How to add relate option on a model

Hello I am trying to make a shortcut from a module to another and I can’t find information, I want to add a module on the list that is displayed on the Related entries
Screenshot from 2020-03-20 22-46-35
Is there any tutorial to do that?

Thnaks in advance

This action is a related button which is used to show records related to the current one. For example, the invoices related to a party.

In order to create a new relate option you should define a new action which has a domain that evaluates active_ids. This will be replaced by the clients with the ids of the selected records. Then you should define a form_relate keyword on the action with the model where you want to add this relate option.

For example, Here is the xml definition of the Party invoices relate.

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Im following the manual and adding a module to tryton and there’s a problem to try to open it, give me this error:

ERROR trytond.protocols.dispatcher <class 'trytond.modules.waiterman.tablepos.Area'>.fields_view_get(*(798, 'tree', {'client': '06ac72cc-23aa-4b74-9d47-392ca70c2ab6', 'warehouse': None, 'employee': None, 'company': None, 'language': 'es', 'language_direction': 'ltr', 'groups': [1, 11, 9, 4, 26, 22, 6, 12, 2, 15, 16, 7, 18, 3, 10, 25, 21, 27, 23, 5, 31, 30, 14, 29, 13, 20, 19, 17, 8, 28, 24]}), **{}) from admin@127.0.0.1//sugelico/
Traceback (most recent call last):
  File "/home/hidura/Documents/RESTPOS/server/TrytonREST/env/lib/python3.7/site-packages/trytond/protocols/dispatcher.py", line 186, in _dispatch
    result = rpc.result(meth(*c_args, **c_kwargs))
  File "/home/hidura/Documents/RESTPOS/server/TrytonREST/env/lib/python3.7/site-packages/trytond/model/modelview.py", line 303, in fields_view_get
    tree = etree.fromstring(result['arch'], parser=parser)
  File "src/lxml/etree.pyx", line 3235, in lxml.etree.fromstring
  File "src/lxml/parser.pxi", line 1875, in lxml.etree._parseMemoryDocument
ValueError: can only parse strings

This is my xml where I declared the menu options.

<?xml version=“1.0”?>
<tryton>
  <data>
    <menuitem name=“Restaurant Management” id=“menu_restman” sequence=“1”/>
    <record model=“ir.ui.view” id=“area_view_form”>
      <field name=“model”>area.rest</field>
      <field name=“type”>form</field>
      <field name=“name”>arearest_form</field>
    </record>
    <record model=“ir.ui.view” id=“area_view_list”>
      <field name=“model”>area.rest</field>
      <field name=“type”>tree</field>
      <field name=“name”>arearest_list</field>
    </record>
    <record model=“ir.action.act_window” id=“act_area”>
      <field name=“name”>Areas</field>
      <field name=“res_model”>area.rest</field>
    </record>
    <record model=“ir.action.act_window.view” id=“act_area_view_list”>
      <field name=“sequence” eval=“10”/>
      <field name=“view” ref=“area_view_list”/>
      <field name=“act_window” ref=“act_area”/>
    </record>
    <record model=“ir.action.act_window.view” id=“act_area_view_form”>
      <field name=“sequence” eval=“20”/>
      <field name=“view” ref=“area_view_form”/>
      <field name=“act_window” ref=“act_area”/>
    </record>
    <menuitem parent=“menu_restman” sequence=“1” action=“act_area” id=“menu_area”/>
  </data>
</tryton>

You are missing the view architechture for the following records:

You shouuld define them a file name arearest_form.xml and arearest_list.xml inside the view folder of your module

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And how I can add a action to be executed? Like the one displays on this button -> Screenshot from 2020-03-21 22-10-32

Never mind, I found it! Is creating a wizard and adding it to a group and connecting it to the class like this:

    <record model=“ir.action.wizard” id=“wizard_erase”>
        <field name=“name”>Erase</field>
        <field name=“wiz_name”>party.erase</field>
        <field name=“model”>area.rest</field> --> Model
    </record>
    <record model=“ir.action-res.group” id=“wizard_erase-group_party_admin”>
        <field name=“action” ref=“wizard_erase”/>
        <field name=“group” ref=“group_rest_admin”/>
    </record>
    <record model=“ir.action.keyword” id=“wizard_erase_keyword1”>
        <field name=“keyword”>form_action</field>
       <field name=“model”>area.rest,-1</field>
       <field name=“action” ref=“wizard_erase”/>
    </record>

    <record model=“ir.ui.view” id=“erase_ask_view_form”>
        <field name=“model”>party.erase.ask</field>
        <field name=“type”>form</field>
       <field name=“name”>erase_ask_form</field>
    </record>

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