Difference between revisions of "API/Write"

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Revision as of 15:30, 30 March 2018

WRITE API Documentation

Status Codes

If the edit was successful

{"status_verbose":"fields saved","status":1}

If there was an issue

Wrong password

HTML 200 code + an HTML page with a link to login

Example: https://world.openfoodfacts.org/cgi/product_jqm2.pl?code=0048151623426&user_id=usernameexample&password=*****&product_name=KIRI%2

Authentification

  • user_id
  • password

WARNING: If the password is not correct, the API will currently "silently" fail, both for image addition and product data addition (will return HTML 200 code + an html page with a link to login - example )

Anonymous contribution

  • It is possible for new products (no anonymous modification is possible though, for obvious reasons)
  • It is possible for adding images (as many as you like)
  • If you detect an error 200 (wrong password), please retry the query without user_id and password. That way the contribution will be accepted. Otherwise, the photo will get lost :(

Global account

If you want to avoid coding the detection of password errors, login stuff… you can create a global account for all your users.

You can create a global account to let the users of your app contribute. please name it YourApp_app or something like that, so that we can spot them easily. Better yet, introduce yourself on Slack :-)

Manipulating photos for a product

Understanding products and photos

  • Photos are the primary source of Open Food Facts.
  • We need good photos of the product, of its ingredients and nutrition table. (and for each language present on the packaging)
  • Please encourage your users to add as many photos as possible, even if the product is already complete (in that case, don't set them as default photos for front, ingredients, and nutrition)

Upload behaviour

If you upload an image (eg for front), the first one will be shown, the others will be saved but not displayed. Useful if you want to let your users take additional images that are neither front, ingredients or nutrition (eg: recycling instructions, labels…)

Understanding photos for multilingual products

Multilingual products have several photos based on languages present on the packaging. Just suffix the lang code to our examples to get or add the relevant language(s).

Adding photos for a product

  • Use the POST method on:
Test server: https://world.openfoodfacts.net/cgi/product_image_upload.pl
Live server: https://world.openfoodfacts.org/cgi/product_image_upload.pl

(remember to do tests on world.openfoodfacts.net - login and password: off )

Parameters
  • code: the barcode
  • imagefield: (front | ingredients | nutrition)
  • imgupload_front : your image file if imagefield:front
  • imgupload_ingredients: your image file if imagefield:ingredients
  • imgupload_nutrition: your image file if imagefield:nutrition


Example
curl --user off:off --form "imgupload_front=@Tacitus.jpg" --form code=1212121212 --form imagefield=front --form user_id=tacite  --form password=mypassword https://fr.openfoodfacts.net/cgi/product_image_upload.pl
Important
  • Content-Disposition: form-data; name=“imgupload_front”; filename=“front.png”
  • There must be a HTTP header "Content-Type: multipart/form-data" in the HTTP POST request.
  • The imageupload_(front|ingredients|nutrition) name, size and data needs to be encoded in the multipart/form-data format, usually your HTTP request library will do that for you.
  • All parameters need to be passed as POST parameters, do not put some in the URL.
  • 0048151623426 is a random barcode used only for demonstration purposes.

Getting a list of all available photos

You get a list of all available photos in the product JSON (both selected photos for all languages, and Raw photos (source images for the selected images and images that are not used)

Properties of a photo
  • id = 5
  • uploaded_t = 1474912158 (UNIX timestamp format)
  • uploader = tacinte (contributor slug)
  • sizes

100 "h":100, "w":75

  • 400

"h":400, "w":300

  • full

"w":3120, "h":4160

Properties of a selected photo
  • nutrition_fr
  • y1 = 151.8125
  • normalize":"true",
  • x2":"169.75",
  • rev":"13",
  • geometry":"1238x1238-527-1578"
  • sizes
  • 100

