Filter or map in jinja2 - docker-compose

Question

I'm trying to filter or map this yml file. Up to now I was able to access it with this
{{services[0].version}}
But I need to access it with it name, without the position.
Yml file
"services":
- "service": "front"
"image": "acalls-caselog-web-app"
"version": "latest"
- "service": "back"
"image": "acalls-caselog-web-service"
"version": "latest"
docker-compose.yml.j2
version: "3.3"
services:
front:
image: url/{{services[0].image}}:{{services[0].version}}
ports:
- "81:81"
extra_hosts:
- "backend:172.32.3.46"
environment:
profile: preproduction
back:
image: url/ {{services[1].image}} : {{services[1].version}}
ports:
- "82:82"
extra_hosts:
- "backend:172.32.3.46"
environment:
profile: preproduction
I really don't now If I need to use map, filter or there is another form like service.service(front).image

Answer 1

You can do this using the selectattr filter:
{{services | selectattr("service", "equalto", "front")}}
In your YAML, you can apply it like this:
version: "3.3"
services:
front:
image: {% with front=services|selectattr("service", "equalto", "front") -%}
url/{{front.image}}:{{front.version}}
{%- endwith %}
ports:
- "81:81"
extra_hosts:
- "backend:172.32.3.46"
environment:
profile: preproduction
back:
image: {% with back = services|selectattr("service", "equalto", "back") -%}
url/ {{back.image}} : {{back.version}}
{%- endwith %}
ports:
- "82:82"
extra_hosts:
- "backend:172.32.3.46"
environment:
profile: preproduction