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exists()

Name Type Required Default Description
key any No Primary key value(s) of the record. Separate with comma if passing in multiple primary key values. Accepts a string, list, or a numeric value.
where string No Maps to the WHERE clause of the query (or HAVING when necessary). The following operators are supported: =, !=, <>, <, <=, >, >=, LIKE, NOT LIKE, IN, NOT IN, IS NULL, IS NOT NULL, AND, and OR (note that the key words need to be written in upper case). You can also use parentheses to group statements. You do not need to specify the table name(s); CFWheels will do that for you.
reload boolean No false Set to true to force CFWheels to query the database even though an identical query for this model may have been run in the same request. (The default in CFWheels is to get the second query from the model's request-level cache.)
parameterize any No true Set to true to use cfqueryparam on all columns, or pass in a list of property names to use cfqueryparam on those only.
includeSoftDeletes boolean No Set to true to include soft-deleted records in the queries that this method runs. 
// Checking if Joe exists in the database
result = model("user").exists(where="firstName = 'Joe'");

// Checking if a specific user exists based on a primary key valued passed in through the URL/form in an if statement
if (model("user").exists(keyparams.key))
{
	// Do something
}

// If you have a `belongsTo` association setup from `comment` to `post`, you can do a scoped call. (The `hasPost` method below will call `model("post").exists(comment.postId)` internally.)
comment = model("comment").findByKey(params.commentId);
commentHasAPost = comment.hasPost();

// If you have a `hasOne` association setup from `user` to `profile`, you can do a scoped call. (The `hasProfile` method below will call `model("profile").exists(where="userId=#user.id#")` internally.)
user = model("user").findByKey(params.userId);
userHasProfile = user.hasProfile();

// If you have a `hasMany` association setup from `post` to `comment`, you can do a scoped call. (The `hasComments` method below will call `model("comment").exists(where="postid=#post.id#")` internally.)
post = model("post").findByKey(params.postId);
postHasComments = post.hasComments();
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