In this tutorial, we talk about how to use join for multiple tables in CakePHP when association between models are not necessarily hasOne or belongsTo.
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In CakPHP(we are referring to CakePHP 1.3 here) model, by default if the association between two models is
hasOne or belongsTo, when we use find statement, CakePHP will automatically use left join sql statement to perform the database calls.
However sometimes, we want to force CakePHP to perform join for models which are connected by hasMany, and we may sometimes want to join more than two tables together. Below is the solution.
When using find() method, you can pass in option using 'joins' key to force a join statement.
The find() method above will use join on five tables to get the result, that is much efficient database call, comparing to fetch results using multiple sql statements.
One important note to take here, if you are using Containable behavior on this model, you will have to set recursive=-1 before you call find() method
Hopefully this simple tip helped you with your development.
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You might also want to check out course Up and Running with CakePHP from lynda.com.