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== Functionality ==
= Introduction =
The overall goal is to be able to see what users think about a particular item . As an added benefit - users can also share information about where to buy the particular items.


This page contains a description of an example project that can be used to study different implementation techniques using VDF as a backend.
In this example the overall goal is to be able to see what users think about a particular item . As an added benefit - users can also share information about where to buy the particular items.


To accomplish this, then users should be able to:
To accomplish this, then users should be able to:


*login
*login
*create a user account
*choose an item from a list
*choose an item from a list
*enter information about a known item
*enter information about a known item  
*supply a rating of an item
*supply information about the place where an item was bought.
*supply information about the place where an item was bought.
*supply a review of an item
*Overview supplied reviews from other users




The system will implemented  as a web application, [[Using the AJAX Library]] and having a datamodel [[Using DataDictionaries]] .
The workspace is available here https://github.com/jacobandresen/ProductReview
 
== Data model [[Using DataDictionaries]] ==
 
=== Table layout  ===
We want to store information about users, places, purchases and known items. A user should be either a normal user or an administrator. The other tables should hold sufficient information about the items purchased and how the users liked them.
 
Create these tables in the database builder and create the associated data dictionaries .
 
The following data dictionaries  should now be available:
 
*Item_DataDictionary
*Place_DataDictionary
*Purchase_DataDictionary
*Rating_DataDictionary
*UserInfo_DataDictionary
 
== Application design  [[Using the AJAX Library]] ==


==== Webservice ====
= [[DataDictionary|Data Dictionaries]] =
Create a AJAX WebService to call from the clientside VDF Ajax lib. This webservice will be responsible for handling the serverside calls.
We want to store information about users, places and known items. The other tables should hold sufficient information about the items and how the users liked them.


this is the point of entry on the serverside (where information will be extracted from)
The following data dictionaries  should now be available (Note that attributes like "UserId" in Token implies a index  on UserId on Token and a relation to the table "User")


==== Session management ====
==User==
*UserId (Numeric) 
*LoginName (Ascii)
*FirstName (Ascii)
*LastName (Ascii)
*Password (Ascii)
*EmailAddress (Ascii)
*Rights (Ascii)
*StreetAddress (Ascii)
*City (Ascii)
*ZIPCode (Ascii)
*Country (Ascii)


*UserLogin: checking if the supplied password is correct. Use UserInfo_DD
==Token==
*HasRights: does the logged in user have the rights to perform the chosen function. Use UserInfo_DD
*UserId (Numeric)
*TokenValue (Ascii)
*LastAccessed (Date)


==== Creating the Web Objects ====
==Shop==
*item.wo : handling information about items.
*ShopId (Numeric)
*userinfo.wo : handling information about users
*Name (Ascii)
*place.wo: handling info about places
*Type (Numeric)
*purchase.wo: handle information about places
*Description (Ascii)
*rating.wo: handle information about ratings
*StreetAddress (Ascii)
*City (Ascii)
*ZIPCode (Ascii)
*Country (Ascii)


The Web Object should use the corresponding data dictionaries
==Product==
*ProductId (Numeric)
*Name (Ascii)
*Type (Numeric)
*Description (Ascii)
*ShopId (Numeric)
*Price (Numeric)


==== Creating the web markup ====
==Review==
The web markup should be designed around forms, that evolve around the web objects.
*ReviewId (Numeric)
*ItemId (Numeric)
*UserId (Numeric)
*Rating (Numeric)
*Comment (Ascii)


*Item.asp: a list to choose items from
= Implementation =
*Rating.asp: a list of items with detailed ratings. show details about related users and items.
*Place.asp: information about a place where items can be bought.
*RateItem.asp: a form to supply rating information about a particular item.
*Purchase.asp: information about what items users has bought at what place


== Implementation ==
[[ProductReview VDF AJAX implementation]]


== Coding the logic ==
[[Category: Web Applications]]
*Doing a Login page
[[Category: Data Dictionaries]]
*Listing items
**Items
**Places
**Users
*Supply ratings for an item

Latest revision as of 14:14, 8 April 2020

Introduction

This page contains a description of an example project that can be used to study different implementation techniques using VDF as a backend.

In this example the overall goal is to be able to see what users think about a particular item . As an added benefit - users can also share information about where to buy the particular items.

To accomplish this, then users should be able to:

  • login
  • choose an item from a list
  • enter information about a known item
  • supply information about the place where an item was bought.
  • supply a review of an item
  • Overview supplied reviews from other users


The workspace is available here https://github.com/jacobandresen/ProductReview

Data Dictionaries

We want to store information about users, places and known items. The other tables should hold sufficient information about the items and how the users liked them.

The following data dictionaries should now be available (Note that attributes like "UserId" in Token implies a index on UserId on Token and a relation to the table "User")

User

  • UserId (Numeric)
  • LoginName (Ascii)
  • FirstName (Ascii)
  • LastName (Ascii)
  • Password (Ascii)
  • EmailAddress (Ascii)
  • Rights (Ascii)
  • StreetAddress (Ascii)
  • City (Ascii)
  • ZIPCode (Ascii)
  • Country (Ascii)

Token

  • UserId (Numeric)
  • TokenValue (Ascii)
  • LastAccessed (Date)

Shop

  • ShopId (Numeric)
  • Name (Ascii)
  • Type (Numeric)
  • Description (Ascii)
  • StreetAddress (Ascii)
  • City (Ascii)
  • ZIPCode (Ascii)
  • Country (Ascii)

Product

  • ProductId (Numeric)
  • Name (Ascii)
  • Type (Numeric)
  • Description (Ascii)
  • ShopId (Numeric)
  • Price (Numeric)

Review

  • ReviewId (Numeric)
  • ItemId (Numeric)
  • UserId (Numeric)
  • Rating (Numeric)
  • Comment (Ascii)

Implementation

ProductReview VDF AJAX implementation

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