ruby on rails - Recursively including all model subdirectories - Stack Overflow
Safely migrating has_and_belongs_to_many associations to Rails 4. by Robert That one time I used recursion to solve a problem. by Robert . Don't forget about eager_load when extending autoload paths. by Robert. HTML · CSS · JS · PHP · Ruby · Mobile · UX · Design But if I want to define a relation in class 'Comment' back to its user ('user' A way for a child entity to find the path all the way to the root entity, to find if one of the Rather than automatically load a dependency regardless of whether the object is a. The PEAR naming conventions dictate a relation between the filesystem and the class. Zend Framework's autoloader has been PSR-0 compliant since 0 Recursively scan a filesystem tree; For each PHP file found, scan for For each match, store the fully qualified class name and the file path.
For objects of class Object, eql? Subclasses normally continue this tradition by aliasing eql?
Module: Scrivito — Documentation for scrivito_sdk ()
Of limited use for modules, but can be used in case statements to classify objects by class. This can be used to add methods to a class. The optional filename and lineno parameters set the text for error messages. The method defined in the block will belong to the receiver. Any arguments passed to the method will be passed to the block.
Ruby Dir.glob ** pattern
This can be used if the block needs to access instance variables. String arguments are converted to symbols. The part of the variable name should be included for regular class variables String arguments are converted to symbols.
If the class variable name is passed as a string, that string is converted to a symbol. This includes the names of class variables in any included modules, unless the inherit parameter is set to false.Bundle install
Returns whether or not a definition is found: The value of the constant is returned if a definition is found, otherwise a NameError is raised. Bar' The inherit flag is respected on each lookup. It is passed a symbol for the undefined constant, and returns a value to be used for that constant.
The following code is an example of the same: If found, it returns the loaded class.
If by chance the top-level User was not yet loaded, then Rails assumes a relative reference by contract. If the Admin module is not yet loaded when Admin:: UsersController is hit, Rails needs first to autoload the constant Admin.
Ruby az-links.info ** pattern | RailsWays
The procedure to autoload constant C in an arbitrary situation is as follows: That depends on the execution path and it may vary between runs. There are times, however, in which you want to make sure a certain constant is known when the execution reaches some code. Exploiting this behavior would be a bad practice though, file and constant paths should match. For example, if you're in a console session and edit some file behind the scenes, the code can be reloaded with the reload!
When the application runs, code is reloaded when something relevant to this logic changes. In order to do that, Rails monitors a number of things: If anything in there changes, there is a middleware that detects it and reloads the code.
Autoloading keeps track of autoloaded constants. That way, when the code goes on, those constants are going to be unknown again, and files reloaded on demand.
This is an all-or-nothing operation, Rails does not attempt to reload only what changed since dependencies between classes makes that really tricky. Instead, everything is wiped.
It is quite transparent. Rails internals make extensive use of it to defer as much work as possible from the boot process. But constant autoloading in Rails is not implemented with Module autoload.
One possible implementation based on Module autoload would be to walk the application tree and issue autoload calls that map existing file names to their conventional constant name. There are a number of reasons that prevent Rails from using that implementation.
For example, Module autoload is only capable of loading files using require, so reloading would not be possible. Not only that, it uses an internal require which is not Kernel require.