Introduction

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Introduction

qb is a fluent query builder for CFML. It is heavily inspired by Eloquent from Laravel.

Using qb, you can:

  • Quickly scaffold simple queries

  • Make complex, out-of-order queries possible

  • Abstract away differences between database engines

Requirements

  • Adobe ColdFusion 2016+

  • Lucee 5+

qb supports four major database grammars:

  • MySQL (MySQLGrammar)

  • Oracle (OracleGrammar)

  • Postgres (PostgresGrammar)

  • Microsoft SQL Server (SqlServerGrammar)

Installation

Installation is easy through CommandBox and ForgeBox. Simply type box install qb to get started.

Code Samples

Compare these two examples:

// Plain old CFML
q = queryExecute("SELECT * FROM users");
// qb
query = wirebox.getInstance('QueryBuilder@qb');
q = query.from('users').get();

The differences become even more stark when we introduce more complexity:

// Plain old CFML
q = queryExecute(
"SELECT * FROM posts WHERE published_at IS NOT NULL AND author_id IN ?",
[ { value = '5,10,27', cfsqltype = 'CF_SQL_NUMERIC', list = true } ]
);
// qb
query = wirebox.getInstance('QueryBuilder@qb');
q = query.from('posts')
.whereNotNull('published_at')
.whereIn('author_id', [5, 10, 27])
.get();

With qb you can easily handle setting order by statements before the columns you want or join statements after a where clause:

query = wirebox.getInstance('QueryBuilder@qb');
q = query.from('posts')
.orderBy('published_at')
.select('post_id', 'author_id', 'title', 'body')
.whereLike('author', 'Ja%')
.join('authors', 'authors.id', '=', 'posts.author_id')
.get();
// Becomes
q = queryExecute(
"SELECT post_id, author_id, title, body FROM posts INNER JOIN authors ON authors.id = posts.author_id WHERE author LIKE ? ORDER BY published_at",
[ { value = 'Ja%', cfsqltype = 'CF_SQL_VARCHAR', list = false, null = false } ]
);

qb enables you to explore new ways of organizing your code by letting you pass around a query builder object that will compile down to the right SQL without you having to keep track of the order, whitespace, or other SQL gotchas!

Here's a gist with an example of the powerful models you can create with this! https://gist.github.com/elpete/80d641b98025f16059f6476561d88202

Usage

To start a new query, instantiate a new Builder: wirebox.getInstance('QueryBuilder@qb').

By default, qb uses a generic Grammar. You can specify your specific grammar in ColdBox by setting the defaultGrammar in your moduleSettings.

moduleSettings = {
qb = {
defaultGrammar = "MySQLGrammar@qb"
}
};

If you are not using WireBox, just make sure to wire up the Builder object with the correct grammar:

var grammar = new qb.models.Query.Grammars.MySQLGrammar();
var builder = new qb.models.Query.Builder( grammar );