I have two submit buttons in a CGI script (in C++). One (value=Submit) simply saves the form data. The other one (value=Save and Reboot) is supposed to save the form data the same way and then reboot.
Essentially, I want to do this:
if(method == "POST")
{
//element 1 saved
//element 2 saved
//etc etc
if(second button is pushed)
//handle reboot code
}
But how do I tell which button was pushed? I saw this question, but it's in php. I'm working in a C++ CGI script. I've been reading through the CGICC documentation, but I can't find anything on identifying which button was pressed.
To be clear, both buttons essentially will do the same thing (a 'POST'), but I need to be able to identify the button so I can reboot if necessary.
Lets say that you have two buttons, one named "Submit", and one named "Save and Reboot":
<form method="POST" action="">
<input type="submit" name="Submit" />
<input type="submit" name="Save and reboot" />
</form>
Now, just check if there is a value set in the POST data with the appropriate name:
form_iterator fsubmit = formData.getElement("Submit");
if( !fsubmit->isEmpty() && fsubmit != (*formData).end()) {
// The sumbit is pressed
}
form_iterator fsaveandreboot = formData.getElement("Save and reboot");
if( !fsaveandreboot->isEmpty() && fsaveandreboot != (*formData).end()) {
// The save and reboot is pressed
}
This is very easy to write once that you understand that the button that was not clicked will not be included in the POST data.
Related
In my testing, one of the page is having "Submit" button and when i try to click on submit button is not working (not clicking) even though script is executed.
Below is the HTML code for the submit button
<button class="btn btn-primary" name="submit_button" value="1" type="submit">
<i class="fa fa-check"></i>
Submit
I have written the scripts as like below to find submit button element.
time.sleep(6)
sub = web.find_element_by_name("submit_button")
sub.click()
I have tried to find element using "Xpath" (Absolute XPath and Relative XPath) as well and observed that did not work. one more thing is that,the accessible page is in "iframe"
and i have access that as like below
web.switch_to.frame("page-content")
To confirm that whether the scripts is running or not i have modified above code as like below.
time.sleep(6)
print ("hello")
sub = web.find_element_by_name("submit_button")
print ("hello1")
sub.click()
print ("hello2")
From above code i got know that scripts were executing successfully
Please guide me what is the issue?
Answers are much appreciable!
I'm pretty much trying to create a web app that takes 2 svn urls and does something with them.
The code for my form is simple, I'm also using WTForms
class SVN_Path(Form):
svn_url=StringField('SVN_Path',[validators.URL()])
I'm trying to create 2 forms with 2 submit buttons that submit the 2 urls individually so my test3.html looks like this:
<form action="" method="post" name="SVNPath1">
{{form1.hidden_tag()}}
<p>
SVN Directory:
{{form1.svn_url(size=50)}}
<input type="submit" value="Update">
<br>
{% for error in form1.svn_url.errors %}
<span style="color: red;">[{{error}}]</span>
{% endfor %}
</p>
</form>
<form action="" method="post" name="SVNPath2">
{{form2.hidden_tag()}}
<p>
SVN Directory:
{{form2.svn_url(size=50)}}
<input type="submit" value="Update">
<br>
{% for error in form2.svn_url.errors %}
<span style="color: red;">[{{error}}]</span>
{% endfor %}
</p>
</form>
MY FIRST QUESTION is how do I know which submit button was clicked so I can run the proper function on the corresponding svn url. I have tried doing something like
if request.form1['submit'] == 'Update':
if request.form2['submit'] == 'Update':
but that does not work at all. I'm new to web dev in general and flask so a detailed explanation would be helpful.
SECONDLY, since submits weren't working properly I also tried an alternative to keep my work moving so in my .py file I have
#app.route('/test3', methods=['GET','POST'])
def test3():
basepath=createDir()
form1=SVN_Path()
form2=SVN_Path()
if request.method=="POST":
if form1.validate_on_submit():
svn_url = form1.svn_url.data
prev_pdf=PDF_List(svn_url,basepath,'prev') #some function
if form2.validate_on_submit():
svn_url2 = form2.svn_url.data
new_pdf=PDF_List(svn_url,basepath,'new') #some function
return render_template('test3.html', form1=form1, form2=form2)
CreateDir is a function that creates a directory in the local /tmp using timestamps of the local time.
Whenever I go the webpage it creates a directory, lets call it dir1, since its calling CreateDir. Thats what I want, but when I click submit on the form it creates another directory dir2 in the tmp folder which is NOT what I want since I want everything to being the same dir1 directory.
In addition when I put a url in one of the forms and click submit, it automatically puts it the same value in the 2nd form as well.
