Currently if you try to create a product variation passing an empty array as the value of the image key using WC API:
Endpoint: `wp-json/wc/v2/products/PRODUCT_ID/variations`
Payload: `{ "attributes" : [ { "id" : 1, "name" : "color", "option" : "Green" } ], "dscription" : "Green Tea Variety", "image" : {} }`
WC will return the following error:
```
{ "code": "woocommerce_product_invalid_image_id", "data": { "status": 400 }, "message": "#0 is an invalid image ID." }
```
This is happening because the code that handles image creation
(4e42b2cd30/includes/api/class-wc-rest-product-variations-controller.php (L292)) is not checking if `$request['image']` is empty before adding a new `position` key to it. To fix this problem, this commit simply adds a check to see if `$request['image']` is empty before proceeding.
Fixes#19964
* Created function to get the catalog visibility options
* First methods for WP_Product crud
* Product set methods
* Fixed several erros while setting data
* First methods for WP_Product crud
* Product set methods
* Fixed several erros while setting data
* Hardcode the get_type per product class
* Initial look through getters and setters and abstract data
* Missing var
* Add related product functions and deprecate those in class.
* No need to exclude ID
* Fixed coding standards and improved the docblocks
* Get cached terms from wc_get_related_terms()
* Fixed wrong variable in wc_get_related_terms
* Use count() instead of sizeof()
* Sanitize ids later
* Remove unneeded comments
* wc_get_product_term_ids instead of related wording and use in other places.
get_the_terms is used here and also handles caching, something
wp_get_post_terms does not.
* Clean up the abstract product class a bit, deprecate two functions we have renamed, make update & create work properly, and add some tests for it.
* Bump template version
* Handle PR feedback: Remove duplicate regular_price update, allow changing of post status for products, remove deprecation for get_title since we might still offer it as a function
* Made abstract function useful
* External Product CRUD
* _virtual meta should be 'no', not taxable, in product unit test helper
* Grouped product class
* Tests
* Move children to meta and update test
* Use get_upsell_ids
* Spacing in query
* Moving and refactoring methods
* Availability html
* Tidy/add todos
* Rename method
* Put back review functions (still todo)
* missing $this
* get_price_including_tax/excluding_tax functions
* wc_get_price_to_display
* Price handling
* [Product CRUD] Variable (#12146)
* [Product CRUD] Variable Products
* Handle PR feedback.
* [Product CRUD] Grouped Handling (#12151)
* Handle grouped product saving
* Update routine
* [Product CRUD] Product crud terms (#12149)
* Category and tag id handling
* Replace template functions
* Remove todo
* Handle default name in save function
* Product crud admin save routine (#12174)
* Initial props
* Work on admin saving
* Set/get attributes
* Atom was moaning about this before but no longer.
* Update get_shipping_class
* WC_Product_Attribute
* Use getter in admin panel
* Fix attribute saving
* Spacing
* Fix comment
* wc_implode_text_attributes helper function
* [Product CRUD] Product crud admin use getters (#12196)
* Initial props
* Work on admin saving
* Set/get attributes
* Atom was moaning about this before but no longer.
* Update get_shipping_class
* WC_Product_Attribute
* Use getter in admin panel
* Fix attribute saving
* Move settings into new files
* Refactor panels and use getters
* Use getters for variation panel
* Revert save variation changes for now
* Add todos
* Fix downloads
* REST API CRUD Updates
* Additional API updates/fixes. Added some todos
* Fix final failing tests and implementing setters/getters and attributes functionality.
* Fix comparison for is_on_sale and remove download_type from WC_Product.
* Add a wc_get_products wrapper.
* Remove the download type input from the product data metabox for downloadable products. (#12221)
* [Product CRUD] Variations - setters, getters and admin. (#12228)
* Started on variation changes
* Stock functions
* Variation class
* Bulk change ->id to get_id() to fix variation form display
* Missing status
* Fix add to cart
* Start on stored data save
* save variation
* Save_variations
* Variation edit panel
* Save variations code works.
* Remove stored data code and fix save
* Improve legacy class
* wc_bool_to_string
* prepare_set_attributes
* Use wc_get_products
* More feedback fixes
* Feedback fixes
* Implement CRUD in the legacy REST API
* Handle PR feedback
* [Product CRUD] Getter setter proxy methods (#12236)
* Started on variation changes
* Stock functions
* Variation class
* Bulk change ->id to get_id() to fix variation form display
* Missing status
* Fix add to cart
* Start on stored data save
* save variation
* Save_variations
* Variation edit panel
* Save variations code works.
* Remove stored data code and fix save
* Improve legacy class
* wc_bool_to_string
* prepare_set_attributes
* Use wc_get_products
* More feedback fixes
* get_prop implementation in abstract and data classes
* Implement set_prop
* Change handling
* Array key exists
* set_object_read
* Use get_the_terms() instead of wp_get_post_terms()
wp_get_post_terms() is a wrapper around wp_get_object_terms() which does not
use the object cache, and generates a database query every time it is used.
get_the_terms() however can use data from the object cache if present.
