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'''Designer > Data & Presentation > Objects > {object} > Fields > [New] / [Edit] > Display Type > Multi Object Lookup'''
'''[[File:GearIcon.png]] > Customization > Objects > {object} > Fields > [New] / [Edit] > Display Type > Multi Object Lookup'''


A Multi Object Lookup lets you reference records in multiple objects. Instead of having a fixed target object, as for a normal [[Lookup]], the target object can be specified before a target record is selected.
A Multi Object Lookup lets you reference records in multiple objects. Instead of having a fixed target object, as for a normal [[Lookup]], the target object can be specified before a target record is selected.
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==Considerations==
==Considerations==
:* Multi Object Lookup fields can be created only in {{type|}}s
:* Multi Object Lookup fields can be created only in {{type|}}s
:* A Multi Object Lookup field can reference other {{type|}}s, or one of these {{type}}s:
:::{| cellpadding="5" cellspacing="1" width="50%"
| valign="top"| Account<br> Contract<br>    Product<br>  User
|valign="top"| Case<br>    Opportunity<br>  Project<br>
|valign="top"| Contact<br>  Price Book<br>  Prospect<br>
|}
:* In the GUI, the value shown in the Lookup field is the [[Record Locator]] value for the selected record--the identifying information displayed for the record. But the value actually stored in the record consists of the object ID and the record ID.
:* In the GUI, the value shown in the Lookup field is the [[Record Locator]] value for the selected record--the identifying information displayed for the record. But the value actually stored in the record consists of the object ID and the record ID.
:* Therefore, to specify a value for a Multi Value Lookup field when doing a [[Search]], you do not specify the value displayed in the GUI. Rather specify the target record using this format:
:* Therefore, to specify a value for a Multi Object Lookup field when doing a [[Search]], you do not specify the value displayed in the GUI. Rather specify the target record using this format:
:::<tt>{object_id}:{record_id}</tt>
:::<tt>{object_id}:{record_id}</tt>
::where:
::where:
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:* That format generated by a [[Data Export]] is the same as that required for import:
:* That format generated by a [[Data Export]] is the same as that required for import:
:::<tt>{object_id}:{record_id}</tt>
:::<tt>{object_id}:{record_id}</tt>
:* In a [[Form Layout]], it is not possible to include a Multi Object Lookup field in the criteria for a [[Layout Rule]]. (Only the [[Record ID]] is stored in the current record, so there is no value for the Layout Rule to compare to.)
:* In a [[Form]], it is not possible to include a Multi Object Lookup field in the criteria for a [[Layout Rule]]. (Only the [[Record ID]] is stored in the current record, so there is no value for the Layout Rule to compare to.)
:* For the same reason, Multi Object Lookup fields cannot be used for:
:* For the same reason, Multi Object Lookup fields cannot be used for [[Template Variables]] in, for example, Document Templates and email templates
:::* [[Template Variables]] in, for example, print templates and email templates
:::* [[Object Data Model]]s
:* Like other [[Lookup]] fields, Multi Object Lookup fields are not available for use in
:* Like other [[Lookup]] fields, Multi Object Lookup fields are not available for use in
:::* [[Field Scripting|Field Scripts]] (<tt>onChange</tt> and <tt>onFocus</tt> scripts in forms)
:::* [[Field Scripting|Field Scripts]] (<tt>onChange</tt> and <tt>onFocus</tt> scripts in forms)
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:::* for sorting
:::* for sorting
:::* for color coding
:::* for color coding
:::* to make a thumbnail
:* When doing a [[Mass Update Data|Mass Update of Data]], it is not possible to specify a value for a Multi Object Lookup field.
:* When doing a [[Mass Update Data|Mass Update of Data]] from the GUI, or when [[Update|Updating]] a group of records in a list view, it is not possible to specify a value for a Multi Object Lookup field.
:* Multi Object Lookup field is not eligible for [[Indexes]].
<!--:* When creating a [[Snapshots|Snapshot]]:
 
