Visualforce Lifecycle
In Salesforce Visualforce, the sequence of phases a page goes through during each server request: view state restoration, expression evaluation, controller method execution, and view state saving for the response.
Definition
In Salesforce Visualforce, the sequence of phases a page goes through during each server request: view state restoration, expression evaluation, controller method execution, and view state saving for the response.
In plain English
“The Visualforce Lifecycle is the sequence of phases a Visualforce page goes through during each server request: view state restoration, expression evaluation, controller method execution, and response rendering. Understanding it helps you write effective Visualforce code.”
Worked example
A developer at Steelhead Brewing is debugging a Visualforce page where users complain that clicking the Save button blanks out three fields they had filled in. Walking through the Visualforce Lifecycle, the developer traces the request: view-state restoration loads the previous postback's values, expression evaluation re-renders bindings, then the controller's constructor re-runs and overwrites the bound properties - that's the bug. He moves the property initialization out of the constructor into a one-time getter check, redeploys, and the entered values now survive postback because the lifecycle no longer reinitializes them. Knowing each phase of the Visualforce Lifecycle is what lets him diagnose timing bugs that look magical from outside.
Why Visualforce Lifecycle matters
In Salesforce Visualforce, the Lifecycle is the sequence of phases a page goes through during each server request: view state restoration, expression evaluation, controller method execution, and response rendering. Each phase has specific behaviors that affect how the page processes data.
Understanding the lifecycle is important for debugging Visualforce issues because the order of operations matters. Variable values change at different phases, and methods execute at specific points. Mature Visualforce developers understand the lifecycle for effective debugging and code design.
How organizations use Visualforce Lifecycle
Teaches the Visualforce lifecycle as essential for debugging page issues.
References lifecycle phases when troubleshooting complex Visualforce behavior.
Designs controller logic with lifecycle awareness for correct behavior.
Trust & references
Straight from the source - Salesforce's reference material on Visualforce Lifecycle.
- Order of Execution in a Visualforce PageSalesforce Developers
Test your knowledge
Q1. What is the Visualforce Lifecycle?
Q2. What are the phases?
Q3. Why understand it?
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