I have an e-commerce website with many different products with different prices, and I want to allow people to buy them using PayPal. This guide details how to create a PayPal Buy Now button, but you have to manually fill out a form. This would be very very time consuming to do every time I add a product.
I looked at the HTML of the Buy Now button, hoping to be able to inject my product information with ERB, but nowhere in the HTML is the product information like price listed. Instead, there's a very long "value" element, and I assume the product information is encrypted within this.
Anyone know how to dynamically generate a PayPal button with Rails? If not, does anyone know of am alternative I could use?
You can inject the data as below:
ERB sample (in case you are sending one product):
<li>
<b>product name:</b> <%= #product.name %>
<br>
<b>product price:</b> <%= #product.price %>
<b style='text-decoration: underline;'>Pay:</b>
<form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post" >
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="business" value="yourbusinessmail#hotmail.com*">
<input type="hidden" name="lc" value="US">
<input type="hidden" name="item_name" value="<%= #product.name %>">
<input type="hidden" name="item_number" value="<%= #product.id %>">
<input type="hidden" name="amount" value="<%= #product.price %>">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="button_subtype" value="products">
<input type="hidden" name="no_note" value="0">
<input type="hidden" name="shipping" value="<%= #product.shipping %>">
<input type="hidden" name="add" value="1">
<input type="hidden" name="bn" value="PP-ShopCartBF:btn_cart_LG.gif:NonHostedGuest">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_cart_LG.gif" border="0" name="submit" >
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>
</li>
Use below Paypal website link to customize your button then you can inject values as in Ruby code:
Design Paypal button
Related
I have the following HTML which works well for subscription payments in my test environment.
<form action="paypalWebAddress" method="post" target="_top">
<input type="hidden" name="cmd" value="_xclick-subscriptions"/>
<input type="hidden" name="business" value="myPaypalAccountId"/>
<input type="hidden" name="paymentaction" value="sale"/>
<input type="hidden" name="item_name" value="Subscription For abc123"/>
<input type="hidden" name="currency_code" value="GBP"/>
<input type="hidden" name="no_note" value="1" />
<input type="hidden" name="a3" value="50"/>
<input type="hidden" name="p3" value="6"/>
<input type="hidden" name="t3" value="M"/>
<input type="hidden" name="src" value="1" />
<input type="hidden" name="srt" value="0" /><!--needs to be never ending-->
<input type="hidden" name="return" value="www."/>
<input type="hidden" name="notify_url" value="www."/>
<input type="hidden" name="cancel_url" value="www."/>
<input type="hidden" name="custom" value="abc123"/>
<input TYPE="hidden" name="charset" value="utf-8">
<input type="hidden" name="bn" value="Me_Subscribe_WPS_UK" />
<input type="submit" name="submit" value="Make Payment"/>
</form>
I'm about to go live and concerned that some one could easily manipulate the DOM and I'm suddenly sending bogus payments. I feel it would be safer to somehow post these values from the code behind so the user can't tamper with the values but, the user will still need to use the PayPal interface in their browser to log in and subscribe.
PayPal-NET-SDK has a quick start and shows how to get going. I have completed this (copied and pasted and ran in debug mode) and it executes fine. However, this doesn't cover subscriptions, probably for the reason explained above (and would probably prevent them accessing the PayPal gui in their browser).
I get the option in the PayPal dashboard area to create a button and reference by button, but, this won't work for me as I need to be able to set the custom field per subscription as a user can subscribe to 1 or more services and each service is unique to that user.
I can't understand how to achieve this
If I understand this right, every subscription is unique per customer in your case and that won't work with the static buttons, so the API seems the only way to go.
The PayPal API does cover subscriptions, they're called Billing Plans. Because each subscription is different, you could create a new Billing Plan for each unique service (or combination of services). This can be done without any intermediate SDK using the HttpClient directly to their API.
Alternatively, the PayPal-NET-SDK you mentioned also seems to cover Billing plans. Their Sample application has quite a lot of examples on how to create, enumerate and issue Billing Plans. Make sure you check out the billing_agreement_tokens collection on the Payment class. You might add multiple "service" tokens there.
No matter how close you are to releasing, a lot of testing still seems to be in order here.
