initialized postgres support

app/src/data/fields/BooleanField.ts

@@ -32,9 +32,11 @@ export class BooleanField<Required extends true | false = false> extends Field<
       }
    }
 
-   schema() {
-      // @todo: potentially use "integer" instead
-      return this.useSchemaHelper("boolean");
+   override schema() {
+      return Object.freeze({
+         ...super.schema()!,
+         type: "boolean",
+      });
    }
 
    override getHtmlConfig() {

app/src/data/fields/DateField.ts

@@ -32,8 +32,10 @@ export class DateField<Required extends true | false = false> extends Field<
    }
 
    override schema() {
-      const type = this.config.type === "datetime" ? "datetime" : "date";
-      return this.useSchemaHelper(type);
+      return Object.freeze({
+         ...super.schema()!,
+         type: this.config.type === "datetime" ? "datetime" : "date",
+      });
    }
 
    override getHtmlConfig() {

app/src/data/fields/EnumField.ts

@@ -66,10 +66,6 @@ export class EnumField<Required extends true | false = false, TypeOverride = str
       return enumFieldConfigSchema;
    }
 
-   override schema() {
-      return this.useSchemaHelper("text");
-   }
-
    getOptions(): { label: string; value: string }[] {
       const options = this.config?.options ?? { type: "strings", values: [] };
 

app/src/data/fields/Field.ts

@@ -1,16 +1,16 @@
 import {
+   parse,
+   snakeToPascalWithSpaces,
    type Static,
    StringEnum,
    type TSchema,
    Type,
    TypeInvalidError,
-   parse,
-   snakeToPascalWithSpaces,
 } from "core/utils";
-import type { ColumnBuilderCallback, ColumnDataType, ColumnDefinitionBuilder } from "kysely";
 import type { HTMLInputTypeAttribute, InputHTMLAttributes } from "react";
 import type { EntityManager } from "../entities";
 import { InvalidFieldConfigException, TransformPersistFailedException } from "../errors";
+import type { FieldSpec } from "data/connection/Connection";
 
 // @todo: contexts need to be reworked
 // e.g. "table" is irrelevant, because if read is not given, it fails
@@ -67,8 +67,6 @@ export const baseFieldConfigSchema = Type.Object(
 );
 export type BaseFieldConfig = Static<typeof baseFieldConfigSchema>;
 
-export type SchemaResponse = [string, ColumnDataType, ColumnBuilderCallback] | undefined;
-
 export abstract class Field<
    Config extends BaseFieldConfig = BaseFieldConfig,
    Type = any,
@@ -106,25 +104,18 @@ export abstract class Field<
 
    protected abstract getSchema(): TSchema;
 
-   protected useSchemaHelper(
-      type: ColumnDataType,
-      builder?: (col: ColumnDefinitionBuilder) => ColumnDefinitionBuilder,
-   ): SchemaResponse {
-      return [
-         this.name,
-         type,
-         (col: ColumnDefinitionBuilder) => {
-            if (builder) return builder(col);
-            return col;
-         },
-      ];
-   }
-
    /**
     * Used in SchemaManager.ts
     * @param em
     */
-   abstract schema(em: EntityManager<any>): SchemaResponse;
+   schema(): FieldSpec | undefined {
+      return Object.freeze({
+         name: this.name,
+         type: "text",
+         nullable: true,
+         dflt: this.getDefault(),
+      });
+   }
 
    hasDefault() {
       return this.config.default_value !== undefined;

app/src/data/fields/JsonField.ts

@@ -18,10 +18,6 @@ export class JsonField<Required extends true | false = false, TypeOverride = obj
       return jsonFieldConfigSchema;
    }
 
-   override schema() {
-      return this.useSchemaHelper("text");
-   }
-
    /**
     * Transform value after retrieving from database
     * @param value

app/src/data/fields/JsonSchemaField.ts

@@ -36,10 +36,6 @@ export class JsonSchemaField<
       return jsonSchemaFieldConfigSchema;
    }
 
-   override schema() {
-      return this.useSchemaHelper("text");
-   }
-
    getJsonSchema(): JsonSchema {
       return this.config?.schema as JsonSchema;
    }

app/src/data/fields/NumberField.ts

@@ -44,8 +44,11 @@ export class NumberField<Required extends true | false = false> extends Field<
       };
    }
 
-   schema() {
-      return this.useSchemaHelper("integer");
+   override schema() {
+      return Object.freeze({
+         ...super.schema()!,
+         type: "integer",
+      });
    }
 
    override getValue(value: any, context?: TRenderContext): any {

app/src/data/fields/PrimaryField.ts

@@ -30,9 +30,12 @@ export class PrimaryField<Required extends true | false = false> extends Field<
       return baseFieldConfigSchema;
    }
 
-   schema() {
-      return this.useSchemaHelper("integer", (col) => {
-         return col.primaryKey().notNull().autoIncrement();
+   override schema() {
+      return Object.freeze({
+         type: "integer",
+         name: this.name,
+         primary: true,
+         nullable: false,
       });
    }
 

app/src/data/fields/TextField.ts

@@ -47,10 +47,6 @@ export class TextField<Required extends true | false = false> extends Field<
       return textFieldConfigSchema;
    }
 
-   override schema() {
-      return this.useSchemaHelper("text");
-   }
-
    override getHtmlConfig() {
       if (this.config.html_config) {
          return this.config.html_config as any;

app/src/data/fields/VirtualField.ts

@@ -17,7 +17,7 @@ export class VirtualField extends Field<VirtualFieldConfig> {
       return virtualFieldConfigSchema;
    }
 
-   schema() {
+   override schema() {
       return undefined;
    }