Re: how to update form after a user select a choice

[xueqi dong]

Hi thanks for advice. Though could you please provide an example somewhere?
my application probably needs to use javescript once  - it is a bit hard to
learn javascript from the beginning...

...
Xueqi Dong
Teaching Fellow, Economics group, Newcastle University Business School
5 Barrack Road, Newcastle, NE1 4SE, UK
Tel: +44  7780113210
Email: xueqidon...@gmail.com
Linkedin: https://sites.google.com/site/xueqidotdong/home

On 31 March 2018 at 13:02, Jani Tiainen <rede...@gmail.com> wrote:

> Hi,
>
> You need to write a piece of javascript that attaches to your radio
> buttons to call some javascript function to do what ever you want to happen.
>
> You can use js libraries like jquery to make things easier.
>
> 31.3.2018 14.15 "xueqi dong" <xueqidon...@gmail.com> kirjoitti:
>
>
> <https://lh3.googleusercontent.com/-R_HFbMboDMs/Wr9ptIsjQQI/AwQ/qfzbfcmpuGEWKAtCHo1vDu-ehVHkmF_PwCLcBGAs/s1600/VwH9Q.png>
> Hi, I would like to achieve the function as shown in the picture above.
> When an user click the radio button Lottery 1, Lottery 1 in the table above
> will become highlighted by colour yellow. When the form is initially
> rendered, neither lotteries are highlighted.
>
> I googled this and it seems that this has to be done on the client side
> and has little to do with Django. But I am not sure how to track the value
> of the selected choice in html. I know I can get the value of the submitted
> choice use forms.cleaned_data in views.py.
>
> In my form.py I have
>
> class AnswerForm(forms.Form):
> ANSWER_CHOICES = (
> (1, 'Lottery 1'),
> (2, 'Lottery 2'),
> )
> answer = forms.ChoiceField(choices=ANSWER_CHOICES, 
> widget=forms.RadioSelect)
> question = forms.IntegerField(widget=forms.HiddenInput)
>
>
> In problems.html template I have
>
> 
> 
>
>
>
> Please make a choice between two lotteries.
> Which lottery do you want choose   
>
>
>
>  
>   Two lotteries
>
> 
> "green">
>  
>
> State 1
>State 2
>State 3
>  
>
>  
> Lottery 1
> {{ problem.0 }}{{ sltlottery }}
>  {{ problem.1 }} 
>  {{ problem.2 }}
>  
>
>
> Lottery 2
>  {{ problem.3 }} 
>   {{ problem.4 }} 
>   {{ problem.5 }} 
>  
>
>   
>
>
>
>
>
> 
> {% csrf_token %}
> {{ form.as_p }}
> 
> 
>
>
> It looks like i need a logic statement like the following :  if selected
> choice =1, colour 1= "yellow", colour 2= "white"  else: colour 2= "yellow",
> colour 1= "white"
>
> There are two crucial steps I am not sure how to do.
>
> First, after an user select on choice by click the Radio button, how can I
> track the associated value?  For example, when Lottery 1 is selected, I
> need selected choice =1.
> Second, what is the easiest way to set write the logic statement in html?
> I am even not quite sure where to put the logic statement...
>
> Any help would be much appreciated!
>
> Xueqi
>
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how to update form after a user select a choice

[xueqi dong]

Hi, I would like to achieve the function as shown in the picture above. 
When an user click the radio button Lottery 1, Lottery 1 in the table above 
will become highlighted by colour yellow. When the form is initially 
rendered, neither lotteries are highlighted.

I googled this and it seems that this has to be done on the client side and 
has little to do with Django. But I am not sure how to track the value of 
the selected choice in html. I know I can get the value of the submitted 
choice use forms.cleaned_data in views.py.

In my form.py I have 

class AnswerForm(forms.Form):
ANSWER_CHOICES = (
(1, 'Lottery 1'),
(2, 'Lottery 2'),
)
answer = forms.ChoiceField(choices=ANSWER_CHOICES, widget=forms.RadioSelect)
question = forms.IntegerField(widget=forms.HiddenInput)


In problems.html template I have 






Please make a choice between two lotteries.
Which lottery do you want choose   



 
  Two lotteries
   

   
 
   
State 1
   State 2
   State 3
 

 
Lottery 1
{{ problem.0 }}{{ sltlottery }}
 {{ problem.1 }} 
 {{ problem.2 }}
 

   
Lottery 2
 {{ problem.3 }} 
  {{ problem.4 }} 
  {{ problem.5 }} 
 

  

   




{% csrf_token %}
{{ form.as_p }}




It looks like i need a logic statement like the following :  if selected 
choice =1, colour 1= "yellow", colour 2= "white"  else: colour 2= "yellow", 
colour 1= "white"

There are two crucial steps I am not sure how to do.

First, after an user select on choice by click the Radio button, how can I 
track the associated value?  For example, when Lottery 1 is selected, I 
need selected choice =1.
Second, what is the easiest way to set write the logic statement in html? I 
am even not quite sure where to put the logic statement...

Any help would be much appreciated!

Xueqi

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choice tasks web application

[xueqi dong]

Hello, I have just finished the django tutorial here 
https://docs.djangoproject.com/en/2.0/intro/tutorial01/. But I am still not 
sure to write the following intended web application.

The application asks an user to enter his/her name, then to make 30 
choices(either choose 1 or 2). At the end I need to record those 30 choices 
under the user's name.

The major part I am confusing is about data export and import. The tutorial 
shows how to enter the questions in a shell. But I would like to the 
program to read parameters from a matlab matrix(say 30*6 matrix), or 
whatever files possible. Here the number of rows is equal to 30, which is 
equal to the number of task.

Essentially I only need one form. The form should iteratively read one row 
from the matrix and uses the numbers in that row to show a choice task to 
the user. The user makes a choice and proceeds to next form. The next form 
will read the next row from the matrix and shows a new choice task. An 
example of one choice task would look like the following:

Which one do you prefer?

Choice 1: [40,20,10]

Choice 2: [30,50,20]

I am also not sure about using database. The exported data is simply 30 
 numbers of either 1 or 2. Can I just find some way to save this dataset, 
named as the user's name? 

Can anyone help me with this or  let me know where to find an example/ 
tutorial?

Many thanks!

Cheers,

Xueqi

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