You can try using HttpClient, something like this will help
HttpContent content = new FormUrlEncodedContent(
new List<KeyValuePair<string, string>> {
new KeyValuePair<string, string>("key1",
"value1"),
new KeyValuePair<string,string>("key2","value2")
});
content.Headers.ContentType = new
MediaTypeHeaderValue("application/x-www-form-
urlencoded");
content.Headers.ContentType.CharSet = "UTF-8";
HttpResponseMessage resposne = await
client.PostAsync(new Uri("paypalWebAddress"),
content);
You should not hardcode the values in forms, instead you should create an API in the backend which will return the correspoding values.Then you can dynamically create the form based on the response of the API.
Make sure you create this form after you have received the response from the API.You can have a check like if response is null show some spinner.
<form action="paypalWebAddress" method="post" target="_top">
<input type="hidden" name="cmd" value="{response.cmd}"/>
<input type="hidden" name="business" value={response.business}"/>
<input type="hidden" name="paymentaction" value={response.action}/>
<input type="hidden" name="item_name" value="{response.item}"/>
<input type="submit" name="submit" value="Make Payment"/>
</form>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="business.test.com">
<input type="hidden" name="item_name" value="Memory Stick">
<input type="hidden" name="item_number" value="MEM32507725">
<input type="hidden" name="amount" value="3">
<input type="hidden" name="tax" value="1">
<input type="hidden" name="quantity" value="1">
<input type="hidden" name="currency_code" value="USD">
<!-- Enable override of buyers's address stored with PayPal . -->
<input type="hidden" name="address_override" value="1">
<!-- Set variables that override the address stored with PayPal. -->
<input type="hidden" name="first_name" value="John">
<input type="hidden" name="last_name" value="Doe">
<input type="hidden" name="address1" value="345 Lark Ave">
<input type="hidden" name="city" value="San Jose">
<input type="hidden" name="state" value="CA">
<input type="hidden" name="zip" value="95121">
<input type="hidden" name="country" value="US">
<input type="image" name="submit"
src="https://www.paypalobjects.com/en_US/i/btn/btn_buynow_LG.gif"
alt="PayPal - The safer, easier way to pay online">
</form>
On Click on buy now :
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<!-- Identify your business so that you can collect the payments. -->
<input type="hidden" name="business" value="herschelgomez#xyzzyu.com">
<!-- Specify a Buy Now button. -->
<input type="hidden" name="cmd" value="_xclick">
<!-- Specify details about the item that buyers will purchase. -->
<input type="hidden" name="item_name" value="Premium Umbrella">
<input type="hidden" name="amount" value="50.00">
<input type="hidden" name="currency_code" value="USD">
<!-- Prompt buyers to enter the quantities they want. -->
<input type="hidden" name="undefined_quantity" value="1">
<!-- Display the payment button. -->
<input type="image" name="submit" border="0"
src="https://www.paypalobjects.com/en_US/i/btn/btn_buynow_LG.gif"
alt="Buy Now">
<img alt="" border="0" width="1" height="1"
src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" >
</form>
I created the next form:
<form name="_xclick" action="https://www.sandbox.paypal.com/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="team#team.com">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="item_name" value="Subscription">
<input type="hidden" name="return" value="http://www.my_website.com/<%= params[:locale] %>/success">
<input type="hidden" name="amount" value="1">
<input type="image" src="http://www.paypal.com/en_US/i/btn/btn_paynow_LG.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
</form>
But it redirects to my website via GET request. How can I redirect to my website via POST request after payment?
When I create my button in PayPal button factory:
<form action="https://www.sandbox.paypal.com/webscr" method="post" target="_top">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="SOME_VALUE">
<input type="image" src="https://www.paypalobjects.com/en_US/IL/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>
When I click on the PayPal button, I have set up success and cancel redirects when I click on the PayPal button, but the following error is displayed:
PayPal cannot process this transaction because of a problem with the seller's website. Please contact the seller directly to resolve this problem.
So, how can I change my first code that it will perform a POST redirect after billing?
Can you please check "https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/Appx_websitestandard_htmlvariables/"
and "rm" variable for solutions. And also set the hidden fields values for the paypal payment submissions.
