I use the 'messages' interface to pass messages to user like this:
request.user.message_set.create(message=message)
I would like to include html in my {{ message }} variable and render it without escaping the markup in the template.
If you don't want the HTML to be escaped, look at the safe filter and the autoescape tag:
safe:
{{ myhtml |safe }}
autoescape:
{% autoescape off %}
{{ myhtml }}
{% endautoescape %}
If you want to do something more complicated with your text you could create your own filter and do some magic before returning the html.
With a templatag file looking like this:
from django import template
from django.utils.safestring import mark_safe
register = template.Library()
#register.filter
def do_something(title, content):
something = '<h1>%s</h1><p>%s</p>' % (title, content)
return mark_safe(something)
Then you could add this in your template file
<body>
...
{{ title|do_something:content }}
...
</body>
And this would give you a nice outcome.
Use the autoescape to turn HTML escaping off:
{% autoescape off %}{{ message }}{% endautoescape %}
You can render a template in your code like so:
from django.template import Context, Template
t = Template('This is your <span>{{ message }}</span>.')
c = Context({'message': 'Your message'})
html = t.render(c)
See the Django docs for further information.
The simplest way is to use the safe filter:
{{ message|safe }}
Check out the Django documentation for the safe filter for more information.
No need to use the filter or tag in template.
Just use format_html() to translate variable to html and Django will automatically turn escape off for you variable.
format_html("<h1>Hello</h1>")
Check out here https://docs.djangoproject.com/en/3.0/ref/utils/#django.utils.html.format_html
The safe filter did the work for me.
Using {{data|safe}} includes the html as it is.
Related
Is there any way to completely turn off django auto_escaping when rendering a template within the view code (for an email for example):
from django.template import Context, Template
subject_template_string = "Hi {{ customer.name }}"
subject_template = Template(subject)
context = Context({'customer':MyCustomerModel.objects.get(pk=1)})
subject = subject_template.render(context)
If customer.name is something like "Jack & Jill" - the subject looks like "Hi Jack &\amp; Jill" (without the backslash!)
is there something like
subject = subject_template.render(context, autoescape=False)
edit: The actual templates are created by the client in the database, I'm hoping to avoid having to say add |safe to all templates where this might happen...
Disabling it globally is usually a bad idea since you can easily forget it. I would recommend using the templatetag to disable it for that portion of your template instead.
Something like this:
{% autoescape off %}
This will not be auto-escaped: {{ data }}.
Nor this: {{ other_data }}
{% autoescape on %}
Auto-escaping applies again: {{ name }}
{% endautoescape %}
{% endautoescape %}
How about using mark_safe:
Explicitly mark a string as safe for (HTML) output purposes. The
returned object can be used everywhere a string or unicode object is
appropriate.
It marks a string as safe, so, you should take customer.name out and pass to the template:
from django.utils.safestring import mark_safe
customer = MyCustomerModel.objects.get(pk=1)
context = Context({'customer_name': mark_safe(customer.name)})
subject = subject_template.render(context)
Though, control what is safe or not is better to do inside the template itself, that's why using autoescape should be preffered.
Use Django's autoescape tag:
{% autoescape off %}
{{ body }}
{% endautoescape %}
for more info, check out the docs here.
This is untested, but based on source code review it looks like the context object can take autoescape as a key.
context = Context({'customer':MyCustomerModel.objects.get(pk=1), 'autoescape': False})
subject = subject_template.render(context)
That said, that's a pretty sweeping change. If you know what values the templates might be looking for, it's probably better to use mark_safe on those values and pass in the predefined options. That would have the added benefit of not risking the possibility of the client template calling a method with side effects on the customer. The first time someone writes a template and puts in {{ customer.delete }}, you have a problem.
Just came back to answer my own question with a simple solution, and there were already 4 answers.. thanks.
This is what I've gone with:
subject_template = Template(u'{%% autoescape off %%}%s{%% endautoescape %%}' % email.subject)
I have a Django template that looks like this:
<div id="objects">
<b>Ingredients:</b>
<small>
{% for obj in result.object.list_objects|slice:":10" %}
.{{ obj }}
{% endfor %}
......
</small>
</div>
I am trying to output a simple list but when I loop through these elements in the template, the output is unfortunately in single quotes for each object. I am new to Django templates and have tried using a few methods like safe and escape. But the single quotes remain. Is there a way in Django to strip out that specific character when loading the data?
