[Lesson substitution] Add way to add substitution for a lesson

• In the lesson day view, make all rows that have a substitution linked to them yellow.
• Make a modelform for LessonSubstitution
• Make a view for that model form that takes the week number and the id of a LessonPeriod as URL arguments, then finds an existing LessonSubstition for that week and that lesson period. If it finds one, it passes it as instance to the modelform; if not, it passes the LessonPeriod for the lesson_period field in the initial data.
• Add a link to the lesson day table that links to the model form view with the week number (you need to get that into the table class, somehow ;)) and the lesson period of the table row

changed milestone to %1.0a1

added part::frontend prio::1 type::feature labels

changed title from [Lesson substitution] Add ay to add substitution for a lesson to [Lesson substitution] Add way to add substitution for a lesson

changed milestone to %1.0a0

assigned to @nik and unassigned @dummerdelfin

mentioned in commit e5980467

mentioned in commit c995a868

mentioned in commit 068d3452

mentioned in commit b83c6f86

changed the description

assigned to @dummerdelfin and unassigned @nik

mentioned in commit da1012c3

marked the checklist item Make a modelform for LessonSubstitution as completed

mentioned in commit d804aa9b

marked the checklist item In the lesson day view, make all rows that have a substitution linked to them yellow. as completed

marked the checklist item In the lessons view, add a link to each row to edit the corresponding lessons substituion as completed

marked the checklist item In the lessons view, add a link to each row to edit the corresponding lessons substituion as incomplete

changed the description

marked the checklist item Make a view for that model form that takes the week number and the id of a LessonPeriod as URL arguments, then finds an existing LessonSubstition for that week and that lesson period. If it finds one, it passes it as instance to the modelform; if not, it passes the LessonPeriod for the lesson_period field in the initial data. as completed

marked the checklist item Add a link to the lesson day table that links to the model form view with the week number (you need to get that into the table class, somehow ;)) and the lesson period of the table row as completed

mentioned in commit a549e87a

Remaining issue: ModelForm does not accept the pre-filled lesson_period id.

We maybe should track this problem in another Issue?

closed