:::* A Multi Object Lookup field can be mapped only to another Multi Object Lookup or to a String field.
==Field Properties==
:::* A Multi Object Lookup can only be targeted in a mapping by another Multi Object Lookup field.
This section describes the properties you can set when creating a {{PAGENAME}} field.
:::* The objects selected as possible targets in the destination field should in general match the possible targets in the source field, or be a superset. If the source field references an object that is not designated as a possible target in the destination field, the destination field will be empty for that record.
-->


==Creating a Multi Object Lookup Field==
This section describes the properties you can set for a Multi Object Lookup Field, when you are creating a field of that type in the GUI.
===Basic Information===
===Basic Information===
:* '''Label''' - The field label the user will see in the GUI.
:* '''Label''' - The field label the user will see in the GUI.
:* '''Display Type: Multi Object Lookup'''  
:* '''Display Type''' - ''Multi Object Lookup''  
:* '''Always Required''' - If checked, a value must be specified when adding or updating a record.
:* '''Always Required''' - If checked, a value must be specified when adding or updating a record.
:* '''Field name''' - The field name that will be used in the internal code.
:* '''Field name''' - The field name that will be used in the internal code.
:* '''Objects'''
:* '''Lookup Targets'''
:: Use the arrow buttons to move entries between the two lists:
::* '''All Objects -''' The Lookup field can target any object that is currently defined or added in the future
::* '''Available Objects''' - The objects defined in the platform.
::* '''Selected Objects -''' Use the arrow buttons to move entries between the two lists:
::* '''Selected Objects''' - The objects the user can choose.
:::* '''Available Objects -''' The objects defined in the platform.
:::* '''Selections -''' The objects that will be available for the user to choose.


===Display Attributes===
===Default Value===
:* '''Section''' - The section the field will appear in, in the default layout.
:* Enter text or a formula that returns a string, where the text string is of the form: <tt>{object_id}:{record_id}</tt><br>(An Object ID and a record ID, joined by a colon.)
:* '''Required''' - If checked, the field is required in that layout.
:;Considerations:
::*If the string does not match a valid record, the field remains empty.
::*Default values do not trigger [[Post Selection JavaScript]]
{{:Common:UseLOOKUPFunctionToGetRecordID}}


===Record Selection Information===
===Post Selection Javascript===
:* '''Standard Lookup''' - The choice is made directly from the target object.
{{:Using Post Selection JavaScript}}
:* '''Custom Page''' - The choice is made by way of custom JSP page.<br/>''Learn more: [[Using a Custom Page for a Lookup]]
 
==Creating Related Information Sections in Target Objects==
Unlike other Lookups, an object that is the target of a Multi Object Lookup does not have [[Related Information]] section generated automatically, for that relationshop. 
 
A [[Related Information]] section can be manually created, however.  
 
:''Learn more:'' [[Related_Information#Optional_Related_Information_Sections|Optional Related Information Sections]]


==REST APIs==
==REST APIs==
Multi Object Lookups can be manipulated using these REST APIs:
Multi Object Lookups can be manipulated using these REST APIs:
:* [[REST_API:field Resource#Payload Examples|field Resource]]
:* [[REST_API/Payload_Examples#Multi_Object_Lookup|field Resource]]
:* [[REST_API:form Resource#Payload Examples|form Resource]]
:* [[REST_API:record Resource|record Resource]]
:* [[REST_API:record Resource|record Resource]]
::*[[REST_API:record Resource#Add a Record| record Add]]
::*[[REST_API:record Resource#Add a Record| record Add]]
::*[[REST_API:record Resource#Update a Record| record Update]]
::*[[REST_API:record Resource#Update a Record| record Update]]
::*[[REST_API:record Resource#Retrieve a Record| record Fetch]]
::*[[REST_API:record Resource#Retrieve a Record| record Fetch]]
<noinclude>


 
[[Category:Field Display Types]]
[[Category:Fields]]
</noinclude>

Latest revision as of 06:35, 21 October 2016

GearIcon.png > Customization > Objects > {object} > Fields > [New] / [Edit] > Display Type > Multi Object Lookup

A Multi Object Lookup lets you reference records in multiple objects. Instead of having a fixed target object, as for a normal Lookup, the target object can be specified before a target record is selected.

