[WIP] Tagging with ember data support

[koemeet]

This fixes issue #7

I am currently working on supporting tags in this component, while also supporting ember data. You can pass in an ember data record array (DS.RecordArray) instance, and it will create new tags based on the type of the recordarray, almost magic.

This PR is still a WIP and is still made with only ember data in mind, any feedback is welcome!

@iStefo Could you review this, note this is still a WIP, but would like to know your ideas on this.

Currently, the following settings work as you would expect:

Option	Type	Info
tags	bool	This is required to enable tagging
content	Array	This can also be an ember data record array
value	Array	This can also be an ember data record array, new records are appended automatically. When a new tag is deleted, the record is unloaded from the store.
optionLabelPath	string	This will be mapped to the field name of the ember data model too, this would be something like title or name.
optionIdPath	string	Set this the same as the label to have unique tags

Example usage (you could leave out content here if you don't want to preload some tags):

{{select-2
    tags=true
    content=model.tags
    value=model.post.tags
    placeholder="Begin typing tags for this post"
    optionLabelPath="name"
    optionIdPath="name"
}}

TODO

• [x] Test this functionality for both ember data objects and for simple objects
• [x] Fix bug where the query filters new tags with the same name as an existing tag correctly
• [ ] Complete examples/documentation
• [ ] Add actions createTag and removeTag that can override default behaviour

[iStefo]

Thanks for the work you put into this! I like how you aim for a high code quality and test coverage, it is great. I added some comments to the code, but I'm already very happy with the direction this is going. This will be the 1.4.0 feature!

[koemeet]

@iStefo Good to hear :+1: I am sure many people will like this feature. I think this will be the only library that has ember data support build in for creating tags. Without the need of implementing factory actions for every select box. I will work on your comments and refactor my code some more.

Also, I think it is nicer to name the option tags to create. So you configure it like this:

{{select-2
    create=true
    placeholder="Begin typing tags for this post"
    content=model.tags
    value=model.post.tags
}}

A small change, but I think it fits better.

[iStefo]

Actually, I'm not sure about naming this option create, because the behaviour is what most people would understand as tagging (and also select2 iteself calls it tagging). What do you think about createTags=true? It's a little verbose but also states the suggested use case for the option.

[koemeet]

@iStefo Ah, np, will leave it as tags (the same as select2). Too abstract is sometimes bad I guess.

[koemeet]

@iStefo I made some good progress and expanded the examples page. It currently uses the matcher to prevent creating new tags that already exists. Because I use the matcher is also handles diacritics. Also added support for plain ember arrays & objects. What do you think of the examples so far, is it enough?

Also, how should we handle optionIdPath? It is kinda ugly now to declare both of them in order to make it work as expected. We can force it to be the same as the optionLabelPath for tags. Since the label is also the ID for tags in the terminology of select2, right?

[iStefo]

I checked out your branch and fixed the example code indentation (general indentation for the examples.hbs is still a mess, though). How can I incorporate my changes to the PR? PR your forked repo? Sounds unnecessarily complicated though, should I send you my .patch?

[shunchu]

Wow. This is awesome Thank you!

[abobwhite]

Hey guys - what's the latest on this? I took a look at the diff and tried to apply some of the Ember Data changes to my local copy but can't figure out where is the correct spot with ember addon. As for this PR, why are we limiting Ember Data support to only when "tags" are being used? Shouldn't I just be able to use a multiple=true with selection=model.myHasManyProperty ? I wasn't aware until now that ember-select-2 did not already support Ember Data officially - which surprised me. I have been very stuck because of ember-select-2 causing Ember to throw an error trying to set a read-only hasMany relationship vs addObject and removeObject....

Let me know if I can help or provide more info as this is a blocker for me right now.

[fullofcaffeine]

+1 I also need this functionality and was glad I found out someone already worked on it, but it's been a while already, is it ready to be merged? Any ways I could help?

[fullofcaffeine]

Hmm, I see select2 (and select2-ember) already supports multiple=true for a similar functionality. What's the difference here?

[joaoribeirost]

Are these changes usable when we install the addon? I'm trying to get it to work but it seems i still can't add new tags. My code is like this:

{{select-2
    content=tag_list
    optionValuePath="name"
    optionLabelPath="name"
    optionIdPath="name"
    value=selectedTags
    multiple=true
    createTags=true
    placeholder="Choose some Tags"
 }}

Is there something i'm doing wrong?

[valtlfelipe]

Any update on this? I'm using Ember v1.13.3 with Ember Data v1.13.5 and it is not working. I'm getting this warning in console:

WARNING: select2#initSelection was not able to map each "id" to an object from "content". The remaining keys are: 1,abc. The input will be disabled until a) the desired objects is added to the "content" array or b) the "value" is changed.

It appears that the new value is not getting added to the content property, just to the value, which is causing this error.