set_query for link field in page

Frappe Framework App Development
1

hello everyone,

I’m making a page that has 4 link fields but one need to filter it values using the value in the others.

Normally a use set_query function in a doctype and i was searching in ERPNext and found a parameter named filter.

How can i filter the values of link field 2 using the value in link field 1 in a page?

Example Code:

var classroom = frappe.ui.form.make_control({
		parent: wrapper.body.find(".classroom"),
		df: {
			fieldtype: "Link",
			options: "ClassRooms",
			fieldname: "classroom",
			placeholder: "Class Room"
		},
		only_input: true
	});

var teacher = frappe.ui.form.make_control({
		parent: wrapper.body.find(".teacher"),
		df: {
			fieldtype: "Link",
			options: "Teachers",
			fieldname: "teacher",
			placeholder: "Teacher"
		},
		only_input: true
	});

filter all the teacher that has a class in the classroom selected. For example

2

In this case you can’t use filter becuase its a static function, you can use get_query to return the filter options though.

3

Thanks for your answer. Now It’s working. +1

1 Like
4

Hi @narcisonunez please give us your solution? I need to use get_query for page, but I not sure where I will put it to.
Thanks .

5

@Khang_Le You can use something like below

frappe.pages["test-page"].on_page_load = function (wrapper) {
  frappe.ui.make_app_page({
    parent: wrapper,
    title: "Test",
    single_column: false,
  });
  frappe.test = new Test(wrapper);
};
class Test {
  constructor(wrapper) {
          this.data ={}
          this.init_fields();
      }
  init_fields(){
    this.project = frappe.ui.form.make_control({
    df: {
    label: __("Project"),
    fieldtype: "Link",
    fieldname: "project",
    options: "Project",
    reqd: 1,
    onchange: () => {
      this.data.project = this.project.get_value();
    },
  },
  render_input: true,
});
        this.task = frappe.ui.form.make_control({
      df: {
        label: __("Task"),
        fieldtype: "Link",
        fieldname: "task",
        options: "Task",
        reqd: 1,
        get_query: function () {
          const project = frappe.test.project.value;
          if (!project) {
            frappe.throw(__("Please select Project"));
          }
          return {
            filters: {
              project: project,
            },
          };
        },
        onchange: () => {
          this.data.task = this.task.get_value();
        },
      });
  }