[英]Flask Admin and SQLAlchemy relationship advice, how do I get columns from a grandparent table?
Using Flask Admin, I'm having difficulties understanding how to retrieve columns from parent and grandparent tables to use for filtering / create dropdowns使用 Flask Admin,我很难理解如何从父表和祖父表中检索列以用于过滤/创建下拉列表
class Project(db.Model):
project_id=db.Column(db.Integer, primary_key=True)
title=db.Column(db.String(100), nullable=False)
def __repr__(self):
return self.title
def __str__(self):
return self.title
def get_id(self):
return self.project_id
class Story(db.Model):
story_id=db.Column(db.Integer, primary_key=True)
description=db.Column(db.String(), nullable=False)
project_id=db.Column(db.Integer, db.ForeignKey(Project.project_id))
project=db.relationship(Project)
def __repr__(self):
return self.description
def __str__(self):
return self.description
def get_id(self):
return self.story_id
class Task(db.Model):
task_id=db.Column(db.Integer, primary_key=True)
description=db.Column(db.String(), nullable=False)
story_id=db.Column(db.Integer, db.ForeignKey(Story.story_id))
story=db.relationship(Story)
def __repr__(self):
return self.description
def __str__(self):
return self.description
def get_id(self):
return self.task_id
class TaskModelView(ModelView):
create_modal = False
edit_modal = False
can_set_page_size = True
page_size = 20
column_display_pk = True
column_display_all_relations = True
admin.add_view(TaskModelView(Task, db.session))
When dealing with the Tasks list, I see the Story description with no problems and can use that to filter the list but how would I obtain the Project title and be able to filter on that column?在处理任务列表时,我看到故事描述没有问题,可以使用它来过滤列表,但我如何获得项目标题并能够过滤该列?
Have been searching the docs but obviously missing something ..一直在搜索文档,但显然遗漏了一些东西..
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