; id in Django

Is there any way to get the id of a field in a template?
In the HTML I get: <code>&#x3C;input name="field_name" id="id_field_name"...</code>
I know I can get the name with <code>{{ field.html_name }}</code>, but is there anything similar for getting the id? 
Or can I only get it like this: <code>id_{{ field.html_name }}</code>?

Is possible to add GET variables in a redirect ? (Without having to modifiy my urls.py) 

If I do `redirect(&#39;url-name&#39;, x)`

I get `HttpResponseRedirect(&#39;/my_long_url/%s/&#39;, x)`

I don&#39;t have complains using `HttpResponseRedirect(&#39;/my_long_url/%s/?q=something&#39;, x)` instead, but just wondering...

add request.GET variable using django.shortcuts.redirect

Let&#39;s say I have an abstract base class that looks like this:

    class StellarObject(BaseModel):
      title = models.CharField(max_length=255)
      description = models.TextField()
      slug = models.SlugField(blank=True, null=True)

      class Meta:
        abstract = True

Now, let&#39;s say I have two actual database classes that inherit from StellarObject

    class Planet(StellarObject):
      type = models.CharField(max_length=50)
      size = models.IntegerField(max_length=10)

    class Star(StellarObject):
      mass = models.IntegerField(max_length=10)

So far, so good.  If I want to get Planets or Stars, all I do is this:

    Thing.objects.all() #or
    Thing.objects.filter() #or count(), etc...

But what if I want to get ALL StellarObjects?  If I do:

    StellarObject.objects.all()

It of course returns an error, because an abstract class isn&#39;t an actual database object, and therefore cannot be queried.  Everything I&#39;ve read says I need to do two queries, one each on Planets and Stars, and then merge them.  That seems horribly inefficient.  Is that the only way?

How to query abstract-class-based objects in Django?

I would like to compare a date to the current date in Django, preferably in the template, but it is also possible to do before rendering the template. If the date has already passed, I want to say &quot;In the past&quot; while if it is in the future, I want to give the date.

I was hoping one could do something like this:

    {% if listing.date &lt;= now %} 
         In the past 
    {% else %} 
         {{ listing.date|date:&quot;d M Y&quot; }} 
    {% endif %}

With now being today&#39;s date, but this does not work. I couldn&#39;t find anything about this in the Django docs. Can anyone give some advice?

How to compare dates in Django templates

I&#39;ve heard of redis-cache but how exactly does it work? Is it used as a layer between django and my rdbms, by caching the rdbms queries somehow? 

Or is it supposed to be used directly as the database? Which I doubt, since that github page doesn&#39;t cover any login details, no setup.. just tells you to set some config property.

How can I use redis with Django?

My model has quite a few boolean fields. I&#39;ve broken these up into 3 sets which I&#39;m rendering as a `MultipleChoiceField` w/ a modified `CheckboxSelectMultiple`.

Now I need to save this data back to the DB. i.e., I need to split the data returned by a single widget into multiple boolean columns. I think this is appropriate for the `save()` method, **no?**

Question is, how do I do I do it? Something like this?

    def save(self, commit=True):
        # code here
        return super(MyForm, self).save(commit)

If so... **how do I set the values?**

    self.fields[&#39;my_field&#39;].value = &#39;my_flag&#39; in self.cleaned_data[&#39;multi_choice&#39;]

Or something? **Where&#39;s all the data stored?**

Django: How to override form.save()?

Take this very simple form for example:

    class SearchForm(Form):
        q = forms.CharField(label=&#39;search&#39;)

This gets rendered in the template:

&lt;!-- language: lang-html --&gt;

    &lt;input type=&quot;text&quot; name=&quot;q&quot; id=&quot;id_q&quot; /&gt;

However, I want to add the `placeholder` attribute to this field with a value of `Search` so that the HTML would look something like:

&lt;!-- language: lang-html --&gt;

    &lt;input type=&quot;text&quot; name=&quot;q&quot; id=&quot;id_q&quot; placeholder=&quot;Search&quot; /&gt;

Preferably I would like to pass the placeholder value in to `CharField` in the form class through a dictionary or something like:

    q = forms.CharField(label=&#39;search&#39;, placeholder=&#39;Search&#39;)


What would be the best way to accomplish this?

How do I add a placeholder on a CharField in Django?

I have a [DateTimeField][2] field in my model. I wanted to display it as a checkbox widget in the Django admin site. To do this, I created a custom form widget. However, I do not know how to use my custom widget for **only** this one field.

The [Django documentation][3] explains how to use a custom widget for **all** fields of a certain type:

    class StopAdmin(admin.ModelAdmin):
        formfield_overrides = {
            models.DateTimeField: {&#39;widget&#39;: ApproveStopWidget }
        }

This is not granular enough though. I want to change it for only **one** field.