"h":100, "w":75

  • 200
  • 400

"h":400, "w":300

  • full

"w":3120, "h":4160

  • y2 = 270.8125
  • x1 = 50.75
  • angle = 0
  • white_magic = false
  • imgid = 4
      "images":{  
         "front_fr":{  
            "y2":"340.8125",
            "x1":"67.75",
            "angle":"0",
            "imgid":"5",
            "white_magic":"false",
            "x2":"245.75",
            "normalize":"true",
            "y1":"13.8125",
            "rev":"10",
            "geometry":"1851x3401-704-143",
            "sizes":{  
               "400":{  
                  "w":218,
                  "h":400
               },
               "full":{  
                  "h":3401,
                  "w":1851
               },
               "100":{  
                  "w":54,
                  "h":100
               },
               "200":{  
                  "h":200,
                  "w":109
               }
            }
         },
         "2":{  
            "sizes":{  
               "400":{  
                  "h":400,
                  "w":300
               },
               "full":{  
                  "h":4160,
                  "w":3120
               },
               "100":{  
                  "w":75,
                  "h":100
               }
            },
            "uploaded_t":"1474912149",
            "uploader":"tacinte"
         },
         "5":{  
            "uploaded_t":"1474912158",
            "uploader":"tacinte",
            "sizes":{  
               "100":{  
                  "h":100,
                  "w":75
               },
               "400":{  
                  "h":400,
                  "w":300
               },
               "full":{  
                  "w":3120,
                  "h":4160
               }
            }
         },
         "3":{  
            "uploaded_t":"1474912152",
            "uploader":"tacinte",
            "sizes":{  
               "full":{  
                  "w":3120,
                  "h":4160
               },
               "400":{  
                  "h":400,
                  "w":300
               },
               "100":{  
                  "h":100,
                  "w":75
               }
            }
         },
         "nutrition_fr":{  
            "y1":"151.8125",
            "normalize":"true",
            "x2":"169.75",
            "rev":"13",
            "geometry":"1238x1238-527-1578",
            "sizes":{  
               "full":{  
                  "w":1238,
                  "h":1238
               },
               "400":{  
                  "h":400,
                  "w":400
               },
               "100":{  
                  "w":100,
                  "h":100
               },
               "200":{  
                  "w":200,
                  "h":200
               }
            },
            "y2":"270.8125",
            "x1":"50.75",
            "angle":"0",
            "white_magic":"false",
            "imgid":"4"
         },
         "4":{  
            "sizes":{  
               "400":{  
                  "w":300,
                  "h":400
               },
               "full":{  
                  "h":4160,
                  "w":3120
               },
               "100":{  
                  "h":100,
                  "w":75
               }
            },
            "uploader":"tacinte",
            "uploaded_t":"1474912154"
         },
         "ingredients_fr":{  
            "y2":"248.8125",
            "x1":"82.75",
            "angle":"0",
            "white_magic":"false",
            "imgid":"3",
            "normalize":"true",
            "y1":"158.8125",
            "x2":"257.75",
            "rev":"12",
            "sizes":{  
               "full":{  
                  "w":1820,
                  "h":936
               },
               "400":{  
                  "h":206,
                  "w":400
               },
               "100":{  
                  "h":51,
                  "w":100
               },
               "200":{  
                  "h":103,
                  "w":200
               }
            },
            "geometry":"1820x936-860-1651"
         },
         "1":{  
            "sizes":{  
               "full":{  
                  "w":3120,
                  "h":4160
               },
               "400":{  
                  "h":400,
                  "w":300
               },
               "100":{  
                  "w":75,
                  "h":100
               }
            },
            "uploaded_t":"1474912148",
            "uploader":"tacinte"
         }
      },

Adding a photo to the list of all available photos

Getting the current global photo

Setting a new current global photo

Getting the current ingredients photo

Setting a new current ingredients photo

Getting the current nutrition photo

Setting a new current nutrition photo

Choosing the product by barcode

code=

Values:

Selecting a photo

imgid=

Values:

Rotating a photo

Test server: https://world.openfoodfacts.net/cgi/product_image_rotate.pl
Live server: https://world.openfoodfacts.org/cgi/product_image_rotate.pl
Values and output

Parameters: 

imgid =
code = BARCODE
angle = Angle of the rotation - 90° increments
normalize = whether the source image should be normalized
white_magic = whether the source image should be "white magic"'d ( background removal)

function update_image(imagefield) {

	$('#crop_' + imagefield).attr("src","/cgi/product_image_rotate.pl?code=" + code + "&imgid=" + imagefield_imgid[imagefield]
		+ "&angle=" + angles[imagefield] + "&normalize=" + $("#normalize_" + imagefield).prop('checked')
		+ "&white_magic=" + $("#white_magic_" + imagefield).prop('checked')		);
	$('div[id="cropbuttonmsg_' + imagefield +'"]').hide();
}

Removing background on a photo ("White magic")

This will work best on photos with a white background. Best use case is to let user try it and give up if the result is not satisfying. 

white_magic=

Values:

Color correction on a photo ("Normalize")

normalize=

Values:

