Don't know how to build task 'erd' about rails-erd

[kaleemullah]

same issue

[dwwoelfel]

I solved this by adding the following line to my Rakefile:

require '/usr/lib/ruby/gems/1.8/gems/rails-erd-0.4.5/lib/rails_erd/tasks.rake'

I'm sure there's a better way, but this works.

[nicolasgarnil]

I'm having the same problem.

[rolftimmermans]

The rake task is automatically registered in Rails projects. If you don't use Rails directly, you can use Rails ERD by calling the API. Here's an example:

require "rails_erd/diagram/graphviz"
# Load your models here.
RailsERD::Diagram::Graphviz.create

A future version may supply an executable file so you no longer need Rake and/or Rails.

[Adithya-copart]

For others who encounter the NoMethodError: undefined method `application' for Rails:Module,
I was able to monkey-patch the name method in domain class to return nil and got around this.

Used outside Rails with ActiveRecord 5.1.1

 RailsERD::Diagram::Graphviz.create
NoMethodError: undefined method `application' for Rails:Module
	from /Users/adpentela/.rvm/gems/ruby-2.4.0/gems/rails-erd-1.5.2/lib/rails_erd/domain.rb:52:in `name'
	from /Users/adpentela/.rvm/gems/ruby-2.4.0/gems/rails-erd-1.5.2/lib/rails_erd/diagram/graphviz.rb:179:in `block in <class:Graphviz>'
	from /Users/adpentela/.rvm/gems/ruby-2.4.0/gems/rails-erd-1.5.2/lib/rails_erd/diagram.rb:126:in `instance_eval'
	from /Users/adpentela/.rvm/gems/ruby-2.4.0/gems/rails-erd-1.5.2/lib/rails_erd/diagram.rb:126:in `generate'
	from /Users/adpentela/.rvm/gems/ruby-2.4.0/gems/rails-erd-1.5.2/lib/rails_erd/diagram.rb:119:in `create'
	from /Users/adpentela/.rvm/gems/ruby-2.4.0/gems/rails-erd-1.5.2/lib/rails_erd/diagram.rb:74:in `create'
	from (irb):11
	from /Users/adpentela/.rvm/rubies/ruby-2.4.0/bin/irb:11:in `<main>'

[ADTC]

Try bundle exec erd as this will directly execute it instead of running it as a Rails Task.