mootensai\enhancedgii\BaseGenerator::generateRelations PHP Method

    protected function generateRelations()
    {
        if (!$this->generateRelations === self::RELATIONS_NONE) {
            return [];
        }
        $db = $this->getDbConnection();
        $relations = [];
        foreach ($this->getSchemaNames() as $schemaName) {
            foreach ($db->getSchema()->getTableSchemas($schemaName) as $table) {
                $className = $this->generateClassName($table->fullName);
                foreach ($table->foreignKeys as $refs) {
                    $refTable = $refs[0];
                    $refTableSchema = $db->getTableSchema($refTable);
                    if ($refTableSchema === null) {
                        // Foreign key could point to non-existing table: https://github.com/yiisoft/yii2-gii/issues/34
                        continue;
                    }
                    unset($refs[0]);
                    $fks = array_keys($refs);
                    $refClassName = $this->generateClassName($refTable);
                    // Add relation for this table
                    $link = $this->generateRelationLink(array_flip($refs));
                    $relationName = $this->generateRelationName($relations, $table, $fks[0], false);
                    $relFK = key($refs);
                    $relations[$table->fullName][lcfirst($relationName)] = [self::REL_TYPE => "return \$this->hasOne(\\{$this->nsModel}\\{$refClassName}::className(), {$link});", self::REL_CLASS => $refClassName, self::REL_IS_MULTIPLE => 0, self::REL_TABLE => $refTable, self::REL_PRIMARY_KEY => $refs[$relFK], self::REL_FOREIGN_KEY => $relFK, self::REL_IS_MASTER => in_array($relFK, $table->getColumnNames()) ? 1 : 0];
                    // Add relation for the referenced table
                    $hasMany = $this->isHasManyRelation($table, $fks);
                    $link = $this->generateRelationLink($refs);
                    $relationName = $this->generateRelationName($relations, $refTableSchema, $className, $hasMany);
                    $relations[$refTableSchema->fullName][lcfirst($relationName)] = [self::REL_TYPE => "return \$this->" . ($hasMany ? 'hasMany' : 'hasOne') . "(\\{$this->nsModel}\\{$className}::className(), {$link});", self::REL_CLASS => $className, self::REL_IS_MULTIPLE => $hasMany, self::REL_TABLE => $table->fullName, self::REL_PRIMARY_KEY => $refs[key($refs)], self::REL_FOREIGN_KEY => key($refs), self::REL_IS_MASTER => in_array($relFK, $refTableSchema->getColumnNames()) ? 1 : 0];
                }
                if (($junctionFks = $this->checkPivotTable($table)) === false) {
                    continue;
                }
                $relations = $this->generateManyManyRelations($table, $junctionFks, $relations);
            }
        }
        if ($this->generateRelations === self::RELATIONS_ALL_INVERSE) {
            return $this->addInverseRelations($relations);
        }
        return $relations;
    }