Nsryjdtyk

I have 3 models:

1. Workspace (has many projects)


2. Project (belongs to workspace and has many tasks)


3. Task (belongs to project)

In the Rails console, I can do;

w = Workspace.find(1)

w.projects.all

This returns all of the projects that belong to workspace with Id = 1. How do o find all of the tasks that belong to workspace with Id = 1?

I have tried:

w.projects.tasks.all 

but this doesn't work

In your workspace model use the below association:

has_many :tasks, through: :projects

Also, I recommend you to check the Rails guides

As per the description mentioned in the post you need to find the task belongs to a particular project that in turn belongs to a particular workspace.

 w.projects.tasks.all

The above line won't be working as w.projects would returning collection of ActiveRecord and for association to work you need an object.

Assuming you have written necessary association as mentioned by @Abhilash, below mentioned query would achieve would you need.

#1st solution

project_tasks = w.includes(:projects => [:tasks]) #eager-loading both project and tasks

#2nd solution

project_tasks = w.projects.map {|project| project.tasks } # will return all tasks

Hope it clears your query!!