Functional foreign key account selector and path generator

api/app/account/models.py

@@ -6,6 +6,7 @@ from fastapi_filter.contrib.sqlalchemy import Filter
 from pydantic.json_schema import SkipJsonSchema
 from sqlmodel import Field, SQLModel, select, Relationship
 from pydantic import Field as PydField
+from sqlalchemy.sql import text
 
 
 class AccountBase(SQLModel):
@@ -13,7 +14,7 @@ class AccountBase(SQLModel):
     parent_account_id: Optional[UUID] = Field(default=None, foreign_key="account.id")
 
 class AccountBaseId(AccountBase):
-    id: UUID | None = Field(default_factory=uuid4, primary_key=True)
+    id: UUID | None = Field(default=uuid4(), primary_key=True)
     type: str = Field(index=True)
     path: str = Field(index=True)
 
@@ -25,11 +26,15 @@ class Account(AccountBaseId, table=True):
     children_accounts: list["Account"] = Relationship(back_populates='parent_account')
 
     def get_child_path(self):
-        return f"{self.path}/{self.name}"
+        return f"{self.path}{self.name}/"
 
     def get_root_path(self):
         root = "/Categories" if self.is_category() else "/Accounts"
-        return f"{root}/{self.type}"
+        return f"{root}/{self.type}/"
+
+    def update_children_path(self, session, old_path):
+        request = f"UPDATE {self.__tablename__} SET path=REPLACE(path, '{old_path}', '{self.path}') WHERE path LIKE '{old_path}{self.name }/%'"
+        session.exec(text(request))
 
     def is_category(self):
         return self.type in [v.value for v in CategoryType]
@@ -42,8 +47,17 @@ class Account(AccountBaseId, table=True):
         return parent.get_child_path()
 
     @classmethod
-    def schema_to_model(cls, session, schema):
-        model = cls.model_validate(schema)
+    def schema_to_model(cls, session, schema, model=None):
+
+        try:
+            if model:
+                model = cls.model_validate(model, update=schema)
+            else:
+                schema['path'] = ""
+                model = cls.model_validate(schema)
+        except Exception as e:
+            print(e)
+
         model.path = model.get_path(session)
         return model
 
@@ -76,19 +90,13 @@ class Account(AccountBaseId, table=True):
     def get(cls, session, account_id):
         return session.get(Account, account_id)
 
-    def update_children_path(self, session):
-        for child in self.children_accounts:
-            child.path = self.get_child_path()
-            session.add(child)
-            child.update_children_path(session)
-
     @classmethod
     def update(cls, session, account_db, account_data):
         previous_path = account_db.path
-        account_db.sqlmodel_update(cls.schema_to_model(session, account_data))
-        session.add(account_db)
+        account_db.sqlmodel_update(cls.schema_to_model(session, account_data, account_db))
         if previous_path != account_db.path:
-            account_db.update_children_path(session, account_db)
+            account_db.update_children_path(session, previous_path)
+        session.add(account_db)
         session.commit()
         session.refresh(account_db)
         return account_db
@@ -137,7 +145,7 @@ class Liability(Enum):
 class AccountWrite(AccountBase):
     type: Asset | Liability = Field()
     path: SkipJsonSchema[str] = Field(default="")
-    parent_account_id: UUID = PydField(default=None, json_schema_extra={
+    parent_account_id: UUID | None = PydField(default=None, json_schema_extra={
         "foreign_key": {
             "reference": {
                 "resource": "accounts",

gui/app/src/common/crud/fields/union-enum.tsx

@@ -23,6 +23,21 @@ const UnionEnumField = (props: FieldProps) => {
   } = props;
 
   const enumOptions: any[] = []
+
+  if (options.length == 2 && (options[0].type == "null" || options[1].type == "null")) {
+    const { SchemaField: _SchemaField } = registry.fields;
+
+    let opt_schema = {...schema}
+    delete(opt_schema.anyOf)
+
+    if (options[0].type == "null") {
+      opt_schema = {...opt_schema, ...options[1]}
+    } else if (options[1].type == "null") {
+      opt_schema = {...opt_schema, ...options[0]}
+    }
+    return <_SchemaField {...props} schema={opt_schema} uiSchema={uiSchema} />
+  }
+
   for (let opt of options) {
     if (!opt.hasOwnProperty('enum')) {
       return (<AnyOfField {...props} />)

gui/app/src/common/crud/widgets/foreign-key.tsx

@@ -2,7 +2,7 @@ import { WidgetProps } from '@rjsf/utils';
 import { Autocomplete } from "@mui/material";
 import { useState, useEffect } from "react";
 import TextField from "@mui/material/TextField";
-import { useList, useOne } from "@refinedev/core";
+import {BaseRecord, useList, useOne} from "@refinedev/core";
 
 export const ForeignKeyWidget = (props: WidgetProps) => {
   const resource = props.schema.foreign_key.reference.resource
@@ -10,7 +10,7 @@ export const ForeignKeyWidget = (props: WidgetProps) => {
 
   const valueResult = useOne({
     resource: resource,
-    id: props.value != "" ? props.value : undefined
+    id: props.value != null ? props.value : undefined
   });
 
   const [inputValue, setInputValue] = useState<string>("");
@@ -30,6 +30,13 @@ export const ForeignKeyWidget = (props: WidgetProps) => {
   });
 
   const options = listResult.data?.data || [];
+  if (! props.required) {
+    const empty_option: BaseRecord = {
+      id: null
+    }
+    empty_option[labelField] = "(None)"
+    options.unshift(empty_option);
+  }
   const isLoading = listResult.isLoading || valueResult.isLoading;
 
   if(! selectedValue && valueResult.data) {
@@ -40,9 +47,9 @@ export const ForeignKeyWidget = (props: WidgetProps) => {
     <Autocomplete
       value={selectedValue}
       onChange={(event, newValue) => {
-        setSelectedValue(newValue)
-        props.onChange(newValue ? newValue.id : "")
-        return true
+        setSelectedValue(newValue);
+        props.onChange(newValue ? newValue.id : null);
+        return true;
       }}
       //inputValue={inputValue}
       onInputChange={(event, newInputValue) => setInputValue(newInputValue)}

gui/app/src/providers/jsonschema-provider.tsx

@@ -33,11 +33,15 @@ function buildResource(rawSchemas: RJSFSchema, resourceName: string) {
     } else if (is_union(prop)) {
       const union = prop.hasOwnProperty("oneOf") ? prop.oneOf : prop.anyOf;
       for (let i in union) {
-        resolveReference(rawSchemas, resource, union[i]);
+        if (is_reference(union[i])) {
+          resolveReference(rawSchemas, resource, union[i]);
+        }
       }
     } else if (is_enum(prop)) {
       for (let i in prop.allOf) {
-        resolveReference(rawSchemas, resource, prop.allOf[i]);
+        if (is_reference(prop.allOf[i])) {
+          resolveReference(rawSchemas, resource, prop.allOf[i]);
+        }
       }
     } else if (is_array(prop) && is_reference(prop.items)) {
       resolveReference(rawSchemas, resource, prop.items);