public function EntityFieldQuery::fieldCondition in Drupal 7

Adds a condition on field values.

Note that entities with empty field values will be excluded from the EntityFieldQuery results when using this method.

Parameters

$field: Either a field name or a field array.

$column: The column that should hold the value to be matched, defined in the hook_field_schema() of this field. If this is omitted then all of the other parameters are ignored, except $field, and this call will just be adding a condition that says that the field has a value, rather than testing the value itself.

$value: The value to test the column value against. In most cases, this is a scalar. For more complex options, it is an array. The meaning of each element in the array is dependent on $operator.

$operator: The operator to be used to test the given value. The possible values are:

'=', '<>', '>', '>=', '<', '<=', 'STARTS_WITH', 'CONTAINS': These operators expect $value to be a literal of the same type as the column.
'IN', 'NOT IN': These operators expect $value to be an array of literals of the same type as the column.
'BETWEEN': This operator expects $value to be an array of two literals of the same type as the column.

The operator can be omitted, and will default to 'IN' if the value is an array, or to '=' otherwise.

$delta_group: An arbitrary identifier: conditions in the same group must have the same $delta_group. For example, let's presume a multivalue field which has two columns, 'color' and 'shape', and for entity ID 1, there are two values: red/square and blue/circle. Entity ID 1 does not have values corresponding to 'red circle'; however if you pass 'red' and 'circle' as conditions, it will appear in the results -- by default queries will run against any combination of deltas. By passing the conditions with the same $delta_group it will ensure that only values attached to the same delta are matched, and entity 1 would then be excluded from the results.

$language_group: An arbitrary identifier: conditions in the same group must have the same $language_group.

Return value

EntityFieldQuery The called object.

File

includes/entity.inc, line 731

Class

EntityFieldQuery: Retrieves entities matching a given set of conditions.

Code

public function fieldCondition($field, $column = NULL, $value = NULL, $operator = NULL, $delta_group = NULL, $language_group = NULL) {
  return $this
    ->addFieldCondition($this->fieldConditions, $field, $column, $value, $operator, $delta_group, $language_group);
}

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