Revision 34cc5469
Von Sven Schöling vor mehr als 7 Jahren hinzugefügt
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Implementations can choose to make prices editable, but even then deviations
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from the calculatied price will be marked.
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A that is not set from a source will not have any of this.
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A price that is not set from a source will not have any of this.
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=item 3.
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| ... | ... | |
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=head1 STRUCTURE
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Price sources are managed by this package (L<SL::PriceSource>), and all
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external access should be by using it's interface.
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external access should be by using its interface.
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Each source is an instance of L<SL::PriceSource::Base> and the available
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implementations are recorded in L<SL::PriceSource::ALL>. Prices and discounts
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returned by interface methods are instances of L<SL::PriceSource::Price> and
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L<SL::PriceSource::Discout>.
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L<SL::PriceSource::Discount>.
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Returned prices and discounts should be checked for entries in C<invalid> and
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C<missing>, see documentation in their classes.
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| ... | ... | |
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=item C<best_price>
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Attempts to get the best available price. returns L<empty_price> if no price is found.
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Attempts to get the best available price. returns L<empty_price> if no price is
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found.
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=item C<best_discount>
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Attempts to get the best available discount. returns L<empty_discount> if no discount is found.
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Attempts to get the best available discount. returns L<empty_discount> if no
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discount is found.
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=item C<empty_price>
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A special empty price, that does not change the previously entered price, and
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A special empty price that does not change the previously entered price and
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opens the price field to manual changes.
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=item C<empty_discount>
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A special empty discount, that does not change the previously entered discount, and
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opens the discount field to manual changes.
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A special empty discount that does not change the previously entered discount
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and opens the discount field to manual changes.
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=back
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sense anymore. The guarantees should be updated to reflect this and
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transposition guidelines should be documented.
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The previously mentioned linked prices can emulated by allowing price sources
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to set a new price when changing to a new record in the workflow. The decision
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about whether a price is eligable to be set can be suggested by the price
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source implementation but is ultimately up to the surrounding framework, which
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can make this configurable.
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=item *
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Prices were originally planned as a context element rather than a modal popup.
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It would be great to have this now with better framework.
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=item *
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Large records (30 positions or more) in combination with complicated price
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sources run into n+1 problems. There should be an extra hook that allows price
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source implementations to make bulk calculations before the actual position loop.
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=back
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=head1 AUTHOR
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Auch abrufbar als: Unified diff
PriceSource doku