From 1d763704244ec7e59faa86799e6ed8aa7d195681 Mon Sep 17 00:00:00 2001
From: Hardik Zinzuvadiya <25708027+Z4nzu@users.noreply.github.com>
Date: Fri, 21 Feb 2025 12:19:05 +0530
Subject: [PATCH] feat: Add Grid Page Length field for child tables in DocType

---
 frappe/core/doctype/doctype/doctype.json        | 11 ++++++++++-
 frappe/core/doctype/doctype/doctype.py          |  1 +
 frappe/public/js/frappe/form/grid_pagination.js |  2 +-
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/frappe/core/doctype/doctype/doctype.json b/frappe/core/doctype/doctype/doctype.json
index dbb210b646..6b9d744e80 100644
--- a/frappe/core/doctype/doctype/doctype.json
+++ b/frappe/core/doctype/doctype/doctype.json
@@ -31,6 +31,7 @@
   "is_calendar_and_gantt",
   "editable_grid",
   "quick_entry",
+  "grid_page_length",
   "cb01",
   "track_changes",
   "track_seen",
@@ -680,6 +681,14 @@
    "hidden": 1,
    "label": "Row Format",
    "options": "Dynamic\nCompressed"
+  },
+  {
+    "default": "50",
+    "depends_on": "istable",
+    "fieldname": "grid_page_length",
+    "fieldtype": "Int",
+    "label": "Grid Page Length",
+    "non_negative": 1
   }
  ],
  "icon": "fa fa-bolt",
@@ -799,4 +808,4 @@
  "states": [],
  "track_changes": 1,
  "translated_doctype": 1
-}
\ No newline at end of file
+}
diff --git a/frappe/core/doctype/doctype/doctype.py b/frappe/core/doctype/doctype/doctype.py
index d5913e47f5..338a8e99c2 100644
--- a/frappe/core/doctype/doctype/doctype.py
+++ b/frappe/core/doctype/doctype/doctype.py
@@ -121,6 +121,7 @@ class DocType(Document):
 		engine: DF.Literal["InnoDB", "MyISAM"]
 		fields: DF.Table[DocField]
 		force_re_route_to_default_view: DF.Check
+		grid_page_length: DF.Int
 		has_web_view: DF.Check
 		hide_toolbar: DF.Check
 		icon: DF.Data | None
diff --git a/frappe/public/js/frappe/form/grid_pagination.js b/frappe/public/js/frappe/form/grid_pagination.js
index 23233d820e..8bb8911ef3 100644
--- a/frappe/public/js/frappe/form/grid_pagination.js
+++ b/frappe/public/js/frappe/form/grid_pagination.js
@@ -5,7 +5,7 @@ export default class GridPagination {
 	}
 
 	setup_pagination() {
-		this.page_length = 50;
+		this.page_length = this.grid.meta?.grid_page_length || 50;
 		this.page_index = 1;
 		this.total_pages = Math.ceil(this.grid.data.length / this.page_length);