Coverage for docs_src/tutorial/relationship_attributes/back_populates/tutorial001_py39.py: 100%

1from typing import Optional 5 ctx1abcde

2 

3from sqlmodel import Field, Relationship, Session, SQLModel, create_engine, select 5 ctx1abcde

4 

5 

6class Team(SQLModel, table=True): 5 ctx1abcde

7 id: Optional[int] = Field(default=None, primary_key=True) 5 ctx1abcde

8 name: str = Field(index=True) 5 ctx1abcde

9 headquarters: str 5 ctx1abcde

10 

11 heroes: list["Hero"] = Relationship() 5 ctx1abcde

12 

13 

14class Hero(SQLModel, table=True): 5 ctx1abcde

15 id: Optional[int] = Field(default=None, primary_key=True) 5 ctx1abcde

16 name: str = Field(index=True) 5 ctx1abcde

17 secret_name: str 5 ctx1abcde

18 age: Optional[int] = Field(default=None, index=True) 5 ctx1abcde

19 

20 team_id: Optional[int] = Field(default=None, foreign_key="team.id") 5 ctx1abcde

21 team: Optional[Team] = Relationship() 5 ctx1abcde

22 

23 

24sqlite_file_name = "database.db" 5 ctx1abcde

25sqlite_url = f"sqlite:///{sqlite_file_name}" 5 ctx1abcde

26 

27engine = create_engine(sqlite_url, echo=True) 5 ctx1abcde

28 

29 

30def create_db_and_tables(): 5 ctx1abcde

31 SQLModel.metadata.create_all(engine) 5 ctx1abcde

32 

33 

34def create_heroes(): 5 ctx1abcde

35 with Session(engine) as session: 5 ctx1abcde

36 team_preventers = Team(name="Preventers", headquarters="Sharp Tower") 5 ctx1abcde

37 team_z_force = Team(name="Z-Force", headquarters="Sister Margaret's Bar") 5 ctx1abcde

38 

39 hero_deadpond = Hero( 5 ctx1abcde

40 name="Deadpond", secret_name="Dive Wilson", team=team_z_force 

41 ) 

42 hero_rusty_man = Hero( 5 ctx1abcde

43 name="Rusty-Man", secret_name="Tommy Sharp", age=48, team=team_preventers 

44 ) 

45 hero_spider_boy = Hero(name="Spider-Boy", secret_name="Pedro Parqueador") 5 ctx1abcde

46 session.add(hero_deadpond) 5 ctx1abcde

47 session.add(hero_rusty_man) 5 ctx1abcde

48 session.add(hero_spider_boy) 5 ctx1abcde

49 session.commit() 5 ctx1abcde

50 

51 session.refresh(hero_deadpond) 5 ctx1abcde

52 session.refresh(hero_rusty_man) 5 ctx1abcde

53 session.refresh(hero_spider_boy) 5 ctx1abcde

54 

55 print("Created hero:", hero_deadpond) 5 ctx1abcde

56 print("Created hero:", hero_rusty_man) 5 ctx1abcde

57 print("Created hero:", hero_spider_boy) 5 ctx1abcde

58 

59 hero_spider_boy.team = team_preventers 5 ctx1abcde

60 session.add(hero_spider_boy) 5 ctx1abcde

61 session.commit() 5 ctx1abcde

62 session.refresh(hero_spider_boy) 5 ctx1abcde

63 print("Updated hero:", hero_spider_boy) 5 ctx1abcde

64 

65 hero_black_lion = Hero(name="Black Lion", secret_name="Trevor Challa", age=35) 5 ctx1abcde

66 hero_sure_e = Hero(name="Princess Sure-E", secret_name="Sure-E") 5 ctx1abcde

67 team_wakaland = Team( 5 ctx1abcde

68 name="Wakaland", 

69 headquarters="Wakaland Capital City", 

70 heroes=[hero_black_lion, hero_sure_e], 

71 ) 

72 session.add(team_wakaland) 5 ctx1abcde

73 session.commit() 5 ctx1abcde

74 session.refresh(team_wakaland) 5 ctx1abcde

75 print("Team Wakaland:", team_wakaland) 5 ctx1abcde

76 

77 hero_tarantula = Hero(name="Tarantula", secret_name="Natalia Roman-on", age=32) 5 ctx1abcde

78 hero_dr_weird = Hero(name="Dr. Weird", secret_name="Steve Weird", age=36) 5 ctx1abcde

79 hero_cap = Hero( 5 ctx1abcde

80 name="Captain North America", secret_name="Esteban Rogelios", age=93 

81 ) 

82 

83 team_preventers.heroes.append(hero_tarantula) 5 ctx1abcde

84 team_preventers.heroes.append(hero_dr_weird) 5 ctx1abcde

85 team_preventers.heroes.append(hero_cap) 5 ctx1abcde

86 session.add(team_preventers) 5 ctx1abcde

87 session.commit() 5 ctx1abcde

88 session.refresh(hero_tarantula) 5 ctx1abcde

89 session.refresh(hero_dr_weird) 5 ctx1abcde

90 session.refresh(hero_cap) 5 ctx1abcde

91 print("Preventers new hero:", hero_tarantula) 5 ctx1abcde

92 print("Preventers new hero:", hero_dr_weird) 5 ctx1abcde

93 print("Preventers new hero:", hero_cap) 5 ctx1abcde

94 

95 

96def select_heroes(): 5 ctx1abcde

97 with Session(engine) as session: 5 ctx1abcde

98 statement = select(Team).where(Team.name == "Preventers") 5 ctx1abcde

99 result = session.exec(statement) 5 ctx1abcde

100 team_preventers = result.one() 5 ctx1abcde

101 

102 print("Preventers heroes:", team_preventers.heroes) 5 ctx1abcde

103 

104 

105def update_heroes(): 5 ctx1abcde

106 with Session(engine) as session: 5 ctx1abcde

107 hero_spider_boy = session.exec( 5 ctx1abcde

108 select(Hero).where(Hero.name == "Spider-Boy") 

109 ).one() 

110 

111 preventers_team = session.exec( 5 ctx1abcde

112 select(Team).where(Team.name == "Preventers") 

113 ).one() 

114 

115 print("Hero Spider-Boy:", hero_spider_boy) 5 ctx1abcde

116 print("Preventers Team:", preventers_team) 5 ctx1abcde

117 print("Preventers Team Heroes:", preventers_team.heroes) 5 ctx1abcde

118 

119 hero_spider_boy.team = None 5 ctx1abcde

120 

121 print("Spider-Boy without team:", hero_spider_boy) 5 ctx1abcde

122 

123 print("Preventers Team Heroes again:", preventers_team.heroes) 5 ctx1abcde

124 

125 session.add(hero_spider_boy) 5 ctx1abcde

126 session.commit() 5 ctx1abcde

127 print("After committing") 5 ctx1abcde

128 

129 session.refresh(hero_spider_boy) 5 ctx1abcde

130 print("Spider-Boy after commit:", hero_spider_boy) 5 ctx1abcde

131 

132 print("Preventers Team Heroes after commit:", preventers_team.heroes) 5 ctx1abcde

133 

134 

135def main(): 5 ctx1abcde

136 create_db_and_tables() 5 ctx1abcde

137 create_heroes() 5 ctx1abcde

138 select_heroes() 5 ctx1abcde

139 update_heroes() 5 ctx1abcde

140 

141 

142if __name__ == "__main__": 5 ctx1abcde

143 main()