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models.py
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models.py
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from sqlalchemy import (Column, Integer, Float, Date, String,
ForeignKey, Table, UniqueConstraint, CheckConstraint)
from sqlalchemy.orm import relationship
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.sql.functions import current_timestamp, now
Base = declarative_base()
# Association table for M-M relationship Exercises-Muscles using
# class Table()
exercise_muscle = Table(
"exercise_muscle",
Base.metadata,
Column("exercise_muscle_id", Integer, primary_key=True),
Column("exercise_id", Integer, ForeignKey("exercise.exercise_id")),
Column("muscle_id", Integer, ForeignKey("muscle.muscle_id"))
)
class Program(Base):
__tablename__ = "program"
__table_args__ = (
CheckConstraint("""date_start < date_end
OR
(date_start IS NULL OR date_end IS NULL)"""),
)
program_id = Column(Integer, primary_key=True)
program_desc = Column(String)
date_start = Column(Date)
date_end = Column(Date)
objective = Column(String)
blocks = relationship("Block", cascade="all, delete-orphan", back_populates="program")
def __repr__(self):
return (f"<Program(id={self.program_id}," +
f"desc={self.program_desc}," +
f"date_start={self.date_start}," +
f"date_end={self.date_end}," +
f"objective={self.objective})>")
class Block(Base):
__tablename__ = "block"
block_id = Column(Integer, primary_key=True)
block_desc = Column(String)
program_id = Column(Integer, ForeignKey("program.program_id"),
nullable=False)
program = relationship("Program", back_populates="blocks")
workouts = relationship("Workout", cascade="all, delete-orphan", back_populates="block")
def __repr__(self):
return (f"<Block(id={self.block_id}," +
f"desc={self.block_desc}," +
f"program={self.program.program_desc})>")
class Workout(Base):
__tablename__ = "workout"
__table_args__ = (
UniqueConstraint("block_id", "week", "day"),
UniqueConstraint("block_id", "date_workout")
)
workout_id = Column(Integer, primary_key=True)
workout_desc = Column(String)
block_id = Column(Integer, ForeignKey("block.block_id"),
nullable=False)
date_workout = Column(Date)
week = Column(Integer, CheckConstraint("week > 0"))
day = Column(Integer, CheckConstraint("day > 0"))
block = relationship("Block", back_populates="workouts")
workout_sets = relationship("Workout_set", cascade="all, delete-orphan", back_populates="workout")
log_workout = relationship("Log_workout", cascade="all, delete-orphan", back_populates="workout",
uselist=False)
def __repr__(self):
return (f"<Workout(id={self.workout_id}," +
f"name={self.workout_desc}," +
f"program={self.block.program.program_desc}," +
f"block={self.block.block_desc}," +
f"date={self.date_workout}," +
f"week={self.week}," +
f"day={self.day})>")
class Exercise(Base):
__tablename__ = "exercise"
exercise_id = Column(Integer, primary_key=True)
exercise_desc = Column(String, nullable=False)
historic_prs = relationship("Historic_pr", back_populates="exercise")
workout_sets = relationship("Workout_set", back_populates="exercise")
# This is defined for the case of using Table() class
# as association table for Exercises-Muscles
muscles = relationship("Muscle", secondary=exercise_muscle,
cascade="all, delete", back_populates="exercises")
# # If using Association Object
# muscles = relationship("Exercise_muscle", back_populates="exercise")
def __repr__(self):
return (f"<Exercise(id={self.exercise_id}," +
f"desc={self.exercise_desc})>")
# # Many-to-many association Exercises-Muscles via Association Object
# class Exercise_muscle(Base):
# __tablename__ = "exercise_muscle"
# exercise_muscle_id = Column(Integer, primary_key=True)
# exercise_id = Column(Integer, ForeignKey("exercise.exercise_id"),
# nullable=False)
# muscle_id = Column(Integer, ForeignKey("muscle.muscle_id"),
# nullable=False)
# muscle = relationship("Muscle", back_populates="exercises")
# exercise = relationship("Exercise", back_populates="muscles")
class Muscle(Base):
__tablename__ = "muscle"
muscle_id = Column(Integer, primary_key=True)
muscle_desc = Column(String, nullable=False)
# This is defined for the case of using Table() class
# as association table for Exercises-Muscles
exercises = relationship("Exercise", secondary=exercise_muscle,
cascade="all, delete", back_populates="muscles")
# # If using Association Object ()
# exercises = relationship("Exercise_muscle", back_populates="muscle")
def __repr__(self):