I have created paypal button with this code
<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post">
<!-- Order id. -->
<input type="hidden" name="invoice" value="'+paypalData.orderId+'" />
<!-- Specify a PayPal Shopping Cart Add to Cart button. -->
<input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="upload" value="1">
<!-- Identify your business so that you can collect the payments. -->
<input type="hidden" name="business" value="'+paypalData.businessId+'">
<!-- Specify currency. -->
<input type="hidden" name="currency_code" value="'+paypalData.currency+'">
<!-- The URL to which PayPal posts information about the payment, in the form of Instant Payment -->
<input type="hidden" name="notify_url" value="notify">
<!-- Return URL when cancel payment -->
<input type="hidden" name="cancel_return" value="cancel">
<!-- Return URL when payment is done -->
<input type="hidden" name="return" value="return">
<input type="hidden" name="amount_'+index+'" value="'+val["price_per_unit"]+'">
<input type="hidden" name="quantity_'+index+'" value="'+val["count"]+'">
<input type="hidden" name="item_name_'+index+'" value="'+val["name"]+'">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="'+paypalData.submitAlt+'">
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>
But I need to modify it for jQuery mobile. I know that I have to use this command:
cmd=_express-checkout-mobile in url https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout-mobile
but I dont know how to use it and where to put it.
Whole aplication is converted by phonegap.
Thank you very much for your time and any advice.
Your current integration is using PayPal Standard. Express Checkout is part of the API products. You would need to rebuild your checkout using the API to take advantage of Express Checkout.
I'm building a site on rails and backbone. On the front end I have a simple form:
<form action="/api/users" method="post">
<input type="file" name="profile_image" />
<input type="submit" value="submit" />
<input type="hidden" name="id" value="1">
<input type="hidden" name="method" value="put">
<input type="hidden" name="authenticity_token" value="<%= csrf_token %>">
</form>
When I post this form and print params[:profile_image] from my UsersController the line
logger.debug params[:profile_image].class
just returns
String.
Where's the file?
For what it's worth, I'm using carrierwave, but don't want to mount an uploader. I would just like to pass a file to myUploader.store!.
You need to set enctype on your form in order to submit files. See http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.2
Example
<form action="/api/users" enctype="multipart/form-data" method="post">
I have a fairly simple ASP.Net site that uses google checkout (I have an imagebutton with the PostBackUrl set to the Google address passing values of hidden fields) which works fine.
I've been moving this app to MVC and I'm not sure how to handle this. I thought about using jQuery form but I don't believe this would work in this situation because there are times when they're redirected to the google pages. Has anyone used google checkout in an asp.net MVC app?
You can do the same thing as you were doing before, just you end up doing it manually.
Sounds like you're using just the basic version, yes?
You create an HTML form that has the Action set to the Google checkout process, add in the proper Hidden fields (the model your controller passes down would be populated w/ the correct values for those) and then you have a submit button (or image if you prefer).
So, an example off Google's Basic HTML page, modified for some MVC-ish-ness would be something like this:
<form method="POST"
action="https://checkout.google.com/api/checkout/v2/checkoutForm/Merchant/<%= Model.MerchantId %>"
accept-charset="utf-8">
<input type="hidden" name="item_name_1" value="<%= Model.Item.Name %>"/>
<input type="hidden" name="item_description_1" value="<%= Model.Item.Description %>>
<input type="hidden" name="item_quantity_1" value="<%= Model.Item.Quantity %>"/>
<input type="hidden" name="item_price_1" value="<%= Model.Item.Price %>"/>
<input type="hidden" name="item_currency_1" value="<%= Model.Item.Currency %>"/>
<input type="hidden" name="ship_method_name_1" value="<%= Model.Shipping.Price %>"/>
<input type="hidden" name="ship_method_price_1" value="<%= Model.Shipping.Price %>"/>
<input type="hidden" name="ship_method_currency_1" value="<%= Model.Shipping.Currency %>"/>
<input type="hidden" name="tax_rate" value="<%= Model.Tax.Rate %>"/>
<input type="hidden" name="tax_us_state" value="<%= Model.Tax.State %>"/>
<input type="hidden" name="_charset_"/>
<input type="image" name="Google Checkout" alt="Fast checkout through Google"
src="http://checkout.google.com/buttons/checkout.gif?merchant_id=<%= Model.MerchantId %>&w=180&h=46&style=white&variant=text&loc=en_US"
height="46" width="180"/>
</form>
Obviously, you could make all that even more MVC-ish by using the form helper Html.Hidden and so on, but that shows the really basic version of what you need to do.