Enable cart links through Rules

Sorry, I'm not a programmer. Just a user. But have a question.
Why is it so necessary for such a contrib module like Commerce to rely on other contrib modules?
I tried to download it. It requires at least 3 other modules to be downloaded. It ended up not to work at all. Entry API in its current development produces errors right after installation. And Commerce relies on it... How can we help with the development if we just are not able to run it?

Thank you for your reply.
Advantages of integration are obvious. On the other hand, Ubercart, for instance, tends to reduce its dependancies from other modules. Right now it can be run just with core modules. D7 core is pretty powerful itself.

Besides, some other things are not so clear. After installation, there is no such content type as "Product". It is actually present but in a strange place - in Store configuration. I don't mind creating it there, but who will see it? Admin only? How to make a page (a product page) with just "add to cart" button?
Shopping cart is actualy a pretty simple idea:
1). To create product pages.
2). To let people add them to cart by button.
3). To have all that been e-mailed and stored in a database.
All the other things are secondary. And can be extended by core modules as well (by field module or others).

Entity gives errors - get_info errors. But ok, alpha is alpha.

I do appologize if I'm wrong. Let's wait some more, until D7 is getting beta at least.

As a developer you know better what your module should be. If it works fine it's ok. Although I've never needed neither Views nor CCK to run a site.

Absolutely no objections regarding product creation in admin area. That's a correct place, I believe. It doesn't matter what link will lead you to that process and where this link will be located. But sorry, how to display a list of products for a site visitor?

Ok, I have tried once again.
Used latest D7dev + latest Views, Rules and Entity.
1. Clean install. Stark theme. Enabled Entity CRUD API and Entity Metadata. No errors. After Rules activation - errors. See attached image1.
2. Ok, refreshed. Got everything of Drupal Commerce without major faults (just the same entity_get_info errors). See attached image2.
3. Created a test product. See attached image3.
4. After clicking on product title in products list got these beautiful lines. See attached image4.
So, how to display a normal product list with clickable "Add to cart" buttons?

In general, Drupal Commerce seems to be more logical than Ubercart, and that's why I worry so much.

What you really is a new node type with a product reference field.

I'd better wait for a tutorial.

An interesting idea.. :) Pretty similar to flags, but more generic I guess. However probably this would need protection from CSRF attacks too.

Accessing path arguments with Rules would be easily possible by adding such properties to the 'system' variable via entity metadata. However I don't feel like this is a very clean solution. Perhaps just do a small module that allows assigning rule sets (or generically rule components) to paths, such that you could turn rules variables into arguments. We could even support leaving some of the parameters unconfigured, such that the remaining parameters can be configured via a form!

Is there any intermediary solution to this at the moment? It doesn't look like this can be achieved with Rules as it is now, there's no "Add product to cart" action.

I'm happy to work on this, but I'd like to know how you want to tackle it.

I need this module -- should I just run Coder on it and try to port it that way?

I can start playing with this, however at the moment there's no "add item to users cart" action in Rules. Is that something you want to add first?

I'd suggest making use of Rules components (-> rules_get_components()) for that, i.e. allow assigning action components to an URL. One could support mapping additional URL parts to arguments, e.g. base_path/arg1/arg2/... . -> use entity_property_verify_data_type() to ensure the data type of the argument really fits and bail out if not. For entities, just passing the id should work.

For execution, best retrieve the component manually from cache. (see rules_invoke_component()). Then check whether the data types match the parameters of the component (-> $component->parameterInfo()) and if just execute it via $component->executeByArgs($args).
You could also easily support showing an input form for any missing parameters. Rules recently got an "execute component" functionality, what shows you how you can easily do that. But probably that would be more useful for binding components as operation into a tab of a node or another entity, so you could use node/x/operation to get the component form for execution on the node.

Subscribing... interesting idea to do this through Rules.

--Ben

Any progress on the interaction with Rules?

Any suggestion where to look further?