In use, a Multi-Object Lookup is a two-stage lookup. First you select the object to use for the Lookup, and then you select a record from that object.

For example, a distributor might take orders for products that come from different catalogs, where each catalog is provided by a different supplier. The Multi-object Lookup field type makes it possible for the order taker to first choose the catalog the product is in, and then choose the product from that catalog.

Considerations

  • Multi Object Lookup fields can be created only in Custom Objects
  • In the GUI, the value shown in the Lookup field is the Record Locator value for the selected record--the identifying information displayed for the record. But the value actually stored in the record consists of the object ID and the record ID.
  • Therefore, to specify a value for a Multi Object Lookup field when doing a Search, you do not specify the value displayed in the GUI. Rather specify the target record using this format:
{object_id}:{record_id}
where:
  • The syntax requires an object ID, followed by a colon (:), and the record id.
  • The object's ID must be specified. An object name will not work.
  • The record's ID must be specified, not the record locator value displayed in the GUI.
Note: For the moment, it is not possible for most users to search on a mult-object lookup field, since only admins and programmers will have access to the information needed to formulate the query.
  • The value for a multi-object lookup field must similarly be specified as
{object_id}:{record_id}
  • The object designated in the imported record must match one of the objects designated as a possible target for the multi-object lookup. Otherwise, the field is left empty in the imported record.
  • That format generated by a Data Export is the same as that required for import:
{object_id}:{record_id}
  • In a Form, it is not possible to include a Multi Object Lookup field in the criteria for a Layout Rule. (Only the Record ID is stored in the current record, so there is no value for the Layout Rule to compare to.)
  • For the same reason, Multi Object Lookup fields cannot be used for Template Variables in, for example, Document Templates and email templates
  • Like other Lookup fields, Multi Object Lookup fields are not available for use in
  • in a computed field
  • for sorting
  • for color coding
  • When doing a Mass Update of Data, it is not possible to specify a value for a Multi Object Lookup field.
  • Multi Object Lookup field is not eligible for Indexes.

Field Properties

This section describes the properties you can set when creating a Multi Object Lookup field.

Basic Information

  • Label - The field label the user will see in the GUI.
  • Display Type - Multi Object Lookup
  • Always Required - If checked, a value must be specified when adding or updating a record.
  • Field name - The field name that will be used in the internal code.
  • Lookup Targets
  • All Objects - The Lookup field can target any object that is currently defined or added in the future
  • Selected Objects - Use the arrow buttons to move entries between the two lists:
  • Available Objects - The objects defined in the platform.
  • Selections - The objects that will be available for the user to choose.

Default Value

  • Enter text or a formula that returns a string, where the text string is of the form: {object_id}:{record_id}
    (An Object ID and a record ID, joined by a colon.)
Considerations
  • If the string does not match a valid record, the field remains empty.
  • Default values do not trigger Post Selection JavaScript

Notepad.png

Note:
You can use the LOOKUP function to return the record_id field for a record that matches specified criteria. (For the User object, the LOOKUP function returns a text string--which is what you need, in this context. For all other objects, it returns a number. To convert that numeric value to a string, wrap the LOOKUP function in a TEXT function: TEXT(LOOKUP(...)).)

Post Selection Javascript

Use JavaScript to perform additional operations after the user chooses a Lookup target record in an object Form.

Examples
  • Add a validation to confirm that the record targeted by the Lookup is consistent with data in the current record.
  • Copy data from the target record to the current record.
Learn more: Post Selection JavaScript

Creating Related Information Sections in Target Objects

Unlike other Lookups, an object that is the target of a Multi Object Lookup does not have Related Information section generated automatically, for that relationshop.

A Related Information section can be manually created, however.

Learn more: Optional Related Information Sections

REST APIs

Multi Object Lookups can be manipulated using these REST APIs: