Question

The recipe db continues…

categories

cid | category_name
 1  | desserts
 2  | cakes
 3  | biscuits

recipes

id | recipe_name
1  | black forest cake
2  | angel cake
3  | melting moments
4  | croquembouche
5  | crepes suzette

ingredients

iid | ingredient_code | ingredient_name      | ingredient_brand
 1  |     abc201      | self-raising flour   |    white wings
 2  |     abc202      | milk                 |    pura
 3  |     abc203      | chocolate            |    plaistock
 4  |     abc204      | baking powder        |    mackenzie
 5  |     abc205      | plain flour          |    white wings
 6  |     abc206      | eggs                 |    free range

recipe_categories

recipe_id | category_id
   1      |    1
   4      |    1
   5      |    1
   1      |    2
   2      |    2
   3      |    3
   4      |    3

recipe_ingredients

recipe_id | ingredient_id
   1      |    1
   2      |    1
   4      |    1
   1      |    2
   2      |    2
   3      |    2
   5      |    2
   1      |    3
   2      |    3
   1      |    4
   3      |    5
   4      |    5

As suggested by ozatomic, I’m using the following query:

SELECT A.recipe_name, GROUP_CONCAT(ingredient_name) AS ingredient_names
FROM recipes A
LEFT JOIN recipe_ingredients B ON A.id = B.recipe_id
LEFT JOIN ingredients C ON B.ingredient_id = C.iid
LEFT JOIN recipe_categories D ON A.id = D.recipe_id
LEFT JOIN categories E ON D.category_id = E.cid
WHERE category_id = <search_id>
GROUP BY id

Problem is, I’ve realised I’m going to need additional fields in the ingredients table, such as ingredient_code and ingredient_brand, which will mean that I’m unable to use GROUP_CONCAT to list ingredients as I need the following outputted to web (still by category):

black forest cake:
abc201  white wings   self-raising flour
abc202  pura          milk
abc203  plaistock     chocolate

croquembouche:
abc201  white wings   self-raising flour
abc204  white wings   plain flour

crepes suzette:
abc202  pura          milk
abc205  white wings   plain flour
abc206  free range    eggs 

I get the feeling that I’m either going to have to use two queries to achieve this, or use a foreach loop. Which would be best and how would I go about it?

edit: I also need to be able to format the results, using html tags or putting in divs or whatever.

Answer 1

The answer I gave when you asked this yesterday still applies. 🙂

You are indeed going to have to put together a list and loop over it to pull out the exact data you’re looking for.