dynamic variable qweb odoo v8

Question

I have a web page where I need to create a number of fields and variables dynamically.

Let me explain : On page One, I have a text field where i have to type the number of users I want. That number is passed as parameter to the next page (post method) and collected as nb_user on page Two.

In the template.xml of page Two i have this code :

  <form method="POST" class="col-md-8" action="/page_three">


  <t t-foreach="nb_user" t-as="user">
    <input type="text" name="comp_1_user_1" id="comp_1_user_1" class="form-control" placeholder="Computer user"/>

   </t>


<input type="submit" class="btn btn-primary" value="Validate"/>

What I would like is that based on the number that is passed in post (nb_user), it should dynamically create that amount of text fields ans also create unique id (comp_1_user_1, comp_1_user_2 etc....) so that i can enter that data into my database.

So if the parameter was 3 then it should create 3 text fields and create 3 variables comp_1_user_1, comp_1_user_2, comp_1_user_3.

I hope I was clear enough . I am very new to Odoo and Qweb.

Thanks for any help you can provide.

Can I see the code for your model class or are you adding the data directly to the database? — yorodm
– yorodm, Commented Jan 24, 2017 at 13:28
Hi. The data is transferred to a model which adds it to the DB. But that part work fine. It's just that I need to generate text fields and their attributes dynamically , based on a parameter I get on the previous page( integer). — B.Pradip
– B.Pradip, Commented Jan 25, 2017 at 6:30

Andrei Poehlmann · Accepted Answer · 2017-01-24 21:15:54Z

1

To mix literals with non-literals, use the tf-attf-$name attribute where $name stands for the attribute needed. As parameter you can then use a format-string, in your case:

<t t-foreach="nb_user" t-as="user">
    <input type="text" 
           t-attf-name="comp_1_user_{{ user }}"
           t-attf-id="comp_1_user_{{ user }}" 
           class="form-control" 
           placeholder="Computer user"/>
</t>

This will be evaluated by QWeb to be the attribute name (and id respectively) with the contents evaluated as a format string. That is, the string comp1_user_ is passed as it is and the contents of the {{ user }} snippet is evaluated as Python code.

Run with an array containing [1,2,3] instead of nb_user like so

<t t-foreach="[1,2,3]" t-as="user">
    <input type="text" 
    t-attf-name="comp_1_user_{{ user }}" 
    t-attf-id="comp_1_user_{{ user }}"
    class="form-control" 
    placeholder="Computer user"/>
</t>

leads to

with name and id iterating over comp_1_user_1, comp_1_user_2 and comp_1_user_3. Screenshot from Chrome DevTools:

For more information see docs.

edited Jan 24, 2017 at 21:15

answered Jan 24, 2017 at 21:01

Andrei Poehlmann

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2 Comments

B.Pradip Over a year ago

Thanks a lot datafile. It works file with a list [1,2,3]. But in my case, I need to pass a parameter, as the number of fields needs to be dynamic and collected in the previous page. How can I do that ??

B.Pradip Over a year ago

Your solution works fine. I just had to convert to int before passing it as a parameter. Thanks a lot for your help, much appreciated

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