What is a rake task?
What is a rake task?
Rake is a software task management and build automation tool created by Jim Weirich. It allows the user to specify tasks and describe dependencies as well as to group tasks in a namespace. It is similar in to SCons and Make.
How do rake tasks work?
Rake enables you to define a set of tasks and the dependencies between them in a file, and then have the right thing happen when you run any given task. The combination of convenience and flexibility that Rake provides has made it the standard method of job automation for Ruby projects.
How do you pass arguments to a rake task?
To pass arguments, do three things:
- Add the argument names after the task name, separated by commas.
- Put the dependencies at the end using :needs => […]
- Place |t, args| after the do. (t is the object for this task)
How do I run a rake job?
Run Rake tasks
- To run a default task, run the rake utility without any parameters: rake .
- To run a task with environment variables, specify the values of the variables in the form [variable=value] before the task name: rake RAILS_ENV=production SECRET_KEY_BASE=my-secret-key about .
How do I see all rake tasks?
You can get a list of Rake tasks available to you, which will often depend on your current directory, by typing rake –tasks . Each task has a description, and should help you find the thing you need.
How do I debug a rake task?
Run a task from the editor
- In the *. rake file, do one of the following: Click the Run Rake Task button on the gutter next to the required task.
- Depending on whether you want to run or debug a task, select Run ” or Debug ”. Press Enter .
Where do I put Rake tasks?
rake extension and are placed in Rails. root/lib/tasks . You can create these custom rake tasks with the bin/rails generate task command. If your need to interact with your application models, perform database queries and so on, your task should depend on the environment task, which will load your application code.
What is environment Rake task?
Including => :environment will tell Rake to load full the application environment, giving the relevant task access to things like classes, helpers, etc. Without the :environment , you won’t have access to any of those extras.
How do I list a Rake task?
Where do I put rake tasks?
What is environment rake task?
What is the name of the task in Rake?
In addition, you can specify input parameters for your tasks, and other tasks that are prerequisites. For standard tasks, the name of the task is a Ruby symbol, which means that it must be prefixed by a colon, and also must use only lowercase alphanumeric characters, with underscores instead of spaces.
Do you need a rake file to write a task?
Writing Rake Files. A Rake file does not need to have anything in it, other than task definitions. In addition to the tasks, you may freely use standard Ruby elements, including constants and methods. Remember to set a default task: It’s a good habit to specify a default task in each Rake file (as explained below).
What do you need to know about rake in Ruby?
Rake is a popular task runner in Ruby. What is a task? These are small tasks that without Rake would be scattered all over your project on different files. Rake centralizes access to your tasks. Rake also makes a few things easier, like finding files that match a certain pattern & that have been modified recently.
Which is the best way to use rake?
Rake Options & Commands. Here’s a list of useful Rake options: rake -T (list available tasks) rake -P (list tasks & their dependencies) rake -W (list tasks & where they are defined) rake -V (verbose mode, echo system commands) rake -t (debugging mode) rake -f (use a specific Rakefile) For example, in a Rails app: