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How are dependent picklist values defined in apex?
Figure 2 shows a field dependency defined between a controlling checkbox field, CheckBox, and a dependent picklist field, DependOnCheckBox . In the case of a checkbox field, there are exactly two possible controlling values, “Unchecked” and “Checked”. These correspond to the Boolean values false and true in Apex.
What does dependent picklist mean in Salesforce help?
Salesforce supports the concept of a “dependent” picklist, that is, a picklist whose values vary based on the state of another field (the “controlling” field). According to Salesforce Help: A dependent picklist is a custom or multi-select picklist for which the valid values depend on the value of another field, called the controlling field.
Can a multi-select picklist be a controlling field?
Multi-select picklist fields can be dependent, but not controlling fields. You can set default values for controlling fields but not for dependent picklists. If your org uses record types, choose a record type to test how it affects your controlling and dependent picklist values.
What is the validfor member of picklistentry object?
When obtained from the API, the PicklistEntry object contains a member, called validFor, that encodes the information we seek. Some very clever people discovered long ago that the Apex Schema.PicklistEntry object also contains this member, even though there is no method to return its value.
Is it better to return NULL or empty object?
It returns null if the LINQ query returns an empty result set. Is this “correct”. Is it better to return an empty object? If so then how can I do that?
How is the schema.picklistentry deserialized in apex?
The Schema.PicklistEntry is serialized and deserialized using the Apex JSON class. By using JSON.deserializeUntyped, we avoid the need to declare a class to use when deserializing, and the code will continue to work even if Salesforce changes the internals of the Schema.PicklistEntry class — as long as it continues to have a validFor field.
What to do when picklist value is inactive?
If the controlling picklist value is inactive or if the decoded bit is a zero, the code skips this column. The decoding is done using the indexOf method, which converts the Base64 character into the value (0-63) that it represents.
What happens to controlvalue when picklist is inactive?
If the controlling field is a picklist, then controlValue will be assigned the label of the active picklist value, or null, if the picklist value is inactive. If the controlling field is a checkbox, then controlValue will be assigned false (when index is 0) or true (when index is 1).