Find item from EAV based on multiple rows - mysql

Question

Basically I am trying to build a 'Search by Attribute' function, so a user can choose a field or combination of fields in an EAV database structure e.g.:
CREATE TABLE `form` (
`formID` int(11) NOT NULL AUTO_INCREMENT,
`formName` varchar(255) NOT NULL,
PRIMARY KEY (`formID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
INSERT INTO `form` (`formID`, `formName`) VALUES
(1, 'A Form');
CREATE TABLE `formFields` (
`fieldID` int(11) NOT NULL AUTO_INCREMENT,
`formID` int(11) NOT NULL,
`fieldName` varchar(255) NOT NULL,
PRIMARY KEY (`fieldID`),
KEY `formID` (`formID`),
CONSTRAINT `formFields_ibfk_1` FOREIGN KEY (`formID`) REFERENCES `form` (`formID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
INSERT INTO `formFields` (`fieldID`, `formID`, `fieldName`) VALUES
(1, 1, 'Fruit'),
(2, 1, 'Car Make'),
(3, 1, 'Colour');
CREATE TABLE `item` (
`itemID` int(11) NOT NULL AUTO_INCREMENT,
`formID` int(11) NOT NULL,
`notes` varchar(1000) DEFAULT NULL,
PRIMARY KEY (`itemID`),
KEY `formID` (`formID`),
CONSTRAINT `item_ibfk_1` FOREIGN KEY (`formID`) REFERENCES `form` (`formID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
INSERT INTO `item` (`itemID`, `formID`, `notes`) VALUES
(1, 1, 'Some notes....'),
(2, 1, 'don\'t find this one');
CREATE TABLE `itemDetails` (
`itemID` int(11) NOT NULL,
`fieldID` int(11) NOT NULL,
`itemValue` varchar(1000) NOT NULL,
UNIQUE KEY `itemID_fieldID` (`itemID`,`fieldID`),
KEY `fieldID` (`fieldID`),
CONSTRAINT `itemDetails_ibfk_1` FOREIGN KEY (`itemID`) REFERENCES `item` (`itemID`),
CONSTRAINT `itemDetails_ibfk_2` FOREIGN KEY (`fieldID`) REFERENCES `formFields` (`fieldID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
INSERT INTO `itemDetails` (`itemID`, `fieldID`, `itemValue`) VALUES
(1, 1, 'apple'),
(1, 2, 'ford'),
(1, 3, 'orange'),
(2, 1, 'banana'),
(2, 2, 'toyota'),
(2, 3, 'blue');
CREATE OR REPLACE VIEW item_viewDetails AS
SELECT ff.formID, ff.fieldID, id.itemID, ff.fieldName, id.itemValue
FROM formFields ff
LEFT JOIN itemDetails id ON ff.fieldID = id.fieldID;
I have a view set up to return the itemID, formID, fieldID, fieldName and value. each item will have a minimum number of rows based on how many fields are in the form (the value is null if no itemDetails record exists)
currently I have a select statement that can search for 1 field eg: `WHERE view.fieldID = X AND view.value = Y
But I would also like to be able to search for multiple fields at the same time in an AND fashion. but of course i cannot do WHERE (view.fieldID = X AND view.value = Y) AND (view.fieldID = A AND view.value = B) as the details are accross multiple rows with a shared itemID. Is there any way to do this in mysql? or do I have to just OR it and then do checking on the application side to discard invalid results?
I have come up with a solution that does work, but I don't know if it is the best as it involves a sub-query with a view.
SELECT * FROM (
SELECT
COUNT(i.itemID) AS matches,
ia.*
FROM item_viewDetails ia
INNER JOIN item i ON i.itemID = ia.itemID
WHERE (ia.fieldID = 2 AND ia.itemValue = 'toyota') OR (ia.fieldID = 3 AND ia.itemValue = 'blue')
GROUP BY ia.itemID) AS m
WHERE m.matches = 2;
then as I generate the query, I just have to count the number of fields I am trying to match.