Hi I am building a simple blog using Python/Django. In my index.html file, I am trying to show archived posts when a button containing a month is clicked. At the moment, I am just trying to get the id of every post made in that month into a javascript array. For some reason though,it always returns true!
<script type="text/javascript">
function showPosts(month)
{
var posts_in_month=[];
{% for post in all_posts %}
var match = {{ post.pub_date.month }}
{% ifequal match month %}
posts_in_month.push({{ post.id }})
{% endifequal %}
{% endfor %}
}
</script>
I then go on to have a switch statement where I show the contents of the array depending on the month clicked. The code definitely works, when I call an alert(month) it shows up correctly, and when I call alert({{ post.pub_date.month }}) it shows up fine as well. These are usually not the same though, why is it always evaluating the ifequal to true?
You cannot create Javascript variable in python and use it as python's variable.
Replace the match with actual value:
{% ifequal post.pub_date.month month %}
posts_in_month.push({{ post.id }})
{% endifequal %}
Related
Hi all I'm trying to get the value from flask and print it in javascript.
When I do print with a javascript string variable in my form it prints none.
var javascript_variable = "key_name";
// output is: request
console.log('request'+"{{request.form['"+javascript_variable+"']}}");
Also tried
// output is: request
console.log('request'+"{{request.form["+javascript_variable+"]}}");
however when I manually type the key name it works.
// output is: request key_information
console.log('request'+"{{request.form['key_name']}}");
Can someone please tell me what I'm doing wrong.
EDIT: I do not want to hardcode the keyname because the key_name is a changing dynamically
I'm trying to access that variable, so I can populate my select option/checkbox/radiobox option something like <option {% if request.form['key_name'] == "value" %} selected {% endif %} same for checkbox and radio box
In order to do that, you can use the flash statements inside the views in flask as follows,
#blueprint.route('/something.html', methods=['GET', 'POST'])
#login_required
def function():
try:
flash("Submission successful!")
except Exception as e:
traceback.print_exc()
return render_template('something.html')
In jinja, you can access the flash variable in the following way,
{% if get_flashed_messages() %}
{% for message in get_flashed_messages() %}
<script>window.alert("{{ message }}")</script>
{% endfor %}
{% endif %}
How to compare javascript variable "var1" with django multiple values. If a answer is ok, program should say ¡very good!
Django + Javascript:
<script>
var var1 = document.getElementById("userAnswer").value;
if (
{% for textEUS in question.textEUS.all %}
var1 == {{ textEUS }}
{% endfor %}
){
alert(¡Very good!);
}
</script>
only Django:
{% for textEUS in question.textEUS.all %}
{{ textEUS }}
{% endfor %}
only Javascript:
<script>
function tocorrect(){
var var1 = document.getElementById("userAnswer").value;
if (var1 == "answer"){
alert(¡Very good!);
}
}
</script>
What you're trying to do isn't possible the way you're trying to do it. This is the order of things:
Django renders a page using the django template language. This page might consist of HTML, javascript, and text really. All of the django tags, filters, variables have been assessed and processed at this point. For example:
{% for textEUS in question.textEUS.all %}
{{ textEUS }}
{% endfor %}
will have turned into a list of text.
The page rendered above is sent to your users browser
In the browser, the page is loaded, and javascript is executed, but at this point there are no more django template-tags etc.
The key point is:
You can't expect django template tags to 'run' at the sametime as your javascript. One happens on the backend, the other on the frontend.
You can however set a javascript variable using the django template language in the backend, and then use it in the front-end:
<script>
var var1 = document.getElementById("userAnswer").value;
// create a variable called textEusAll, this is completed in the backend
// before the page is sent to the user
var textEusAll = [
{% for textEUS in question.textEUS.all %}
"{{ textEUS }}"{% if not forloop.last %},{% endif %}
{% endfor %}
]
// use plain javascript for stuff happening in the front-end
if (textEusAll.includes(var1)) {
alert("¡Very good!");
}
</script>
I'm currently using Django in my template to generate href for each list element and on the url, a certain method is executed, removing the item from the list, however I'd like a confirmation box to appear to assure the user they wish to delete it.
