fix(inventory): allow floating-point values for inventory item measurements

Change weight, length, height, width from integer to float on the inventory item model, matching the product module (fixed in #14762). Includes a database migration (int -> real), schema validation update (optionalInt -> optionalFloat), and adds step='any' to all measurement input fields in both create and edit forms so the browser allows decimal input (matching #13863).

Closes #16784

Author: coderlucifer

.changeset/fix-inventory-item-float-measurements.md

@@ -0,0 +1,16 @@
+---
+"@medusajs/inventory": patch
+"@medusajs/dashboard": patch
+---
+
+fix(inventory): allow floating-point values for inventory item measurements
+
+Changed the inventory item model's weight, length, height, and width
+properties from `model.number()` (integer) to `model.float()`, aligning
+them with the product and product-variant models that already use float.
+
+Includes a database migration to alter the columns from `int` to `real`,
+updates the admin dashboard's create-inventory-item form schema from
+`optionalInt` to `optionalFloat`, and adds `step="any"` to all
+measurement input fields in both the create and edit forms so the browser
+allows decimal input.

packages/admin/dashboard/src/routes/inventory/inventory-create/components/inventory-create-form/inventory-create-form.tsx

@@ -336,6 +336,7 @@ export function InventoryCreateForm({ locations }: InventoryCreateFormProps) {
                               <Input
                                 {...field}
                                 type="number"
+                                step="any"
                                 min={0}
                                 placeholder="100"
                               />
@@ -358,6 +359,7 @@ export function InventoryCreateForm({ locations }: InventoryCreateFormProps) {
                               <Input
                                 {...field}
                                 type="number"
+                                step="any"
                                 min={0}
                                 placeholder="100"
                               />
@@ -380,6 +382,7 @@ export function InventoryCreateForm({ locations }: InventoryCreateFormProps) {
                               <Input
                                 {...field}
                                 type="number"
+                                step="any"
                                 min={0}
                                 placeholder="100"
                               />
@@ -402,6 +405,7 @@ export function InventoryCreateForm({ locations }: InventoryCreateFormProps) {
                               <Input
                                 {...field}
                                 type="number"
+                                step="any"
                                 min={0}
                                 placeholder="100"
                               />

packages/admin/dashboard/src/routes/inventory/inventory-create/components/inventory-create-form/schema.ts

@@ -1,15 +1,15 @@
 import { z } from "zod"
-import { optionalFloat, optionalInt } from "../../../../../lib/validation"
+import { optionalFloat } from "../../../../../lib/validation"
 
 export const CreateInventoryItemSchema = z.object({
   title: z.string().min(1),
   description: z.string().optional(),
   sku: z.string().optional(),
   hs_code: z.string().optional(),
-  weight: optionalInt,
-  length: optionalInt,
-  height: optionalInt,
-  width: optionalInt,
+  weight: optionalFloat,
+  length: optionalFloat,
+  height: optionalFloat,
+  width: optionalFloat,
   origin_country: z.string().optional(),
   mid_code: z.string().optional(),
   material: z.string().optional(),

packages/admin/dashboard/src/routes/inventory/inventory-detail/components/edit-inventory-item-attributes/components/edit-item-attributes-form.tsx

@@ -91,6 +91,7 @@ export const EditInventoryItemAttributesForm = ({
                   <Form.Control>
                     <Input
                       type="number"
+                      step="any"
                       min={0}
                       value={value || ""}
                       onChange={(e) => {
@@ -120,6 +121,7 @@ export const EditInventoryItemAttributesForm = ({
                   <Form.Control>
                     <Input
                       type="number"
+                      step="any"
                       min={0}
                       value={value || ""}
                       onChange={(e) => {
@@ -149,6 +151,7 @@ export const EditInventoryItemAttributesForm = ({
                   <Form.Control>
                     <Input
                       type="number"
+                      step="any"
                       min={0}
                       value={value || ""}
                       onChange={(e) => {
@@ -178,6 +181,7 @@ export const EditInventoryItemAttributesForm = ({
                   <Form.Control>
                     <Input
                       type="number"
+                      step="any"
                       min={0}
                       value={value || ""}
                       onChange={(e) => {

packages/modules/inventory/src/migrations/.snapshot-medusa-inventory.json

@@ -120,7 +120,7 @@
         },
         "weight": {
           "name": "weight",
-          "type": "integer",
+          "type": "real",
           "unsigned": false,
           "autoincrement": false,
           "primary": false,
@@ -132,11 +132,11 @@
           "default": null,
           "comment": null,
           "enumItems": [],
-          "mappedType": "integer"
+          "mappedType": "float"
         },
         "length": {
           "name": "length",
-          "type": "integer",
+          "type": "real",
           "unsigned": false,
           "autoincrement": false,
           "primary": false,
@@ -148,11 +148,11 @@
           "default": null,
           "comment": null,
           "enumItems": [],
-          "mappedType": "integer"
+          "mappedType": "float"
         },
         "height": {
           "name": "height",
-          "type": "integer",
+          "type": "real",
           "unsigned": false,
           "autoincrement": false,
           "primary": false,
@@ -164,11 +164,11 @@
           "default": null,
           "comment": null,
           "enumItems": [],
-          "mappedType": "integer"
+          "mappedType": "float"
         },
         "width": {
           "name": "width",
-          "type": "integer",
+          "type": "real",
           "unsigned": false,
           "autoincrement": false,
           "primary": false,
@@ -180,7 +180,7 @@
           "default": null,
           "comment": null,
           "enumItems": [],
-          "mappedType": "integer"
+          "mappedType": "float"
         },
         "requires_shipping": {
           "name": "requires_shipping",

packages/modules/inventory/src/migrations/Migration20260911000000.ts

@@ -0,0 +1,34 @@
+import { Migration } from "@medusajs/framework/mikro-orm/migrations"
+
+export class Migration20260911000000 extends Migration {
+  override async up(): Promise<void> {
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "weight" type real using ("weight"::real);`
+    )
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "length" type real using ("length"::real);`
+    )
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "height" type real using ("height"::real);`
+    )
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "width" type real using ("width"::real);`
+    )
+  }
+
+  override async down(): Promise<void> {
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "weight" type int using ("weight"::int);`
+    )
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "length" type int using ("length"::int);`
+    )
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "height" type int using ("height"::int);`
+    )
+    this.addSql(
+      `alter table if exists "inventory_item" alter column "width" type int using ("width"::int);`
+    )
+  }
+}
+

packages/modules/inventory/src/models/inventory-item.ts

@@ -11,10 +11,10 @@ const InventoryItem = model
     mid_code: model.text().searchable().nullable(),
     material: model.text().nullable(),
     unit_of_measure: model.text().nullable(),
-    weight: model.number().nullable(),
-    length: model.number().nullable(),
-    height: model.number().nullable(),
-    width: model.number().nullable(),
+    weight: model.float().nullable(),
+    length: model.float().nullable(),
+    height: model.float().nullable(),
+    width: model.float().nullable(),
     requires_shipping: model.boolean().default(true),
     description: model.text().searchable().nullable(),
     title: model.text().searchable().nullable(),