const IntegrationBudgets = sequelize.define('integrationBudgets', {
    partnerComment: {      type: DataTypes.STRING,    },
    refusalComment: {      type: DataTypes.STRING,    },
    state: {      type: DataTypes.ENUM(['initializing', 'waiting', 'accepted', 'refused']),},
    createdAt: {      type: DataTypes.DATE,    },
    updatedAt: {      type: DataTypes.DATE,    },
  }, {
    tableName: 'integration_budgets',
    underscored: true,
    schema: process.env.DATABASE_SCHEMA,
  });
  IntegrationBudgets.associate = (models) => {
    IntegrationBudgets.belongsTo(models.places, {
      foreignKey: {
        name: 'placeIdKey',
        field: 'place_id',
      },
      as: 'place',
    });
    IntegrationBudgets.belongsTo(models.integrations, {
      foreignKey: {
        name: 'placeIdKey',
        field: 'place_id',
      },
      as: 'integration',
    });
    IntegrationBudgets.hasMany(models.integrationBudgetEntries, {
      foreignKey: {
        name: 'integrationBudgetIdKey',
        field: 'integration_budget_id',
      },
      as: 'integrationBudgetIntegrationBudgetEntries',
    });
  };
  const IntegrationBudgetEntries = sequelize.define('integrationBudgetEntries', {
    displayName: {      type: DataTypes.STRING,    },
    amount: {      type: DataTypes.INTEGER,    },
    createdAt: {      type: DataTypes.DATE,    },
    updatedAt: {      type: DataTypes.DATE,    },
  }, {
    tableName: 'integration_budget_entries',
    underscored: true,
    schema: process.env.DATABASE_SCHEMA,
  });
  IntegrationBudgetEntries.associate = (models) => {
    IntegrationBudgetEntries.belongsTo(models.repartitionKeys, {
      foreignKey: {
        name: 'repartitionKeyIdKey',
        field: 'repartition_key_id',
      },
      as: 'repartitionKey',
    });
    IntegrationBudgetEntries.belongsTo(models.integrationBudgets, {
      foreignKey: {
        name: 'integrationBudgetIdKey',
        field: 'integration_budget_id',
      },
      as: 'integrationBudget',
    });
  };
  return IntegrationBudgetEntries;
};
The /forest/integration-budget-entries.js file is untouched.
The  /forest/integration-budgets.js is as following, 2 smart actions :
collection('integrationBudgets', {
  actions: [{
    name: 'Demander validation budget',
    type: 'single',
  }, {
    name: 'Ajouter ligne budget',
    type: 'single',
    fields: [{
      field: 'Clef de repartition',
      type: 'Enum',
      enums: []
    }, {
      field: 'Libelle',
      type: 'String',
    }, {
      field: 'Montant',
      type: 'Number'
    }],
    hooks: {
      load: ({ fields, record }) => models.repartitionKeys.findAll({
        where: { place_id: record.place.id }
      }).then(repartitionKeys => {
        fields['Clef de repartition'].enums = repartitionKeys.map(repartitionKey => `${repartitionKey.letter} - ${repartitionKey.displayName} - ${repartitionKey.feesTotal}`);
        return fields;
      })
    }
  }],
  fields: [],
  segments: [],
});