return (f"<Muscle(id={self.muscle_id}," +
f"desc={self.muscle_desc})>")
class Workout_set(Base):
__tablename__ = "workout_set"
__table_args__ = (
# UniqueConstraint("workout_id", "exercise_id", "set_id"),
CheckConstraint("""min_rpe <= max_rpe
OR
(min_rpe IS NULL OR max_rpe IS NULL)"""),
)
workout_set_id = Column(Integer, primary_key=True)
workout_id = Column(Integer, ForeignKey("workout.workout_id"),
nullable=False)
exercise_id = Column(Integer, ForeignKey("exercise.exercise_id"),
nullable=False)
set_id = Column(Integer, CheckConstraint("set_id > 0"),
nullable=False)
no_reps = Column(Integer, CheckConstraint("no_reps >= 0"))
weight = Column(Float, CheckConstraint("weight >= 0"))
perc_rm = Column(Float, CheckConstraint("0 < perc_rm AND perc_rm <= 100"))
min_rpe = Column(Integer,
CheckConstraint("0 <= min_rpe AND min_rpe <= 10"))
max_rpe = Column(Integer,
CheckConstraint("0 <= max_rpe AND max_rpe <= 10"))
rest_min = Column(Float, CheckConstraint("rest_min >= 0"))
log_set = relationship("Log_set", cascade="all, delete-orphan", back_populates="workout_set",
uselist=False)
workout = relationship("Workout", back_populates="workout_sets")
exercise = relationship("Exercise", back_populates="workout_sets")
def __repr__(self):
return (f"<Workout_set(id={self.workout_set_id}," +
f"program={self.workout.block.program.program_desc}," +
f"block={self.workout.block.block_desc}," +
f"date={self.workout.date_workout}," +
f"week={self.workout.week}," +
f"day={self.workout.day}," +
f"exercise={self.exercise.exercise_desc}," +
f"set_id={self.set_id})>")
class Log_workout(Base):
__tablename__ = "log_workout"
__table_args__ = (
CheckConstraint("date_workout_done <= date_reg"),
)
log_workout_id = Column(Integer, primary_key=True)
workout_id = Column(Integer, ForeignKey("workout.workout_id"),
unique=True, nullable=False)
date_workout_done = Column(Date)
duration_min = Column(Float, CheckConstraint("duration_min > 0"))
intensity = Column(Float,
CheckConstraint("0 <= intensity AND intensity <= 10"))
comment_workout = Column(String)
date_reg = Column(Date, nullable=False, onupdate=current_timestamp(),
server_default=now(), server_onupdate=now())
log_sets = relationship("Log_set", cascade="all, delete-orphan", back_populates="log_workout")
workout = relationship("Workout", back_populates="log_workout")
def __repr__(self):
return (f"<Log_workout(id={self.log_workout_id}," +
f"date={self.date_workout_done}," +
f"program={self.workout.block.program.program_desc}," +
f"block={self.workout.block.block_desc}," +
f"week={self.workout.week}," +
f"day={self.workout.day})>")
class Log_set(Base):
__tablename__ = "log_set"
log_set_id = Column(Integer, primary_key=True)
workout_set_id = Column(Integer, ForeignKey("workout_set.workout_set_id"),
unique=True, nullable=False)
log_workout_id = Column(Integer, ForeignKey("log_workout.log_workout_id"),
nullable=False)
no_reps_done = Column(Integer, CheckConstraint("no_reps_done >= 0"))
weight_done = Column(Float, CheckConstraint("weight_done >= 0"))
rpe_done = Column(Integer,
CheckConstraint("0 <= rpe_done AND rpe_done <= 10"))
comment_set = Column(String)
log_workout = relationship("Log_workout", back_populates="log_sets")
workout_set = relationship("Workout_set", back_populates="log_set")
def __repr__(self):
return (f"<Log_set(id={self.log_set_id}," +
f"date={self.log_workout.date_workout_done}," +
f"program={self.log_workout.workout.block.program.program_desc}," +
f"block={self.log_workout.workout.block.block_desc}," +
f"week={self.log_workout.workout.week}," +
f"day={self.log_workout.workout.day}," +
f"exercise={self.workout_set.exercise.exercise_desc}," +
f"set_id={self.workout_set.set_id})>")
class Historic_pr(Base):
__tablename__ = "historic_pr"
__table_args__ = (
CheckConstraint("date_pr <= date_reg"),
)
pr_id = Column(Integer, primary_key=True)
date_pr = Column(Date)
exercise_id = Column(Integer, ForeignKey("exercise.exercise_id"),
nullable=False)
no_reps_pr = Column(Integer, CheckConstraint("no_reps_pr > 0"),
nullable=False)
weight_pr = Column(Float, CheckConstraint("weight_pr > 0"),
nullable=False)
date_reg = Column(Date, nullable=False,
server_default=now(), server_onupdate=now())
exercise = relationship("Exercise", back_populates="historic_prs")
def __repr__(self):
return (f"<Historic_pr(id={self.pr_id}," +
f"exercise={self.exercise.exercise_desc}," +
f"date={self.date_pr}," +
f"no_reps={self.no_reps_pr}," +
f"weight={self.weight_pr})>")