implement skil and language level

ki/models.py

@@ -1,19 +1,10 @@
 from datetime import datetime
 
-from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Table
+from sqlalchemy import Column, Integer, SmallInteger, String, DateTime, ForeignKey
 from sqlalchemy.orm import relationship
 
 from app import db
 
-user_skill_table = Table("user_skill", db.Model.metadata,
-                         Column("user_id", Integer, ForeignKey("user.id")),
-                         Column("skill_id", Integer, ForeignKey("skill.id")))
-
-user_language_table = Table(
-    "user_language", db.Model.metadata,
-    Column("user_id", Integer, ForeignKey("user.id")),
-    Column("language_id", String(2), ForeignKey("language.id")))
-
 
 class User(db.Model):
     __tablename__ = "user"
@@ -28,12 +19,8 @@ class User(db.Model):
 
     contacts = relationship("Contact")
     address = relationship("Address", uselist=False, back_populates="user")
-    skills = relationship("Skill",
-                          secondary=user_skill_table,
-                          back_populates="users")
-    languages = relationship("Language",
-                             secondary=user_language_table,
-                             back_populates="users")
+    skills = relationship("UserSkill", back_populates="users")
+    languages = relationship("UserLanguage", "users")
 
 
 class Contact(db.Model):
@@ -75,23 +62,41 @@ class Skill(db.Model):
     id = Column(Integer, primary_key=True)
     name = Column(String(25), unique=True, nullable=False)
 
-    users = relationship("User",
-                         secondary=user_skill_table,
-                         back_populates="skills")
+    users = relationship("User", back_populates="skills")
 
     def to_dict(self):
         return {"id": self.id, "name": self.name}
 
 
+class UserSkill(db.Model):
+    __tablename__ = "user_skill"
+
+    user_id = Column(Integer, ForeignKey("user.id"), primary_key=True)
+    skill_id = Column(Integer, ForeignKey("skill.id"), primary_key=True)
+    level = Column(SmallInteger)
+
+    user = relationship("User", back_populates="skills")
+    skill = relationship("Skill", back_populates="users")
+
+
 class Language(db.Model):
     __tablename__ = "language"
 
     id = Column(String(2), primary_key=True)
     name = Column(String(25), nullable=False)
 
-    users = relationship("User",
-                         secondary=user_language_table,
-                         back_populates="languages")
+    users = relationship("UserLanguage", back_populates="languages")
 
     def to_dict(self):
         return {"id": self.id, "name": self.name}
+
+
+class UserLanguage(db.Model):
+    __tablename__ = "user_language"
+
+    user_id = Column(Integer, ForeignKey("user.id"), primary_key=True)
+    language_id = Column(Integer, ForeignKey("language.id"), primary_key=True)
+    level = Column(SmallInteger)
+
+    user = relationship("User", back_populates="languages")
+    language = relationship("Language", back_populates="users")