Reloading the application

Introduction

By default, Preside is run in production mode. This means that large parts of the codebase, configuration and even data queries are cached once for the life of the application. This is great for live performance but there are times when you want to either:

• Reload the entire application - perhaps you've just deployed to live
• Reload individual parts of the application - you've deployed a small change to live and can get by just reloading a bit of it
• Configure the site to reload everything on every request - you have a really fast laptop and you are developing on your local machine so want to see your code changes take effect every request
• Configure the site to reload parts of the application on every request - same as above but that reloading everything is too slow and you only need to reload parts of the application

Reloading all or part of the application

You can reload all or part of the application by supplying a reload token in the URL along with the reload password set in your application's config. The following table details the options you have:

• fwReinitCaches Clears out all the caches - this includes cached handlers, query caches and any other cache box caches configured in your site
• fwReinitStatic Rechecks and compiles the site's static assets (CSS, JS and static images)
• fwReinitTemplates Reloads / rediscovers the list of registered page templates
• fwReinitWidgets Reloads / rediscovers the list of registered widgets
• fwReinitObjects Reloads preside object definitions (but does not sync with the database)
• fwreinit Reloads the entire application
• fwReinitI18n Reloads the resource bundle definitions
• fwReinitForms Reloads your application's form definitions
• fwReinitDbSync Syncs preside object definitions with the database and reloads the object definitions in the process

e.g. http://www.mysite.com/?fwreinitForms=true

Configuring the reload password

By default, the reload password is set to "true" (hence the examples above). This can be made slightly more secure by setting it in your site's Config.cfc. e.g.

component extends="preside.system.config.Config" {
    public void function configure() {
        super.configure();
         
        coldbox.reinitPassword = "myS3cureP455w0rd15L33t";
  
        // etc. (more config settings here...)
         
    }
}

Configuring reloads on every request

In your local development environment, you may wish to configure parts or all of the application to reload on every request. The developerMode setting can be used in your Config.cfc or LocalConfig.cfc file to control this behaviouir. The setting can be set to true to turn on a total reload on every request, false to turn off all per-request reloading (default) or set to a structure with individual options for the different areas of the application that can be reloaded. The individual options are:

• dbSync Syncs preside object definitions with the database and reloads the object definitions in the process
• flushCaches Clears out all the caches - this includes cached handlers, query caches and any other cache box caches configured in your site
• reloadStatic Rechecks and compiles the site's static assets (CSS, JS and static images)
• reloadI18n Reloads the resource bundle definitions
• reloadPresideObjects Reloads preside object definitions (but does not sync with the database)
• reloadWidgets Reloads / rediscovers the list of registered widgets
• reloadForms Reloads your application's form layout definitions
• reloadPageTemplates Reloads / rediscovers the list of registered page templates

The following code gives examples of how you can configure these options:

component extends="preside.system.config.Config" {
    public void function configure() {
        super.configure();
        // ...
    }
       
    public void function local() {  
        // reload the entire application on every request
        settings.developerMode = true;
  
        // turns off all per-request reloading (default)
        settings.developerMode = false;
  
        // turn on / off individual per request reload options
        settings.developerMode = {
              dbSync               = true // or false,    
            , flushCaches          = true // or false,         
            , reloadForms          = true // or false,            
            , reloadStatic         = true // or false,          
            , reloadI18n           = true // or false,        
            , reloadPresideObjects = true // or false,                   
            , reloadWidgets        = true // or false,
            , reloadPageTemplates  = true // or false,
        };
    }
}