The only issue is the url is dynamic, and changes for each element of the list using django variables, shown below:
<div id="list5">
<ul>
{% if results %}
{% for result in results %}
<li><strong>{{result.0}}</strong>evaluating {{result.1}}</li>
{% endfor %}
{% else %}
<li><strong>Assessor</strong>evaluating Assessee</li>
{% endif %}
As a result, inline javascript onclick methods, and JQuery that I've been able to find on stack overflow doesn't seem to be working for me, is there a way I can generate a confirmation box (browser confirm is fine) on clicking of the list element, which then on a "yes" redirects and follows the url from the list element that the click was made from?
You should be able to use a setup like this:
jQuery:
$(document).ready(function() {
$('.deleter').click(function() {
if(confirm('Are you sure you want to delete this?') == true) {
window.open($(this).attr('goto'));
}
})
})
Template:
<div id="list5">
<ul>
{% if results %}
{% for result in results %}
<li class='deleter' goto='/accounts/delete/{{result.0}}/{{result.1}}'><strong>{{result.0}}</strong>evaluating {{result.1}}</li>
{% endfor %}
{% else %}
<li><strong>Assessor</strong>evaluating Assessee</li>
</ul>
{% endif %}
</div>
I pass some data and process in my django template file. It works just fine. However, when i right click and then select "view page source" on my internet browser, i can see all the values that i passed from my view.py. How to hide the values in the template file.
Child.page
{% extends "base.html" %}
{% block title %}My amazing blog{% endblock %}
{% block extra_js %}
<script>
var secret_data = new Array();
function mybutton(){
{% for data in Mysecret%}
// Here, I wanna make the value of data invisable
secret_data.push({{ data.0 }})
{% endfor %}
}
</script>
{% endblock %}
{% block content %}
<input type="submit" name="submitButton" value="Submit" onclick ="mybutton();"> </input>
{% endblock %}
When i right click and select "view to source" on my internet browser, i can see all the values something like that:
<script>
var secret_data = new Array();
function mybutton(){
secret_data.push("Secret-1")
secret_data.push("Secret-2")
}
</script>
I have tried this:
secret_data.push({% csrf_token %}{{ data.0 }})
The values cannot be seen in case of viewing source code of the page, but at the same time it messes up the data that i pass (cannot access data cause the data turns out a div). How can i make my secret_data list invisible so that if someone tries to view source of my page, she would not be able to see the passed values ("Secret-1" and "Secret-2").
In a Django template, how could I refer to the URL. I want to use it in static pages, to avoid having live links to the current page. Is there a way to do this with the Django template language or do I have to use JavaScript to do it?
I would like to do something like
{% if current_url == "/about/" %}
About
{% else %}
<a href='/about/'>About</a>
{% endif %}
I'm using it for a simple blog, so there are no views written for those pages.
I presume by your reference to 'static pages' you mean generic views. Internally, these use RequestContext, so you have access to the request object which is the current HttpRequest. So you can access the current URL with request.path.
{% if request.path == '/about/' %}
...
{% endif %}
Note that this if syntax is Django 1.2+ only - if you're using an older version, you have to do:
{% ifequal request.path '/about/' %}
...
{% endifequal %}
instead of current_url in your example above, you can substitute request.path (assuming you've got django.core.context_processors.request in play). And it'd have to be == not = :o)
I think you can accomplish this with simple template inheritance:
# base.html
{% block contactlink %}<a href='/contact/'>Contact</a>{% endblock %}
{% block aboutlink %}<a href='/about/'>About</a>{% endblock %}
...
# about.html
{% block aboutlink %}About{% endblock %}
# contact.html
{% block contactlink %}Contact{% endblock %}
Of course this only works if you have a separate template for each page, but I'm assuming you do since you said the pages are static. Knowing more about what views you are using (assuming generic view direct_to_template or similar) and your urls.py would help.