Convert list to string in rendered Jinja template

[Shifa Shaikh]

I have a variable files like below:

  layers:
    - name: APP
      things:
        - cactus
        - lotus
        - jasmine
        - rose
      bgcolor:
        - sky blue


    - name: WAS
      things:
        - mango
        - apple
      bgcolor:
        - yellow

Below is my jinja template file:

{% for layer in layers %}
<table bgcolor="{{ layer.bgcolor | list}}">
<tr>
<th> </th>
{% for item in layer.things %}
<th align="center">{{ item }}</th>
{% endfor %}
</tr>
</table>
{% endfor %}

I run this with the below playbook:

---
  - name: Demonstrating variables in Jinja2 Loops
    hosts: localhost
    connection: local
    vars_files:
      - vars.yml
    gather_facts: no
    tasks:
      - name: Create the Jinja2 based templateone

        template: src=./varloop_new.j2 dest=./output.txt

The output recieved has a problem. 

Output.txt:

-bash-4.2$ cat output.txt
<table bgcolor="[u'sky blue']">
<tr>
<th> </th>
<th align="center">cactus</th>
<th align="center">lotus</th>
<th align="center">jasmine</th>
<th align="center">rose</th>
</tr>
</table>
<table bgcolor="[u'yellow']">
<tr>
<th> </th>
<th align="center">mango</th>
<th align="center">apple</th>
</tr>
</table>

It displays bgcolor="[u'sky blue']" instead of bgcolor="sky blue"

How can I convert the list to a string in the jinja template.

[Mark Whaite]

Hi

You can find all about Jinja filters here https://docs.ansible.com/ansible/latest/user_guide/playbooks_filters.html

But you can convert a list to a string using 

{{ list | join(" ") }}

This will add a space between each element. I am not sure if that is what you need. 

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[Stefan Hornburg (Racke)]

On 3/6/20 9:04 AM, Shifa Shaikh wrote:
> I have a variable files like below:
>
> |
>   layers:
>     -name:APP
>       things:
>         -cactus
>         -lotus
>         -jasmine
>         -rose
>       bgcolor:
>         -sky blue
>
>
>     -name:WAS
>       things:
>         -mango
>         -apple
>       bgcolor:
>         -yellow
> |
>
>
> Below is my jinja template file:
> |

> {%forlayer inlayers %}

> <table bgcolor="{{ layer.bgcolor | list}}">
> <tr>
> <th></th>
> {% for item in layer.things %}
> <th align="center">{{ item }}</th>
> {%endfor %}
> </tr>
> </table>
> {%endfor %}
> |
>

Try the join filter {{ layer.bgcolor | join(' ') }}. It is fruitless to apply the list
filter to a list :-).

Regards
Racke

> I run this with the below playbook:
>
> |
> ---
>   -name:Demonstratingvariables inJinja2Loops
>     hosts:localhost
>     connection:local
>     vars_files:
>       -vars.yml
>     gather_facts:no
>     tasks:

>       -name:Createthe Jinja2based templateone

>
>         template:src=./varloop_new.j2 dest=./output.txt
> |
>
>
>
> The output recieved has a problem. 
>
> Output.txt:
>
> |
> -bash-4.2$ cat output.txt
> <table bgcolor="[u'sky blue']">
> <tr>
> <th></th>
> <th align="center">cactus</th>
> <th align="center">lotus</th>
> <th align="center">jasmine</th>
> <th align="center">rose</th>
> </tr>
> </table>
> <table bgcolor="[u'yellow']">
> <tr>
> <th> </th>
> <th align="center">mango</th>
> <th align="center">apple</th>
> </tr>
> </table>
> |
>
>
> It displays bgcolor="[u'sky blue']" instead of bgcolor="sky blue"
>
> How can I convert the list to a string in the jinja template.
>

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[Shifa Shaikh]

Thank you @Stefan, 

That solves the issue !!

> ansible...@googlegroups.com <mailto:ansible-project+unsub...@googlegroups.com>.