Cropping a photo

This implies applying operations to a source image (not only cropping, but all the others if applicable). We start from a source image (defined by a barcode and incremental id), apply cropping parameters (x1, y1, x2, y2), additional operations (white_magic, normalize) 

Test server: https://world.openfoodfacts.net/cgi/product_image_crop.pl
Live server: https://world.openfoodfacts.org/cgi/product_image_crop.pl
Values
code=BARCODE
id=
angle= Angle of the rotation
normalize = whether the source image should be normalized
white_magic = whether the source image should be white magiced ( background removal)
type = add
action = display
imgid =
x1= the X origin of the crop
y1=the Y origin of the crop
x2=the X end of the crop
y2=the Y end of the crop
Ignore me
$.post('/cgi/product_image_crop.pl',
						{code: code, id: imagefield , imgid: imgid,
						x1:selection.x, y1:selection.y, x2:selection.x + selection.width, y2:selection.y + selection.height,
						angle:angles[imagefield], normalize:$("#normalize_" + imagefield).prop('checked'), 
						white_magic:$("#white_magic_" + imagefield).prop('checked') }, function(data) {
						
					imagefield_url[imagefield] = data.image.display_url;
					update_display(imagefield, false);
					$('div[id="cropbutton_' + imagefield +'"]').show();
					$('div[id="cropbuttonmsg_' + imagefield +'"]').html(Lang.image_saved);
					$(document).foundation('equalizer', 'reflow');
				}, 'json');
			});

Performing OCR on a photo

We start from a source image (defined by barcode and id) as selected for ingredients. We ask Product Opener to process it (process_image=1). Product Opener returns a JSON. Processing is done using Tesseract (3 on preprod). The result is often cripped with errors. Take steps to avoid direct copy pasting into the ingredients field by your users. 

Test server: https://world.openfoodfacts.net/cgi/ingredients.pl
Live server: https://world.openfoodfacts.net/cgi/ingredients.pl
Values and output
code=code
id=imagefield
process_image=1

This will return JSON

Ignore me
		$.post('/cgi/ingredients.pl',
				{ }, function(data) {
				
			if (data.status == 0) {
				$('div[id="ocrbuttondiv_' + imagefield +'"]').html(Lang.extracted_ingredients_ok);
				var ingredients_text_id = imagefield.replace("ingredients","ingredients_text");
				$("#" + ingredients_text_id).val(data.ingredients_text_from_image);
			}
			else {
				$('div[id="ocrbuttondiv_' + imagefield +'"]').html(Lang.extracted_ingredients_nok);
			}
			$(document).foundation('equalizer', 'reflow');
		}, 'json');

Posting a new product

  • Do a GET request, otherwise you'll get 
     {“status_verbose”: “no code or invalid code”,“status”: 0}
  • URL: 
    https://world.openfoodfacts.org/cgi/product_jqm2.pl
    (Product post)(remember to do tests on world.openfoodfacts.net - login and password: off )
  • URL for your tests : 
    https://world.openfoodfacts.net/cgi/product_jqm2.pl

Quick overview

  • var foodfact = { barcode : '0048151623426', name : 'Product name', energy: 500, energy_unit: "kJ", weight: 282 };
  • var postData = {
  • code : foodfact.barcode,
  • user_id : "mesinfosnutritionelles",
  • password : "****",
  • product_name : foodfact.name?foodfact.name:foodfact.shop_label,
  • quantity : foodfact.weight?""+foodfact.weight+" g":undefined,
  • stores : "Walmart",
  • nutriment_energy :foodfact.energy,
  • nutriment_energy_unit :foodfact.energy_unit,
  • nutrition_data_per :"serving"
Status after save
  • {"status_verbose":"fields saved","status":1}

Example

(remember to do tests on world.openfoodfacts.net - login and password: off)

Query 1 : Unauthentified query
https://world.openfoodfacts.net/cgi/product_jqm2.pl?code=0048151623426&product_name=Maryland%20Choc%20Chip&quantity=230g&brand=Golden%20Cookies&nutriment_energy=450&nutriment_energy_unit=kJ&nutrition_data_per=serving&ingredients_text=Fortified%20wheat%20flour%2C%20Chocolate%20chips%20%2825%25%29%2C%20Sugar%2C%20Palm%20oil%2C%20Golden%20syrup%2C%20Whey%20and%20whey%20derivatives%20%28Milk%29%2C%20Raising%20agents%2C%20Salt%2C%20Flavouring&traces=Milk%2C+Soya%2C+Nuts%2C+Wheat
Result 2
https://uk.openfoodfacts.net/product/0072417136160/maryland-choc-chip
Query 2 : Authentified query
https://world.openfoodfacts.org/cgi/product_jqm2.pl?code=0048151623426&user_id=usernameexample&password=*****&product_name=KIRI%20GOUTER%20280G%208%20PORTIONS&quantity=282%20g&stores=Intermarch%C3%A9&nutriment_energy=500&nutriment_energy_unit=kJ&nutrition_data_per=serving
Result 2
If credentials are correct
Standard success status, see above
If credentials are not correct

Will give you a responsive HTML login page.

