It is possible to create references to any entity type, including custom entities. Entity referenceĮntity reference is a powerful module which is not restricted to any predefined entities like the References module. References is a simple module which emulates the node and user reference fields from Drupal 6. There are two modules commonly used to enable entity references in Drupal 7: References These field types allow the definition of relationships between two things (e.g. It’s now possible to create new entity types and many Drupal 7 modules take advantage of this to provide enhanced functionality and performance – for example, the Commerce module with its line item entity type and profile2 module’s profile types.Įntity references replace the role of the user and node reference fields from CCK. In Drupal 7, nodes, comments and users are all examples of entities, configured from the same base entity system. With entities, there is no longer anything special about nodes. Content types have to be types of node by definition, and come with comments, revisions etc that may not be relevant in many use cases and cause an overhead. D6 used a system of nodes, expanded by the CCK module to provide configurable content types. To understand this concept, it’s necessary to look back to how things were in Drupal 6. * The function is named themename_formid.Drupal 7 is built around entities and entity bundles. Here is the theme registry function we need:Īnd here is the override function very much like the D5 version except the form ID. [Note that if you find the form element, e.g. In Drupal 6 the form ID is "user_profile_form". The value for our form ID in this case is "user_edit". In this example it looks something like this (in D5): You want to use the value of that form_id input field. One has token stuff in it and another will have the name="form_id". On your site view the source of the page (Firebug is very handy for this) and look for some hidden fields near the top of the form. You can easily find the form ID in the HTML source code. Find the form IDĪll forms in Drupal have a unique ID. Our example is altering the form as seen at My Account > Edit in a very simple way to change the name of the Username field from "Username" to say "Login ID" instead.
Drupal rules reset value to null code#
The code is actually quite similar and both rely on two important things: 1) the form's ID and 2) some knowledge of Drupal's Form API. We will not be looking at functional changes here so I'm going to take an example that works well in either method and you can choose the one you prefer. This is not often a real problem so removing elements in the theme layer is still acceptable but you should be aware of the distinction. Removing an element in a module can completely remove access to it in any way. Form elements can be completely removed from the HTML in the theme layer but from an access point of view, someone could still theoretically make use of the field in the form's $_POST because the field is not removed from the form process, only the HTML output is removed.adding new validation rules or submission actions) can only happen in a module. Changing functionality of a form (e.g.There are two situations however where you will want to use a module rather than a theme: Changes to the HTML can be accomplished with either method so most people will use the method they are more comfortable with already themers use the theme and developers use a module. So there are two methods for altering form output in Drupal, one at the theme layer and the other through a custom module. Deciding to make the change in the theme or a module That is just so it looks nice and clear for the article. Also note that in the examples below I have them wrapped in php tags but you should not include those if you copy/paste.
You should be comfortable creating a new function, looking at arrays and a having at least a passing understanding of the Forms API is real handy. This article will briefly discuss what's going on and then mainly focus on showing working examples for both methods in Drupal 5 and 6. You'll be a form-modifying, input-customizing wiz in no time.
Modifying forms is a topic that is often met with groans but once you understand the two methods to accomplish the task and the basic, underlying concepts, it really isn't that hard to do at all. Drupal has a lot of forms to fill out and not all of them may be just the way you want or need them to be.
0 kommentar(er)