Sorry if this is really long and possibly confusing, but any help is appreciated.
:) Let's see if we can clarify this a little.
To your first question:
As #dim suggested in his comment, You have a few options:
You can submit your form to separate unique urls. That way you know which form was submitted
You can create two similar but different Form classes (the fields will need different names like prev_svn_url and cur_svn_url). This way in your view function, you instantiate two different forms and you'll know which form was submitted based on form.validate_on_submit()
The third option would be to add a name attribute to your submit button and then change the value attributes to something like 'Update Previous' and 'Update Current'. This way in your view function you can check the value of request.data[<submit button name>] to determine if 'Update Previous' was pressed or 'Update Current'.
To your second question:
Multiple directories are being created because you're calling createDir() each time the page is loaded to show the forms and when the forms get posted. In order to create just once, you'll need some kind of logic to determine that the directory was not previously created before calling createDir()
In addition: Since both forms are from the same SVN_Path class, they read post data exactly the same way, that's why whatever you type in form 1 appears in form 2.
Now for my 2 cents:
I assume you're trying to write some kind of application that takes two SVN urls as input, creates a folder and does something with those URLs in that folder. If this is the case, the way you are currently going about it is inefficient and won't work well. You can achieve this with just one form class having 2 svn_url fields (with different names of course) and then handling all of that in one post.
EDIT: The job of the submit button is to tell the browser that you're ready to send the data on the form to the server. In this case you should only need one submit button (SubmitFiled => when rendered). Clicking that one submit button will send data from both input fields to your view function.
Your form should look something like:
class SVN_Path(Form):
prev_svn_url=StringField('Previous SVN_Path',[validators.URL()])
new_svn_url=StringField('New SVN_Path',[validators.URL()])
and your view function:
def test():
form = SVN_Path()
if request.method == "POST":
if form.validate_on_submit():
basepath = createDir() # Only create dir when everything validates
prev_svn_url = form.prev_svn_url.data
new_svn_url = form.new_svn_url.data
prev_pdf = PDF_List(prev_svn_url, basepath, 'prev')
new_pdf = PDF_List(new_svn_url, basepath, 'new')
...
return render_template('test3.html', form1=form1, form2=form2)
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.)
User registration in my application is performed in steps. After submitting the form, some validation is performed and then register_prompt view is called. It renders a form, with two options - 'ok' and 'cancel'. Clicking ok will run registration, and clicking cancel should redirect to main page. Problem is that no matter which of the two I choose, I'm redirected to .../user/registration/function_1_or_2_name with a blank page (although I have specified url in HttpResponseRedirect ). How can I make it work ?
def register_prompt(request):
context = RequestContext(request)
return render_to_response('user/data_operations/alert.html', context_instance=context)
Form loaded on alert.html :
<form action="" method="post">
<input type="submit" class="submit" name="submit" onClick="this.form.action='{% url register_new %}'" value="Ok" />
<input type="submit" class="submit" name="submit" onClick="this.form.action='{% url redirect_home %}'" value="Cancel" />
</form>
Redirect views (maybe there is a better way to do that ?):
def redirect_home(request):
return HttpResponseRedirect('/')
def register_new(request):
(... registration magic here ...)
return HttpResponseRedirect('/user/registration/complete/')
Finally url conf :
url(r'^register_new/$', register_new, name="register_new"),
url(r'^redirect_home/$', redirect_home, name="redirect_home"),
url(r'^register_prompt/$', register_prompt, name="register_prompt"),
At first I was trying to add some abstract values to form's buttons (like 'action=ok'), and then catch them in register_prompt but it was a total disaster.
I'm not sure if that onClick="" hack is really valid (I'll let someone else weigh in on that), but did you try just using normal links, to see if it's that or something else?
OK
Cancel
(Or check out <button> if you really want it to look like buttons. Or just use two <form>s, each with a separate action="" attributes.)
Hum, other than that... You say ".../user/registration/function_1_or_2_name" -- what exactly does the {% url .. %}s give you? Does it not add the final / (which you require in your patterns)?
At first I was trying to add some
abstract values to form's buttons
(like 'action=ok'), and then catch
them in register_prompt but it was a
total disaster.
But you seem to want to manipulate the action attribute, so you can't catch anything in register_prompt()?
All in all I'd suggest you either use normal links, or actually handle the POST in the view that presented it:
def register_prompt(req):
if 'ok' in req.POST:
return register_new(req)
if 'cancel' in req.POST:
return register_cancel(req)
return render_to_response('user/data_operations/alert.html',
context_instance=RequestContext(req))
Maybe something like that? Renaming your buttons to ok and cancel, and having the form post back to itself...