See editing a product for details on fields

Posting several values for a field

When adding values, send to the field labels as comma separated values that are canonicalised and added to the _tags array 

labels = "labelA, labelB"

Reading back, use labels_tags to get an array of labels

Editing an existing product

Posting additional photos

  • Photos post on /cgi/product_image_upload.pl
    • code: the barcode
    • imagefield: (front | ingredients | nutrition)
Add more pictures without selecting them
  • imagefield: (other)
Select the Front picture
  • imgupload_front : your image file if imagefield:front
Select the Ingredients picture
  • imgupload_ingredients: your image file if imagefield:ingredients
Select the Nutrition Facts picture
  • imgupload_nutrition: your image file if imagefield:nutrition

Editing the product

Give the barcode

code=072417136160


Add the brand

brand=Heinz

Add the name

product_name=Maryland%20Choc%20Chip

Add the quantity

quantity=230g

Add the packager code

emb_codes_tag=EMB%2013330

Add the packaging type

packaging=Cardboard

Add the labels

labels=Vegan%2C%20Fat%20free

Add the Stores where bought

stores=Intermarch%C3%A9

Add the category

categories=Cookies

Add the best before date

expiration_date=

Add the link to the official webpage of the product

link=

Add the ingredients

ingredients_text=Fortified%20wheat%20flour%2C%20Chocolate%20chips%20%2825%25%29%2C%20Sugar%2C%20Palm%20oil%2C%20Golden%20syrup%2C%20Whey%20and%20whey%20derivatives%20%28Milk%29%2C%20Raising%20agents%2C%20Salt%2C%20Flavouring

Add ingredient traces

traces=Milk%2C+Soya%2C+Nuts%2C+Wheat

Add the main language

You can set the main language of the product.

lang=fr



(NOT LIVE YET) In the case of a multilingual product, you can specify the main language of the product, and you can then specify values and images for different languages by suffixing the language code to the other fields.

Add the nutrition facts

Indicate the absence of nutrition facts
no_nutriments : indicates if the nutrition facts are indicated on the food label
Add nutrition facts values, units and base
Define the basis for the values
nutrition_data_per=100g


