HELLO，I have many buttons like:
<button name="A"></button>
<button name="B"></button>
<button name="C"></button>
When I click on a button, I want to get the corresponds name, then use it in my view to compare with some string.
request.POST.get how to get the value I need?
To be able to use request.POST.get you need to have the buttons wrapped in an HTML <form></form> and get the data using django forms
Related
I am working on a ticketing system and a create new ticket form which requires you to enter the status (working, open, closed etc.), the severity (low, high, normal, asap etc.) and several other parameters. The select boxes seem to be old-school and time-consuming so I want to replace them with a series of buttons.
model
status = models.CharField(max_length=100, choices=STATUS_CHOICES)
severity = models.CharField(max_length=100, choices=SEVERITY_CHOICES)
template:
<div class="form-group">
{{ form.status.errors }}
<label for="id_status" >Status:</label>
{{ form.status }}
</div>
<div class="form-group">
{{ form.severity.errors }}
<label for="id_severity" >Severity:</label>
{{ form.severity }}
</div>
How can this be achieved?
I'm assuming you meant radio buttons here, in which case you need to change the form widget for the field:
SEVERITY_CHOICES=[('critical','Critical'),
('blocking','Blocking),
('normal','Normal)]]
severity = forms.ChoiceField(choices=SEVERITY_CHOICES, widget=forms.RadioSelect())
If that's not what you're after then you'll have to write your own custom widget.
Button is not meant for that, man.
I commented your question and what i meant was - HOW - in the sense of HTML, can BUTTON be used for storing selected value? Button is not meant for that. Button is meant for clickin and doing something upon click.
Yes - you can make button click open drop-down list of elements. And yes- twitter bootstrap supports that (http://getbootstrap.com/components/#btn-dropdowns).
But what does not work is:
Button does not store the selected value. You would have to write all that js by yourself - change button inner text to indicate selected value.
Even worse - BUTTON is not an html element with value attribute - and it does not get posted on form post. You would have to come up with some means of inserting that value into list of values that get posted on form submit. All possible if you know your javascript.
There is no support in django for presenting field with many values as button. You would have to create your own widget for that. Again - it is all possible with django.
BUT... Why go through all that work, when, with some CSS you could just make your select LOOK like the button styles that Twitter bootstrap offers....
First of all I am new to this joomla CMS. I have a joomla project. here i have customized the userprofile plugin and added some more fields .
in registration form i need an extra button named "Save for later ". thus my form contains 3 button ( save for later, Register and cancel )
i need to write a javascript function in the onclick event of "save for later button ".
So i have done
In components/com_user/views/registration/tpl/default.php I have created a button as in normal way. and wrote a javascript function call on this
<input type="submit" class="validate" value="Save For Later" name="SaveDraft" onclick="fnSaveDraft()">
At the top of the page i write the function
<script language="javascript" type="text/javascript">
function fnSaveDraft() {
alert('hai');
return false;
}
</script>
But nothing happend
Please advise me
I would like to suggest you to that don't change the core file unless you really needed.You can use the template overridden method for task.For detail go to that link.
How to override the output from the Joomla! core.
And for your problem your are using the input type as submit that why your form will submitted and your function was not call. You can use type as button then your task will be done.Replace your input field with this.
<input type="button" class="validate" value="Save For Later" name="SaveDraft" onclick="fnSaveDraft()">
I have a finite state machine (django-fsm) which allows an object to go from a source state into one of several target states. I can add all the actions in a dictionary like:
ACTIONS { 'button_1': action1,
'button_2': action2,
...
}
This translates in a form with a submit button for each state.
{% for n,m in object.get_available_current_state_transitions %}
<input type="submit" class="btn" value="{{ n|get_action|capfirst }}"
name="button_{{n}}" />
{%endfor%}
<input type="submit" class="btn primary" value="Save">
<a class="btn" onclick="javascript:history.go(-1)">Cancel</a>
This usually results in more than 3 buttons.
Clicking a button results in a specific action, defined in my case in the model class.
Now, I know I can get the clicked button in the request.POST dictionary, but this would result in a cascade if like:
if 'button_1' in request.POST:
action_1()
elif 'button_2' in request.POST:
...
Is there any way to get the button pressed separately (ideally from the request object) in a variable so I can have something like
ACTIONS[clicked_button_name](...)
? In other words, is there any way to obtain the clicked button outside the POST dictionary?
PS: I've looked other replies on the "multiple buttons" question, but all offer request.POST as answer.
If all of the actions and strings are already in your view, why don't you just iterate over that actions dict?
for key, value in ACTIONS.items():
if key in request.POST:
value()
Just make your button names very unlikely to be used as a regular form field name.
A few alternatives: use javascript to handle the submission and have it set a single form field such as "action".
Use more unique keys and filter through request.POST.keys() with a regex pattern or string comparison.
action = [x for x in request.POST.keys() if 'FAIRLY_UNIQUE_BUTTON_PREFIX' in x]
if action:
ACTIONS[action]()
I don't think so directly, but a couple workarounds could be:
Send your buttons to different urlconfs with some variable (like a three letter arg). All of these confs point to the same view taking this three letter arg as an argument, which then knows what to do. This might still result in a cascade if else though.
Or, send them to different views all together.
You could try doing something ajaxy. The data will still be in a post dict, but you will have more control over how the post dict is structured.
I'm also assuming GET isn't an option for any of these (yet that still results in if else structures.)
I know how to pass a next get parameter to a view so that when the view redirects, it goes to whatever url is in next. Is it possible to do this with the cancel button of a form?
If my form buttons are like this:
<input type="submit" value="Save Changes"><input type="button" value="Cancel Changes" onclick="window.location.href='/systems/'">
Is there some way to add the next parameter into the href instead of /systems/?
Thanks!
Well, this is just HTML in your template, so why can't you do
onclick="window.location.href='{{ myurl }}'">
?
Edit after comment
Sounds like you need a context processor, which automatically adds the value of the next GET parameter to the context. As simple as:
def get_next(request):
if 'next' in request.GET:
return {'next': request.GET['next']}
Now add this to the list of CONTEXT_PROCESSORS in settings.py, and make sure you use a RequestContext when rendering your template (or just the new render() shortcut).
I have a web page where the user enters some data and then clicks a submit button. I process the data and then use the same Django template to display the original data, the submit button, and the results. When I am using the Django template to display results, I would like the page to be automatically scrolled down to the part of the page where the results begin. This allows the user to scroll back up the page if she wants to change her original data and click submit again. Hopefully, there's some simple way of doing this that I can't see at the moment.
It should already work if you provide a fragment identifier in the action method of the form:
<form method="post" action="/your/url#results">
<!-- ... -->
</form>
and somewhere below the form, where you want to show the results:
<div id="results">
<!-- your results here -->
</div>
This should make the page jump to the <div> with ID results.
It is complete client site and does not involve Django, JavaScript or similar.
You need to wrap your data into something like this:
<div id="some-id">YOUR DATA TO BE DISPLAYED</div>
and if you make redirect in your view you need to redirect to url: /some-url/#some-id
if you don't make redirect you need to scroll to the bottom using javascript (but note that redirect is preffered way to use in view after saving data).