[16.0][ADD] Addon: project_required_field_by_stage

[Tiago370]

This PR add the module project_required_field_by_stage that allow to define required fields depending on the stage of the task.

NOTE: I was unable to find a satisfactory way to cover lines 30-33 and 35-37 of the models/project_task.py file with tests, I accept suggestions.

[gjotten]

Functional review, LGTM.

[gbrito]

Suggested change

	if hasattr(self, "%s" % field.name):
	if not getattr(self, "%s" % field.name):
	if hasattr(rec, field.name) and not getattr(rec, field.name):

[gbrito]

maybe you can only go through the stages that have required fields assigned.

Suggested change

	for rec in self:
	stage = self.env["project.task.type"].search([("id", "=", rec.stage_id.id)])
	stages = self.stage_id.filtered(lambda x: x.required_field_ids)
	for stage in stages:
	fields = (
	self.env["ir.model.fields"]
	.sudo()
	.search([("id", "in", stage.required_field_ids.ids)])
	)
	for rec in self.filtered(lambda x: x.stage_id == stage):
	for field in fields:
	if hasattr(rec, field.name) and not getattr(rec, field.name):
	raise error

[github-actions]

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[gfcapalbo]

@gbrito this MR was re-created here: #1650 , your review suggestions were implemented there.