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This commit adds new Repository and Entity classes which are better
abstracted from the rest of the application. They dont know anymore
about configuration options or how to parse to HTML because this is
not the job for the ORM but for other parts of the application.
The previous commits were a preparation for this big change.
An entity now represents just a single record from a specific table
of the database – nothing more. The repositories job is it to fetch
or update records of the database and instantiate the entities.
Another problem that was solved is the high amount of database queries
that was needed before. For example, on the blogs home page first were
all 10 latest post IDs fetched from the database and then another query
was executed with "WHERE id = :id" for *each* single post?! ...
This problem is solved with the new repository classes; they now use a
single query to fetch and build the entities of the 10 latest posts.
This change also solves the problem with database queries spread across
the application and limits the exzessive use of try/catch blocks which
were used before. The new classes make the whole code much cleaner. :)
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In addition to the last commit, remove the unnecessary PHP closing tags from the end of the files and ensure that the files ending with an LF character.
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previous commits result in version 2.0 (database update required):
+ Implemented [core]: A new database field has been added to all tables to define optional "arguments" for a page, post or user through the content editor. These arguments will be parsed into key->value pairs and can be used within templates to do something special. Please read the wiki of this repository for further information about this new feature.
+ Bugfix [core]: The function "makeSlugURL" had not convert uppercase umlauts to lowercase because "strtolower" was used instead of the multibyte equivalent "mb_strtolower".
+ Optimization [core]: The first regular expression within the function "makeSlugURL" has been optimized (checking for uppercase characters at this point is unnecessary because $string is only lowercase).
+ Optimization [all templates]: Markup for the pagination.php has been simplified (a little bit).
+ Optimization [admin template]: The javascript for the arrow key navigation has been outsourced to the main.js file.
+ Optimization [admin template]: The javascript file will now be included with the "defer" attribute.
+ Optimization [standard template]: Some language variables have been changed.
Database update to version 2.0 (no existing data will be lost or changed):
ALTER TABLE `page` ADD `argv` VARCHAR(100) NULL DEFAULT NULL AFTER `body`;
ALTER TABLE `post` ADD `argv` VARCHAR(100) NULL DEFAULT NULL AFTER `body`;
ALTER TABLE `user` ADD `argv` VARCHAR(100) NULL DEFAULT NULL AFTER `body`;
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