This question looks a bit dated, but wanted to toss in a simple solution. You can make a custom template tag and use the replace function.
Example:
#register.filter
def strip_double_quotes(quoted_string):
return quoted_string.replace('"', '')
{{ my_quoted_string|strip_double_quotes }}
You can use
{% for obj in result.object.list_objects %}
{{ obj|slice:"1:-1" }}
{% endfor %}
I try to pass some html tags in server side to front side.
I had programmed like this:
view.py
....
context['tags'] = "<div><h1> Hello </h1></div>"
return render(request, 'test.html', context)
test.html is below:
<body>
{{ tags }}
</body>
the rendering result is,
<div><h1> Hello </h1></div>
But, what I want is
<h1> Hello </h1>
How do I do? I have to in this way.
"<div><h1> {{ tags }} </h1></div>" is not what I want.
Use safe templatetag: {{ tags|safe }} Here is a link https://docs.djangoproject.com/en/1.8/ref/templates/builtins/#safe
Update because of the comments:
If I didn't get your question and you wanted to just remove the div tag just use templatefilter removetags: {{ tags|removetags:"div" }} https://docs.djangoproject.com/en/1.8/ref/templates/builtins/#removetags BUT NOTE it's deprecated since Django 1.8 I recommend you read the reasons and rethink what you want to do...
I have a lot of variables that has html in them. For example the value of a variable called {{object.name}} is the following:
Play this hot game and see how <b>fun</b> it is!
Is there a filter that can be applied on the variable that will give me just the text:
Play this hot game and see how fun it is!
Without the text being linked or the html being replaced by htmlentities. Just the text?
striptags filter removes all html
{{object.name|striptags}}
You have 3 options to strip the html code:
Using "safe" filter in your template:
{{ object.name|safe }}
Using "autoescape" tag in your template:
{% autoescape off %}
{{ object.name }}
{% endautoescape %}
or declaring it as "safe" in your python code:
from django.utils.safestring import mark_safe
name = mark_safe(name)
In django I have a view that fills in a template html file but inside the html template I want to include another view that uses a different html template like so:
{% block content %}
Hey {{stuff}} {{stuff2}}!
{{ view.that_other_function }}
{% endblock content %}
Is this possible?
Yes, you need to use a template tag to do that. If all you need to do is render another template, you can use an inclusion tag, or possibly just the built in {% include 'path/to/template.html' %}
Template tags can do anything you can do in Python.
https://docs.djangoproject.com/en/3.0/howto/custom-template-tags/
[Followup]
You can use the render_to_string method:
from django.template.loader import render_to_string
content = render_to_string(template_name, dictionary, context_instance)
You'll either need to resolve the request object from the context, or hand it in as an argument to your template tag if you need to leverage the context_instance.
Followup Answer: Inclusion tag example
Django expects template tags to live in a folder called 'templatetags' that is in an app module that is in your installed apps...
/my_project/
/my_app/
__init__.py
/templatetags/
__init__.py
my_tags.py
#my_tags.py
from django import template
register = template.Library()
#register.inclusion_tag('other_template.html')
def say_hello(takes_context=True):
return {'name' : 'John'}
#other_template.html
{% if request.user.is_anonymous %}
{# Our inclusion tag accepts a context, which gives us access to the request #}
<p>Hello, Guest.</p>
{% else %}
<p>Hello, {{ name }}.</p>
{% endif %}
#main_template.html
{% load my_tags %}
<p>Blah, blah, blah {% say_hello %}</p>
The inclusion tag renders another template, like you need, but without having to call a view function. Hope that gets you going. The docs on inclusion tags are at: https://docs.djangoproject.com/en/3.0/howto/custom-template-tags/#inclusion-tags
Using your example and your answer to Brandon's response, this should work for you then:
template.html
{% block content %}
Hey {{stuff}} {{stuff2}}!
{{ other_content }}
{% endblock content %}
views.py
from django.http import HttpResponse
from django.template import Context, loader
from django.template.loader import render_to_string
def somepage(request):
other_content = render_to_string("templates/template1.html", {"name":"John Doe"})
t = loader.get_template('templates/template.html')
c = Context({
'stuff': 'you',
'stuff2': 'the rocksteady crew',
'other_content': other_content,
})
return HttpResponse(t.render(c))
Someone created a template tag that loads a view. I've tried it, and it works. The advantage of using that template tag is that you don't have to rewrite your existing views.