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A genuinely new purchase needs a new key.",[491,583,587],{"className":584,"code":585,"language":586,"meta":496,"style":496},"language-html shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","\u003Cform method=\"post\" action=\"{% url 'vatly_django:checkout' offer='book' %}\">\n  {% csrf_token %}\n  \u003Cinput type=\"hidden\" name=\"idempotency_key\" value=\"{{ purchase_key }}\">\n  \u003Cbutton type=\"submit\">Buy the book\u003C\u002Fbutton>\n\u003C\u002Fform>\n","html",[476,588,589,626,631,677,708],{"__ignoreMap":496},[500,590,591,594,598,601,604,606,609,611,614,616,618,621,623],{"class":502,"line":503},[500,592,593],{"class":543},"\u003C",[500,595,597],{"class":596},"swJcz","form",[500,599,600],{"class":535}," method",[500,602,603],{"class":543},"=",[500,605,556],{"class":543},[500,607,608],{"class":559},"post",[500,610,556],{"class":543},[500,612,613],{"class":535}," action",[500,615,603],{"class":543},[500,617,556],{"class":543},[500,619,620],{"class":559},"{% url 'vatly_django:checkout' offer='book' %}",[500,622,556],{"class":543},[500,624,625],{"class":543},">\n",[500,627,628],{"class":502,"line":520},[500,629,630],{"class":510},"  {% csrf_token %}\n",[500,632,633,636,639,642,644,646,649,651,654,656,658,661,663,666,668,670,673,675],{"class":502,"line":527},[500,634,635],{"class":543},"  \u003C",[500,637,638],{"class":596},"input",[500,640,641],{"class":535}," type",[500,643,603],{"class":543},[500,645,556],{"class":543},[500,647,648],{"class":559},"hidden",[500,650,556],{"class":543},[500,652,653],{"class":535}," name",[500,655,603],{"class":543},[500,657,556],{"class":543},[500,659,660],{"class":559},"idempotency_key",[500,662,556],{"class":543},[500,664,665],{"class":535}," value",[500,667,603],{"class":543},[500,669,556],{"class":543},[500,671,672],{"class":559},"{{ purchase_key }}",[500,674,556],{"class":543},[500,676,625],{"class":543},[500,678,679,681,684,686,688,690,693,695,698,701,704,706],{"class":502,"line":532},[500,680,635],{"class":543},[500,682,683],{"class":596},"button",[500,685,641],{"class":535},[500,687,603],{"class":543},[500,689,556],{"class":543},[500,691,692],{"class":559},"submit",[500,694,556],{"class":543},[500,696,697],{"class":543},">",[500,699,700],{"class":510},"Buy the book",[500,702,703],{"class":543},"\u003C\u002F",[500,705,683],{"class":596},[500,707,625],{"class":543},[500,709,710,712,714],{"class":502,"line":547},[500,711,703],{"class":543},[500,713,597],{"class":596},[500,715,625],{"class":543},[486,717,719],{"id":718},"call-from-your-own-post-view","Call from your own POST view",[472,721,722],{},"Pass a saved, authorized billable and the key you persisted:",[491,724,726],{"className":493,"code":725,"language":495,"meta":496,"style":496},"from vatly_django.billing import Billing\n\n\ndef example(billable, purchase_key):\n    return Billing().checkout(billable, \"book\", idempotency_key=purchase_key)\n",[476,727,728,746,750,754,775],{"__ignoreMap":496},[500,729,730,732,735,738,741,743],{"class":502,"line":503},[500,731,507],{"class":506},[500,733,734],{"class":510}," vatly_django",[500,736,737],{"class":543},".",[500,739,740],{"class":510},"billing ",[500,742,514],{"class":506},[500,744,745],{"class":510}," Billing\n",[500,747,748],{"class":502,"line":520},[500,749,524],{"emptyLinePlaceholder":523},[500,751,752],{"class":502,"line":527},[500,753,524],{"emptyLinePlaceholder":523},[500,755,756,758,760,762,766,769,772],{"class":502,"line":532},[500,757,536],{"class":535},[500,759,540],{"class":539},[500,761,572],{"class":543},[500,763,765],{"class":764},"sHdIc","billable",[500,767,768],{"class":543},",",[500,770,771],{"class":764}," purchase_key",[500,773,774],{"class":543},"):\n",[500,776,777,779,782,785,788,790,792,794,797,799,801,803,806,808,810],{"class":502,"line":547},[500,778,550],{"class":506},[500,780,781],{"class":539}," Billing",[500,783,784],{"class":543},"().",[500,786,787],{"class":539},"checkout",[500,789,572],{"class":543},[500,791,765],{"class":539},[500,793,768],{"class":543},[500,795,796],{"class":543}," \"",[500,798,478],{"class":559},[500,800,556],{"class":543},[500,802,768],{"class":543},[500,804,805],{"class":764}," idempotency_key",[500,807,603],{"class":543},[500,809,560],{"class":539},[500,811,812],{"class":543},")\n",[472,814,815],{},"Redirect to the returned hosted URL. A durable CheckoutAttempt records the entity,\npayload fingerprint and key before network I\u002FO. Reusing the key for a different\nentity or changed offer fails. Idempotency retention is finite; investigate stale\nattempts rather than blindly retrying forever.",[817,818,819,832],"table",{},[820,821,822],"thead",{},[823,824,825,829],"tr",{},[826,827,828],"th",{},"Built-in view result",[826,830,831],{},"Meaning",[833,834,835,844,852,860,868],"tbody",{},[823,836,837,841],{},[838,839,840],"td",{},"302",[838,842,843],{},"Redirect to hosted checkout, or login for an unauthenticated request",[823,845,846,849],{},[838,847,848],{},"400",[838,850,851],{},"Invalid key or offer",[823,853,854,857],{},[838,855,856],{},"403",[838,858,859],{},"CSRF rejection",[823,861,862,865],{},[838,863,864],{},"405",[838,866,867],{},"Non-POST request",[823,869,870,873],{},[838,871,872],{},"502",[838,874,875],{},"SDK failure; retry\u002Freconcile using the same purchase key",[472,877,878,879,882,883,886],{},"A return-page visit is not proof of payment. ",[481,880,881],{"href":438},"Signed webhooks"," update\nlocal records; ",[481,884,885],{"href":432},"reconciliation"," handles missing snapshots. 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