Thanks,

~Uzi

sub

sub

FYI, see http://drupal.org/project/rules_link

I am some what making progress on this, see attached images.

The rules_link allows us to attach a rule to a bundle, but I suspect this is only for generating the link - as we have no product pages this isn't really necessary. I suspect this module will need some changes too.

Here we go ... was pretty simple in the end, the hard work was modifying the rules_link module.

Here's the patch for rules_link: http://drupal.org/node/1283734

Note: You can set your destination like so: /purchase/1?destination=checkout or /purchase/2?destination=cart

The action to empty the card is already there, I'll add those extra options now. Am I using commerce_cart_product_add($order->uid, $line_item) correctly? It seems a little dodgy to provide it with the $order->uid instead of the actual $order?

How's this looking?

This patch is great. It's exactly what I was looking for.

I am getting one notice error:

Notice: Trying to get property of non-object in commerce_cart_rules_add() (line 175 of [my site path]/sites/all/modules/contrib/commerce/modules/cart/commerce_cart.rules.inc).

The notice doesn't appear to cause any other problems. The checkout workflow continues as expected.

My rule is:

{ "rules_user_creates_researcher_account" : {
"LABEL" : "User creates researcher account",
"PLUGIN" : "reaction rule",
"WEIGHT" : "1",
"REQUIRES" : [ "rules", "commerce_cart" ],
"ON" : [ "user_insert" ],
"IF" : [
{ "data_is" : { "data" : [ "account:field-registration-type" ], "value" : "1" } }
],
"DO" : [
{ "commerce_cart_add" : {
"user" : [ "site:current-cart-order:owner" ],
"commerce_product" : "1",
"quantity" : "1",
"combine" : 1
}
},
{ "redirect" : { "url" : "checkout" } }
]
}
}

@eric.smith I'm not sure how to fix that,

  commerce_cart_product_add($user->uid, $line_item, $combine);

During registration apparently $user is not an object, which perplexes me ... can you add in a dvm($user) on line 174? Any ideas Ryan?

Also Ryan could you weigh in on #1283734: Make link-types pluggable

I just attempted to install the patch and I have an error.

I am using the following:

Drupal 7.8
commerce 7.x-1.x-dev
rules 7.x-2.0-rc2
rules-links 7.x.1.x-dev (downloaded today)
patch from http://drupal.org/node/1283734
commerce cart patch noted in 32 above.

I was able to patch the rules-link ok.
Here is the error i received when patching commerce module.

user@ubuntu11.4:~/sites/all/modules/commerce$ git apply -v commerce_cart_rules_addtocart.patch
Checking patch modules/cart/commerce_cart.rules.inc...
error: while searching for:
}

/**
* @}
*/

error: patch failed: modules/cart/commerce_cart.rules.inc:139
error: modules/cart/commerce_cart.rules.inc: patch does not apply

I know this is bleeding edge stuff. But I thought you would want to know.

I installed the patch in note 32 with:
Drupal 7.8
commerce 7.x-1.0
rules 7.x-2.0-rc2

I needed an action for rules to add products to cart and it works! Thank you!

The rules_link author thinks that cart links are an edge case and won't support them in his module, so I suppose I'm stuck creating a rules_betterlinks module.

Actually next action is for Ryan (review patch).

I've written a module which is more flexible than Rules Link and not tied to entities, it's also somewhat more intuitive to use as accessing a link simply becomes an event: http://drupal.org/project/rules_linkevent

Any suggestion on how we can solve the anonymous user use case Ryan?

Sub

Nice one, thanks Ryan!

Any idea when or if this patch will be included in Drupal commerce and rules links modules?

@aidanlis

I've installed your module and got it working but I cannot figure out to pass the sku through the cart link. I can manually set the sku in rszrama add a product by sku - but I'd like to pass the sku by url instead of have a rule for every product!

Sorry for asking but I've looked everywhere I can think of and turned up nothing. Rules doesn't seem to be able to grab a value from the url that I can see.

Thank you for any help.