* Allow WP_Query to preload post data, and meta in wc_get_products()
Allow WP_Query to bulk query for post data and meta if more than
just IDs are requested from wc_get_products(). Reduces query count
significantly.
* [Product CRUD] Variable, variation, notices, and stock handling (#12277)
* No longer needed
* Remove old todos
* Use getters in admin list
* Related and upsells update for CRUD
* Fix notice in gallery
* Variable fixes and todos
* Context
* Price sync
* Revert variation attributes change
* Return parent data in view context
* Defer term counting
* wc_find_matching_product_variation
* Stock manage tweaks
* Stock fixes
* Correct id
* correct id
* Better sync
* Data logic setter fix
* feedback
* First methods for WP_Product crud
* Product set methods
* Fixed several erros while setting data
* Hardcode the get_type per product class
* Initial look through getters and setters and abstract data
* Missing var
* Fixed coding standards and improved the docblocks
* Get cached terms from wc_get_related_terms()
* Fixed wrong variable in wc_get_related_terms
* Use count() instead of sizeof()
* Add related product functions and deprecate those in class.
* No need to exclude ID
* Sanitize ids later
* Clean up the abstract product class a bit, deprecate two functions we have renamed, make update & create work properly, and add some tests for it.
* Remove unneeded comments
* wc_get_product_term_ids instead of related wording and use in other places.
get_the_terms is used here and also handles caching, something
wp_get_post_terms does not.
* Handle PR feedback: Remove duplicate regular_price update, allow changing of post status for products, remove deprecation for get_title since we might still offer it as a function
* External Product CRUD
* _virtual meta should be 'no', not taxable, in product unit test helper
* Bump template version
* Made abstract function useful
* Grouped product class
* Tests
* Move children to meta and update test
* Use get_upsell_ids
* Spacing in query
* Moving and refactoring methods
* Availability html
* Tidy/add todos
* Rename method
* Put back review functions (still todo)
* missing $this
* get_price_including_tax/excluding_tax functions
* wc_get_price_to_display
* Price handling
* [Product CRUD] Variable (#12146)
* [Product CRUD] Variable Products
* Handle PR feedback.
* [Product CRUD] Grouped Handling (#12151)
* Handle grouped product saving
* Update routine
* [Product CRUD] Product crud terms (#12149)
* Category and tag id handling
* Replace template functions
* Remove todo
* Handle default name in save function
* Product crud admin save routine (#12174)
* Initial props
* Work on admin saving
* Set/get attributes
* Atom was moaning about this before but no longer.
* Update get_shipping_class
* WC_Product_Attribute
* Use getter in admin panel
* Fix attribute saving
* Spacing
* Fix comment
* wc_implode_text_attributes helper function
* [Product CRUD] Product crud admin use getters (#12196)
* Initial props
* Work on admin saving
* Set/get attributes
* Atom was moaning about this before but no longer.
* Update get_shipping_class
* WC_Product_Attribute
* Use getter in admin panel
* Fix attribute saving
* Move settings into new files
* Refactor panels and use getters
* Use getters for variation panel
* Revert save variation changes for now
* Add todos
* Fix downloads
* REST API CRUD Updates
* Additional API updates/fixes. Added some todos
* Fix final failing tests and implementing setters/getters and attributes functionality.
* Fix comparison for is_on_sale and remove download_type from WC_Product.
* Add a wc_get_products wrapper.
* Remove the download type input from the product data metabox for downloadable products. (#12221)
* [Product CRUD] Variations - setters, getters and admin. (#12228)
* Started on variation changes
* Stock functions
* Variation class
* Bulk change ->id to get_id() to fix variation form display
* Missing status
* Fix add to cart
* Start on stored data save
* save variation
* Save_variations
* Variation edit panel
* Save variations code works.
* Remove stored data code and fix save
* Improve legacy class
* wc_bool_to_string
* prepare_set_attributes
* Use wc_get_products
* More feedback fixes
* Feedback fixes
* Implement CRUD in the legacy REST API
* Handle PR feedback
* [Product CRUD] Getter setter proxy methods (#12236)
* Started on variation changes
* Stock functions
* Variation class
* Bulk change ->id to get_id() to fix variation form display
* Missing status
* Fix add to cart
* Start on stored data save
* save variation
* Save_variations
* Variation edit panel
* Save variations code works.
* Remove stored data code and fix save
* Improve legacy class
* wc_bool_to_string
* prepare_set_attributes
* Use wc_get_products
* More feedback fixes
* get_prop implementation in abstract and data classes
* Implement set_prop
* Change handling
* Array key exists
* set_object_read
* Use get_the_terms() instead of wp_get_post_terms()
wp_get_post_terms() is a wrapper around wp_get_object_terms() which does not
use the object cache, and generates a database query every time it is used.
get_the_terms() however can use data from the object cache if present.
