categories

问题 I have a database with a bunch of categories, some are children: Array ( [0] => Array ( [id] => 1 [name] => Home Improvement [slug] => Home-Improvement [parent] => [user_id] => 1 [order] => 1 ) [1] => Array ( [id] => 2 [name] => Asbestos Abatement & Removal [slug] => Asbestos-Abatement-Removal [parent] => 1 [user_id] => 1 [order] => 8 ) [2] => Array ( [id] => 3 [name] => Asphalt & Asphalt Products [slug] => Asphalt-Asphalt-Products [parent] => 1 [user_id] => 1 [order] => 9 ) [3] => Array (

问题 I'd like to stop any customer advancing to the checkout if they do not have a particular product category in their basket. I would also like to tell them with an error message that they need to add a certain product. I've found some code but cannot it to work. I've added it as a code snippet into my Wordpress install but alas it does not function and there are no error messages even though I have debugging switched on. Here is the code that I have found in Github that may need modification in

问题 I am trying to efficiently create a binary dummy variables (1/0) in my data set based on whether or not one or more of 7 variables (col9-15) in the data set take on a specific value (35), but I don't want to test all columns. While as.numeric is ideal usually, I can only get it to work with one column at a time: data$indicator <- as.numeric(data$col1 == 35) Any idea how I can modify the above code so that if any of data$col9 - data$col15 are "35" then my indicator variable takes on a 1?

问题 I want to show one product of sub-categories selected, but there was an error message: Trying to get property of non-object in view product detail, please to be corrected if there are mistakes in the controller, model, and view. where is my mistake? View <?php foreach ($categories as $key=>$value) { ?> <div class="col-sm-3"> <h5><?php echo $categories[$key]->categoriesName; ?></h5> <?php if(count($categories[$key]->subs)>0) { ?> <?php foreach ($categories[$key]->subs as $k=>$v) { ?> <ul> <li>

问题 I have a list of person ids, and the types of medicines they got on specific dates. I would like to create a variable count whereby I can give the indicator 1 to the first drug that occurs, 2 to the second unique drug and 3 to the third unique drug. When the first drug occurs after the second and third, I want it to still have the indicator 1. Likewise for unique drug 2, it should maintain the value 2 throughout the person's whole medication history, and the same for drug 3. +----------------

问题 I would like to detect custom screen category in android being used in the particular activity,I would like to detect layout-sw640dp programatically,how can be this achieved.We can do the same for small,normal,large & xlarge layouts but I am not sure on this one,kindly help me on this.Thanks. 回答1: Not sure why you need to do that. But, a quick walk-around is to use tag, for example: In mdpi: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res

问题 I would like to detect custom screen category in android being used in the particular activity,I would like to detect layout-sw640dp programatically,how can be this achieved.We can do the same for small,normal,large & xlarge layouts but I am not sure on this one,kindly help me on this.Thanks. 回答1: Not sure why you need to do that. But, a quick walk-around is to use tag, for example: In mdpi: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res

问题 This question already has answers here : How to sum a variable by group (13 answers) Closed 3 years ago . I have searched a lot, but not found a solution. I have the following data frame: Age no.observations Factor 1 1 4 A 2 1 3 A 3 1 12 A 4 1 5 B 5 1 9 B 6 1 3 B 7 2 12 A 8 2 3 A 9 2 6 A 10 2 7 B 11 2 9 B 12 2 1 B I would like to sum create another column with the sum by the categories Age and Factor, thus having 19 for the first three rows, 26 for the next three etc. I want this to be a

问题 I'm trying to edit my author.php wordpress template so that it shows posts by any one author, but only from one particular category. So far, I've been trying the query_posts function which fetches the category okay, but not the author. Depending on which way I do it, so far the posts either don't display at all or all posts in that category appear regardless of the author. This is the appropriate code which I've seen quoted by a wordpress.org admin, but it doesn't work for me and I can't find

问题 So here is what i'm trying to do. I have created a custom taxonomy called "country" and within that custom taxonomy I have categories of different countries like, USA, France, Germany, England and so on. I created a ACF(Advance custom field) Field Group that lets me add a image to each country, I have this called "flag". So when I make a post and I check the country under the custom taxonomy I need to pull that image (flag) associated with that category and display it on my page. I have seen