  [1]: http://stackoverflow.com/questions/3480098/how-customize-one-field-on-the-django-admin-interface
  [2]: https://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.DateTimeField
  [3]: https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.formfield_overrides

Django Admin: Using a custom widget for only one model field

I am trying to make a search form for one of my classes. The model of the form is:

    from django import forms
    from django.forms import CharField, ModelMultipleChoiceField, ModelChoiceField
    from books.models import Book, Author, Category
     
    class SearchForm(forms.ModelForm):
        authors = ModelMultipleChoiceField(queryset=Author.objects.all(),required=False)    
        category = ModelChoiceField (queryset=Category.objects.all(),required=False)
        class Meta:
            model = Book
            fields = [&quot;title&quot;]

And the view I&#39;m using is:

    from django.shortcuts import render_to_response, redirect, get_object_or_404
    from django.template import RequestContext
    from books.models import Book,Author
    from books.forms import BookForm, SearchForm
    from users.models import User
     
    def search_book(request):
        if request.method == &quot;POST&quot;:
            form = SearchForm(request.POST)
            if form.is_valid():
                form = SearchForm(request.POST)
                stitle = form.cleaned_data[&#39;title&#39;]
                sauthor = form.cleaned_data[&#39;author&#39;]
                scategory = form.cleaned_data[&#39;category&#39;]
        else:
            form = SearchForm()
        return render_to_response(&quot;books/create.html&quot;, {
            &quot;form&quot;: form,
        }, context_instance=RequestContext(request))


The form shows up fine, but when I submit it I get an error: `&#39;SearchForm&#39; object has no attribute &#39;cleaned_data&#39;`

I&#39;m not sure what&#39;s going on, can someone help me out? Thanks!



Django: Model Form &quot;object has no attribute &#39;cleaned_data&#39;&quot;

Possibly a newbie question, so please bear with me.

I have a Django form that edits a certain instance of a Model. In order to know which object is being edited, I have a hidden field containing the id of the object, along with the URL containing the id. 

**First question**: Is having the id of the object in a hidden field the right way of doing it?

My (possibly unfounded) concern with having it only as part of the url is that someone could then open the page of one object id, submit the form to another, and that object will then be overwritten. That&#39;s why I&#39;m trying to use a hidden field.

The problem with storing the id in a hidden field is that, on validation of the form, Django complains that the object does not have an unique id (obviously). 

**Second question**: If a unique field is part of a form, how does one tell Django to ignore the fact that that key already exists, in order to update the object?

How to update an object from edit form in Django?

One of the ways to limit objects is to add a limitation to a function like this

    def ten_objects():
        obj = Model.objects.all()[0:10]  # limit to 10
        return {&#39;objects&#39;: obj}

However how do you achieve this inside a template rather than inside a view? 

I know you can filter through objects within a template and limit characters but how do you actually limit the amount of objects displayed in a loop. Via the template. for example the following code will loop through all objects....

        &lt;ul&gt;
         {% for new in news %}
          &lt;li&gt;
           &lt;p&gt;{{ news.title }}&lt;/p&gt;
           &lt;p&gt;{{ news.body }}&lt;/p&gt;
          &lt;/li&gt;
         {% endfor %}
        &lt;/ul&gt;

How do I break the loop, say after the firs 3 objects/items. And how do I do it inside the template. Thanks in advance.

How do you limit list objects template side, rather than view side

How do I check if a variable is **False** using Django template syntax?

    {% if myvar == False %}

Doesn&#39;t seem to work.

Note that I very specifically want to check if it has the Python value `False`. This variable could be an empty array too, which is *not* what I want to check for.

Django templates: If false?

    EMP_CHOICES = (
             (0,&#39;-- Select --&#39;),
             (1,&#39;Good&#39;),
             (2,&#39;Average&#39;),
         )

    class EMPFeedback(models.Model):
         user_choices = models.IntegerField(choices=EMP_CHOICES)

If the value stored in the db as 1 for user_choices how to print the corresponding user_choices corresponding value (i.e. 1==GOOD)

    fb = EMPFeedback.objects.get(id=1)
    print fb.user_choices  # prints 1
    print fb.user_choices.EMP_CHOICES 


Django print choices value

**models.py:**

    class Person(models.Model):
        name = models.CharField(max_length=200)
        CATEGORY_CHOICES = (
            (&#39;M&#39;, &#39;Male&#39;),
            (&#39;F&#39;, &#39;Female&#39;),
        )
        gender = models.CharField(max_length=200, choices=CATEGORY_CHOICES)
        to_be_listed = models.BooleanField(default=True)
        description = models.CharField(max_length=20000, blank=True)

**views.py:**

    def index(request):
        latest_person_list2 = Person.objects.filter(to_be_listed=True)
        return object_list(request, template_name=&#39;polls/schol.html&#39;,
                           queryset=latest_person_list, paginate_by=5)

On the template, when I call `person.gender`, I get `&#39;M&#39;` or `&#39;F&#39;` instead of `&#39;Male&#39;` or `&#39;Female&#39;`.


How to display the value (`&#39;Male&#39;` or `&#39;Female&#39;`) instead of the code (`&#39;M&#39;`/`&#39;F&#39;`)?



Content Type	Original Author	Original Content on Stackoverflow
Question	user182945	View Question on Stackoverflow
Solution 1 - Django	Will Hardy	View Answer on Stackoverflow
Solution 2 - Django	Eren Süleymanoğlu	View Answer on Stackoverflow
Solution 3 - Django	kkaehler	View Answer on Stackoverflow
Solution 4 - Django	LondonAppDev	View Answer on Stackoverflow
Solution 5 - Django	qaz	View Answer on Stackoverflow

How to get form fields' id in Django

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How to convert a clojure keyword into a string?

How to reload modules in django shell?

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