* [Product CRUD] Variable, variation, notices, and stock handling (#12277)
* No longer needed
* Remove old todos
* Use getters in admin list
* Related and upsells update for CRUD
* Fix notice in gallery
* Variable fixes and todos
* Context
* Price sync
* Revert variation attributes change
* Return parent data in view context
* Defer term counting
* wc_find_matching_product_variation
* Stock manage tweaks
* Stock fixes
* Correct id
* correct id
* Better sync
* Data logic setter fix
* feedback
* Prevent notices
* Handle image_id from parent
* Fix error
* Remove _wc_save_product_price
* Remove todo
* Fixed wrong variation URLs
* Fixed undefined $image_id in WC_Product_Variation::get_image_id()
* Allow wc_rest_prepare_date_response() handle timestamps
* Updated get methods on REST API for variations
* Use variations CRUD to save variations metadata
* [Product CRUD] Abstract todos (#12305)
* Get dimensions and weights, with soft deprecation
* Product attributes
* Ratings
* Fix read method
* Downloads
* Feedback
* Revert "[Product CRUD] Abstract todos (#12305)"
This reverts commit 9a6136fcf8.
* Remove deprecated get_variation_id()
* New default attributes method
* [Product CRUD] Product Datastore (#12317)
* Fix up tests in the product/* folder.
* Handle data store updates for grouped, variable, external, simple, and general data store updates for products.
* Variations & variable changes.
* Update -functions.php calls to use data store.
* Add an interface for the public product data store methods.
* Finished product factory tests
* Correctly delete in the api, fix up some comments, and implement an interface for the public variable methods.
* Fix up delete in all versions of the api
* Handle feedback
* Match protected decloration to parent
* Product crud abstract todos (#12316)
* Get dimensions and weights, with soft deprecation
* Product attributes
* Ratings
* Fix read method
* Downloads
* Feedback
* Fix up store
* Fixed method returning in write context
* Fix error in variation admin
* Check for parent value - fixes tax class
* Remove old/complete todos
* Allow set tax class as "parent"
* Removed duplicated sync
* Fixed wrong variation URLs
* Fixed undefined $image_id in WC_Product_Variation::get_image_id()
* Allow wc_rest_prepare_date_response() handle timestamps
* Updated get methods on REST API for variations
* Use variations CRUD to save variations metadata
* Remove deprecated get_variation_id()
* New default attributes method
* Fixed method returning in write context
* Allow set tax class as "parent"
* Removed duplicated sync
* Fixed coding standards
* TODO is not accurate.
* Should pass WC_Product instancies to WC_Comments methods (#12327)
* Use new method in abstract order class to prevent headers sent issue in tests
* Fixed variable description in REST API
* Updated how create initial product variation
* Fixed a few fatal errors and warnings in Products CRUD (#12329)
* Fixed a few fatal errors and warnings in Products CRUD
* Fixed sync functions
* Add variations CRUD to legacy API (#12331)
* Apply crud to variable products in legacy API v1
* New REST API do not need fallback for default attributes
* Apply variations CRUD to legacy API v2
* Legacy v2 - save default attributes
* Variations in legacy API v2 do not have descriptions
* Fixed legacy API v2 variations params
* Applied variations CRUD to legacy API v3
* Sync before save in legacy apis
* Punc
* Removed API todos
* Removed test
* Products endpoint tweaks (#12354)
* Var type already normalized on CRUD
* Let Product CRUD handle with validation, sanitization and conditional checks
* Set downloads using WC_Product_Download
* Stop try catch exceptions more than one time
* Handle WC_Data_Exception in legacy API
* Complete remove products when fails on creating
* On creating I mean!
* Already have a method to complete delete products
* Fixed standards using WP CodeSniffer
* get_the_terms() returns false when empty
* get_manage_stock returns boolean
@claudiosanches
* Merge conflict
* Variations API endpoint fixes
* Product CRUD improvements (#12359)
* args is not used any more - remove todo
* Added test for attributes
* wc_get_price_excluding_tax usage
* parent usage
* Fix rating counts
* Test fixes
* Cleanup after tests
* Make sure status transition code runs even during API calls, not just in admin.
* Default visibility
* Fix attribute setting in API
* Use get name instead of get title
* variation id usage
* Improved cross sell templates
* variation_data
* Grouped product sync
* Notices
* Sync is not needed in API
* Delete
* Rename interfaces
* Update counts in data store
* Fixed case for all _e, esc_attr_e and esc_html_e strings
* Fixed case for all _n_noop strings
* Fixed case for all _x strings
* Fixed case for all __, esc_html__ and esc_attr__ strings
* Fixed a few more strings
* Fixed strings in unit tests
* Fix PayPal Standard case.
* Save Order text
Rodrigo Primo
Mike Jolley
Claudio Sanches
Rasmus Bengtsson
Claudio Sanches
Claudiu Lodromanean
Rami Yushuvaev
Justin Shreve