old_contents: from flask import Markup
  from flask_appbuilder.models.mixins import AuditMixin, BaseMixin, FileColumn, ImageColumn
  from sqlalchemy import Table, Column, Integer, String, Boolean, ForeignKey
  from sqlalchemy.orm import relationship
  from sqlalchemy.ext.hybrid import hybrid_property
  from flask_appbuilder import Base
  from flask_appbuilder.security.models import User
  from flask_appbuilder import Base
  
  """
  
  You can use the extra Flask-AppBuilder fields and Mixin's
  
  AuditMixin will add automatic timestamp of created and modified by who
  
  
  """
  
  class Project(AuditMixin, Base):
      __tablename__ = "project"
      id = Column(Integer, primary_key=True)
      name =  Column(String(150), unique = True, nullable=False)
      
  class ProjectFiles(Base):
      __tablename__ = "project_files"
      id = Column(Integer, primary_key=True)
      project_id = Column(Integer, ForeignKey('project.id'))
      project = relationship("Project")
      file = Column(FileColumn, nullable=False)
      
      @hybrid_property
      def download(self):
          print "HOIHEEE", '<a href="/projectfilesgeneralview/download/' + str(self.file) + '"Download</a>'
          return '<a href="/projectfilesgeneralview/download/' + str(self.file) + '"Download</a>'
          
  
new_contents: from flask import Markup
  from flask_appbuilder.models.mixins import AuditMixin, BaseMixin, FileColumn, ImageColumn
  from sqlalchemy import Table, Column, Integer, String, Boolean, ForeignKey
  from sqlalchemy.orm import relationship
  from sqlalchemy.ext.hybrid import hybrid_property
  from flask_appbuilder import Base
  from flask_appbuilder.security.models import User
  from flask_appbuilder import Base
  
  """
  
  You can use the extra Flask-AppBuilder fields and Mixin's
  
  AuditMixin will add automatic timestamp of created and modified by who
  
  
  """
  
  class Project(AuditMixin, Base):
      __tablename__ = "project"
      id = Column(Integer, primary_key=True)
      name =  Column(String(150), unique = True, nullable=False)
      
  class ProjectFiles(Base):
      __tablename__ = "project_files"
      id = Column(Integer, primary_key=True)
      project_id = Column(Integer, ForeignKey('project.id'))
      project = relationship("Project")
      file = Column(FileColumn, nullable=False)
      
      def download(self):
          print "HOIHEEE", '<a href="/projectfilesgeneralview/download/' + str(self.file) + '"Download</a>'
          return Markup('<a href="/projectfilesgeneralview/download/' + str(self.file) + '"Download</a>')
          
  
subject: Update models.py