The example of the recipes is perfect. Please, let me add some spices. In the beginning, the recipes system is one table recipe and two fields (name and description) and one form...life was good.
Then the decision has been made to add the following schema features: adding 10 optional fields (can be null) each recipe can have a list of nutrition facts each recipe can have a list of ingredients (another recipe) in two forms ( recipes and nutrition facts). I know how to do all these features using DAL and web2py. the only difficulty (for me) is in developing the form recipes (using one controller and one view). I want to have the recipes form as follows: the two mandatory fields ( name , description) are shown (displayed to be filled) the user decides if he likes to add any of the ten optional fields ( he may choose none, so, none will be shown)(this is different from listing the ten fields and then he fills some and leaves some) the user can expand the nutrition facts button to display the list of nutrition of the recipe (he can add nutrition), in the same form. the user can expand the ingredients button to display the list of ingredients of the recipe (he can add ingredient), and he can get the ingredient details, because it is a recipe...the last level is recipe with no ingredient(like tomato)..all of this in the same form. This form seems similar to folder, subfolder and files ( tree). How do i build this one form (view) ? is there any web2py example similar? Regards, Ashraf --
