Question
What things we can define in the model?
Answers
There are lot of things you can define in models few are:

Validations (like validates_presence_of, numeracility_of, format_of etc.)
Relationships (like has_one, has_many, HABTM etc.)
Callbacks (like before_save, after_save, before_create etc.)
Suppose you installed a plugin say validation_group, So you can also define validation_group settings in your model
ROR Queries in Sql
Active record Associations Relationship   Your Comment




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