Question

How do I create a list view that calls multiple classes/models from my model.py file?

I have created my project, and app and my models. The models use a one-to-many relationship.

I am able to create a listview based on calling a single model, but not using multiple models (in this scenario 7 models).

Here are the models I want to call, with the the required model values that I want displayed in the listview are denoted by **:

class TypeAchievement(models.Model):
  typeAchievementID = models.AutoField(primary_key=True, db_column="TypeAchievementID")
  languageCodeID = models.ForeignKey(LanguageCode, db_column="LanguageCodeID")
  **typeAchievementDescriptionIntl = models.CharField(max_length=255, db_column="TypeAchievementDescriptionIntl")**
  typeAchievementDescriptionEng = models.CharField(max_length=255, db_column="TypeAchievementDescriptionEng")
  typeAchievementAltID = models.IntegerField(db_column="TypeAchievementAltID")
  class Meta:
    db_table="TypeAchievement"

class RIAchievement(models.Model):
  riAchievementID = models.AutoField(primary_key=True, db_column="RIAchievementID")
  userLanguageVersionID = models.ForeignKey(UserLanguageVersion, db_column="UserLanguageVersionID")
  typeAchievementID = models.ForeignKey(TypeAchievement, db_column="TypeAchievementID")
  **riAchievementTypeUserDescription = models.CharField(max_length=255, blank=True, null=True, db_column="RIAchievementTypeUserDescription")**
  **riAchievementDescription = models.TextField(max_length=2000, db_column="RIAchievementDescription")**
  auth_user_id = models.ForeignKey(auth_user, db_column="auth_user_id")
  class Meta:
    db_table="RIAchievement"

class UserLanguageVersion(models.Model):
  userLanguageVersionID = models.AutoField(primary_key=True, db_column="UserLanguageVersionID")
  auth_user_id = models.ForeignKey(auth_user, db_column="auth_user_id")
  languageCodeID = models.ForeignKey(LanguageCode, db_column="LanguageCodeID")
  class Meta:
    db_table="UserLanguageVersion"

class auth_user(models.Model):
  **auth_user_id = models.AutoField(primary_key=True, db_column="id")**
  username = models.CharField(max_length=30, unique=True, db_column="username")
  first_name = models.CharField(max_length=30, db_column="first_name")
  last_name = models.CharField(max_length=30, db_column="last_name")
  email = models.CharField(max_length=75, db_column="email")
  password = models.CharField(max_length=128, db_column="password")
  is_staff = models.BooleanField(db_column="is_staff")
  is_active = models.BooleanField(db_column="is_active")
  is_supervisor = models.BooleanField(db_column="is_supervisor")
  last_login = models.DateTimeField(db_column="last_login")
  date_joined = models.DateTimeField(db_column="date_joined")
  class Meta:
    db_table="auth_user"

class LanguageCode(models.Model):
  languagecodeID = models.AutoField(primary_key=True, db_column="LanguageCodeID")
  **languageCodeDescription = models.CharField(max_length=10, db_column="LanguageCodeDescription")**
  baseLanguageCode = models.CharField(max_length=10, db_column="BaseLanguageCode")
  languageNameEng = models.CharField(max_length=255, db_column="LanguageNameEng")
  altLanguageNameEng = models.CharField(max_length=255, blank=True, null=True, db_column="AltLanguageNameEng")
  **languageNameNative = models.CharField(max_length=255, db_column="LanguageNameNative")**
  altLanguageNameNative = models.CharField(max_length=255, blank=True, null=True, db_column="AltLanguageNameNative")
  **iso639_1 = models.CharField(max_length=10, blank=True, null=True, db_column="ISO639_1")**
  iso639_2T = models.CharField(max_length=10, db_column="ISO639_2T")
  iso639_2B = models.CharField(max_length=10, db_column="ISO639_2B")
  iso639_X = models.CharField(max_length=10, db_column="ISO639_X")
  languageDirectionID = models.ForeignKey(LanguageDirection, default=1, db_column="LanguageDirectionID")
  class Meta:
    db_table="LanguageCode"

class LanguageDirection(models.Model):
  languageDirectionID = models.AutoField(primary_key=True, db_column="LanguageDirectionID")
  **languageDirectionDescription = models.CharField(max_length=20, db_column="LanguageDirectionDescription")**
  **languageDirDescription = models.CharField(max_length=20, db_column="LanguageDirDescription")**
  **textAlign = models.CharField(max_length=20, db_column="TextAlign")**
  **oppositeLanguageDirectionDescription = models.CharField(max_length=20, db_column="OppositeLanguageDirectionDescription")**
  **oppositeLanguageDirDescription = models.CharField(max_length=20, db_column="OppositeLanguageDirDescription")**
  **oppositeTextAlign = models.CharField(max_length=20, db_column="OppositeTextAlign")**
  class Meta:
    db_table="LanguageDirection"

class Flag(models.Model):
  flagID = models.AutoField(primary_key=True, db_column="FlagID")
  languageCodeID = models.ForeignKey(LanguageCode, db_column="LanguageCodeID")
  **flagIconPath = models.CharField(max_length=255, db_column="FlagIconPath")**
  flagDescription = models.CharField(max_length=255, db_column="FlagDescription")
  flagInformation = models.CharField(max_length=255, db_column="FlagInformation")
  class Meta:
    db_table="Flag"

Answer 1

You can get linked objects from the main one. In your case – iterate over list of RIAchievement and get other data as {{ riachievement.userLanguageVersionID.languageCodeID.languageDirectionID.textAlign }}

P.S. Also, please format code according to pep8 even it is autogenerated from the database.