Ability to disable a pipeline for a given project

[mihow]

When a project registers a Processing Service, all pipelines are added to the project and made available to users. However the project manager will likely only want to make a subset of the pipelines available to the project users. For example, if you add our default Rolnick Lab processing service, all regional models get added to your project as choices for processing images. However you probably don't want users to accidentally select the Costa Rica model in Denmark, or older models. We plan to have a method of auto-selecting regional models in the future based on a geographic shapefile, however there are already a lot of models and a way to limit the choices per project manually seems necessary.

[vanessavmac]

• Add an intermediate model containing an "enabled" field. A pipeline is enabled for a project. There's many-to-many relationship between pipelines and projects.
• Add another column to the pipelines overview with the enabled status
• all pipelines from that projects should still be visible

[mihow]

Example of an intermediate model with "through fields"

class Project(models.Model):
    name = models.CharField(max_length=128)

    def __str__(self):
        return self.name


class Pipeline(models.Model):
    name = models.CharField(max_length=128)
    projects = models.ManyToManyField(Project, through="ProjectPipelineConfig")

    def __str__(self):
        return self.name


class ProjectPipelineConfig(models.Model):
    project = models.ForeignKey(Project, on_delete=models.CASCADE)
    pipeline = models.ForeignKey(Pipeline, on_delete=models.CASCADE)
    date_added = models.DateField()
    enabled = models.BooleanField()
    default_parameters = models.JsonField()

ProjectOne.pipelines.all()

config = ProjectPipelineRelationship.objects.get(pipeline=343, project=232)

pipelines_active_for_project =  Pipeline.objects.filter(
...    project=123, project_pipeline_config__enabled=True
... )

https://docs.djangoproject.com/en/dev/topics/db/models/#extra-fields-on-many-to-many-relationships