OR

nutrition_data_per=serving
serving_size=38g
Input values and units
nutriment_energy=450
nutriment_energy_unit=kJ
Values
nutriment_energy
nutriment_proteins
nutriment_casein
nutriment_serum-proteins
nutriment_nucleotides
nutriment_carbohydrates
nutriment_sugars
nutriment_sucrose
nutriment_glucose
nutriment_fructose
nutriment_lactose
nutriment_maltose
nutriment_maltodextrins
nutriment_starch
nutriment_polyols
nutriment_fat
nutriment_saturated-fat
nutriment_butyric-acid
nutriment_caproic-acid
nutriment_caprylic-acid
nutriment_capric-acid
nutriment_lauric-acid
nutriment_myristic-acid
nutriment_palmitic-acid
nutriment_stearic-acid
nutriment_arachidic-acid
nutriment_behenic-acid
nutriment_lignoceric-acid
nutriment_cerotic-acid
nutriment_montanic-acid
nutriment_melissic-acid
nutriment_monounsaturated-fat
nutriment_polyunsaturated-fat
nutriment_omega-3-fat
nutriment_alpha-linolenic-acid
nutriment_eicosapentaenoic-acid
nutriment_docosahexaenoic-acid
nutriment_omega-6-fat
nutriment_linoleic-acid
nutriment_arachidonic-acid
nutriment_gamma-linolenic-acid
nutriment_dihomo-gamma-linolenic-acid
nutriment_omega-9-fat
nutriment_oleic-acid
nutriment_elaidic-acid
nutriment_gondoic-acid
nutriment_mead-acid
nutriment_erucic-acid
nutriment_nervonic-acid
nutriment_trans-fat
nutriment_cholesterol
nutriment_fiber
nutriment_sodium
nutriment_alcohol : % vol of alcohol
nutriment_vitamin-a
nutriment_vitamin-d
nutriment_vitamin-e
nutriment_vitamin-k
nutriment_vitamin-c
nutriment_vitamin-b1
nutriment_vitamin-b2
nutriment_vitamin-pp
nutriment_vitamin-b6
nutriment_vitamin-b9
nutriment_vitamin-b12
nutriment_biotin
nutriment_pantothenic-acid
nutriment_silica
nutriment_bicarbonate
nutriment_potassium
nutriment_chloride
nutriment_calcium
nutriment_phosphorus
nutriment_iron
nutriment_magnesium
nutriment_zinc
nutriment_copper
nutriment_manganese
nutriment_fluoride
nutriment_selenium
nutriment_chromium
nutriment_molybdenum
nutriment_iodine
nutriment_caffeine
nutriment_taurine
nutriment_ph : pH (no unit)
Units
nutriment_energy_unit
nutriment_proteins_unit
nutriment_casein_unit
nutriment_serum-proteins_unit
nutriment_nucleotides_unit
nutriment_carbohydrates_unit
nutriment_sugars_unit
nutriment_sucrose_unit
nutriment_glucose_unit
nutriment_fructose_unit
nutriment_lactose_unit
nutriment_maltose_unit
nutriment_maltodextrins_unit
nutriment_starch_unit
nutriment_polyols_unit
nutriment_fat_unit
nutriment_saturated-fat_unit
nutriment_butyric-acid_unit
nutriment_caproic-acid_unit
nutriment_caprylic-acid_unit
nutriment_capric-acid_unit
nutriment_lauric-acid_unit
nutriment_myristic-acid_unit
nutriment_palmitic-acid_unit
nutriment_stearic-acid_unit
nutriment_arachidic-acid_unit
nutriment_behenic-acid_unit
nutriment_lignoceric-acid_unit
nutriment_cerotic-acid_unit
nutriment_montanic-acid_unit
nutriment_melissic-acid_unit
nutriment_monounsaturated-fat_unit
nutriment_polyunsaturated-fat_unit
nutriment_omega-3-fat_unit
nutriment_alpha-linolenic-acid_unit
nutriment_eicosapentaenoic-acid_unit
nutriment_docosahexaenoic-acid_unit
nutriment_omega-6-fat_unit
nutriment_linoleic-acid_unit
nutriment_arachidonic-acid_unit
nutriment_gamma-linolenic-acid_unit
nutriment_dihomo-gamma-linolenic-acid_unit
nutriment_omega-9-fat_unit
nutriment_oleic-acid_unit
nutriment_elaidic-acid_unit
nutriment_gondoic-acid_unit
nutriment_mead-acid_unit
nutriment_erucic-acid_unit
nutriment_nervonic-acid_unit
nutriment_trans-fat_unit
nutriment_cholesterol_unit
nutriment_fiber_unit
nutriment_sodium_unit
nutriment_alcohol_unit : % vol of alcohol
nutriment_vitamin-a_unit
nutriment_vitamin-d_unit
nutriment_vitamin-e_unit
nutriment_vitamin-k_unit
nutriment_vitamin-c_unit
nutriment_vitamin-b1_unit
nutriment_vitamin-b2_unit
nutriment_vitamin-pp_unit
nutriment_vitamin-b6_unit
nutriment_vitamin-b9_unit
nutriment_vitamin-b12_unit
nutriment_biotin_unit
nutriment_pantothenic-acid_unit
nutriment_silica_unit
nutriment_bicarbonate_unit
nutriment_potassium_unit
nutriment_chloride_unit
nutriment_calcium_unit
nutriment_phosphorus_unit
nutriment_iron_unit
nutriment_magnesium_unit
nutriment_zinc_unit
nutriment_copper_unit
nutriment_manganese_unit
nutriment_fluoride_unit
nutriment_selenium_unit
nutriment_chromium_unit
nutriment_molybdenum_unit
nutriment_iodine_unit
nutriment_caffeine_unit
nutriment_taurine_unit
nutriment_ph_unit : pH (no unit)
Adding the alcohol % of wine

12% wine 

nutriment_unit=%25%20vol&nutriment_alcohol=12
Adding the carbon footprint
nutriment_carbon-footprint
nutriment_carbon-footprint_unit

Adding a comment to your edit

comment=Automated%20Edit
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